Medha MEP 660. Troubleshooting Manual (2008)

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

S21FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire S21FB from the

contactor to the cable (ID: AU) connector pin-L. If

necessary replace the cable.

3) If still Green LED 10 is not glowing, the digital input card

MDIP16 in slot No. 10 defective. Replace the card and

check.

11. If the Green LED 10 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

198

PARAMETER

DESCRIPTION

FAULT CODE

1197

FAULT MESSAGE

S31 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the S31 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 8 against channel no. and then press Enter key to test S31

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the S31 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and S31CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire S31CL from the coil terminal to

the connector of cable ID: AY (pin - J). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 11 and Yellow LED 11 on the digital input card MDIP16

in slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to S31 power contactor interlock. Identify faulty

199

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

S31FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock / aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire S31FB from the

contactor to the cable (ID: AU) connector pin-M. If

necessary replace the cable.

3) If still Green LED 11 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 11 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

200

PARAMETER

DESCRIPTION

FAULT CODE

1198

FAULT MESSAGE

P1 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

Dynamic braking

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P1 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 0 against channel no. and then press Enter key to test P1

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P1 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P1CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P1CL from the coil terminal to

the connector of cable ID: AY (pin - A). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 3 and Yellow LED 3 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P1 power contactor interlock. Identify faulty wiring

201

and rectify.

B. If the voltage is more than 65V, check the voltage between

P1FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P1FB from the contactor

to the cable (ID: AU) connector pin-D. If necessary

replace the cable.

3) If still Green LED 3 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 3 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

202

PARAMETER

DESCRIPTION

FAULT CODE

1199

FAULT MESSAGE

P21 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

Dynamic braking

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P21 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 1 against channel no. and then press Enter key to test P21

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P21 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P21CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P21CL from the coil terminal to

the connector of cable ID: AY (pin - B). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 4 and Yellow LED 4 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P21 power contactor interlock. Identify faulty

203

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

P21FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P21FB from the contactor

to the cable (ID: AU) connector pin-E. If necessary

replace the cable.

3) If still Green LED 4 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 4 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

204

PARAMETER

DESCRIPTION

FAULT CODE

1200

FAULT MESSAGE

P31 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

Dynamic braking

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P31 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 2 against channel no. and then press Enter key to test P31

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P31 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P31CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P31CL from the coil terminal to

the connector of cable ID: AY (pin - C). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 5 and Yellow LED 5 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P31 power contactor interlock. Identify faulty

205

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

P31FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P31FB from the contactor

to the cable (ID: AU) connector pin-F. If necessary

replace the cable.

3) If still Green LED 5 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 5 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

206

PARAMETER

DESCRIPTION

FAULT CODE

1201

FAULT MESSAGE

P2 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P2 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 3 against channel no. and then press Enter key to test P2

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P2 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P2CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P2CL from the coil terminal to

the connector of cable ID: AY (pin - D). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 6 and Yellow LED 6 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P2 power contactor interlock. Identify faulty wiring

207

and rectify.

B. If the voltage is more than 65V, check the voltage between

P2FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P2FB from the contactor

to the cable (ID: AU) connector pin-G. If necessary

replace the cable.

3) If still Green LED 6 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 6 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

208

PARAMETER

DESCRIPTION

FAULT CODE

1202

FAULT MESSAGE

P22 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P22 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 4 against channel no. and then press Enter key to test P22

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P22 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P22CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P22CL from the coil terminal to

the connector of cable ID: AY (pin - E). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 7 and Yellow LED 7 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P22 power contactor interlock. Identify faulty

209

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

P22FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P22FB from the contactor

to the cable (ID: AU) connector pin-H. If necessary

replace the cable.

3) If still Green LED 7 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 7 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

210

PARAMETER

DESCRIPTION

FAULT CODE

1203

FAULT MESSAGE

P32 Auxiliary Contact Stuck Open. Run Auto/Manual Test

RESTRICTIONS

Dynamic braking

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the P32 power contactor Aux. Contact closes.

RECOVERY

PROBABLE

Defective Power contactor

CAUSES

Defective wiring.

Defective digital output card MLSD16 in slot No. 14.

Defective digital input card MDIP16 in slot No. 10

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Ensure control air pressure is 5 Kg./Sq.Cm.

Enter 5 against channel no. and then press Enter key to test P32

power contactor. Press 1 to energise the contactor and 0 to de-

energise the contactor.

Press 1 to energise the P32 power contactor.

If the contactor is not picking up. Check the voltage across the

operating coil of the magnet valve.

If the voltage is zero, check the voltage between Wire 13 at the coil

terminal and locomotive 4 wire.

A. If the voltage is zero, check the continuity of 13 wire connected

to the coil terminal.

B. If the voltage is more than 65V, check the voltage between

locomotive 13 wire and P32CL wire at the coil terminal.

C. If the voltage is zero, negative path is not getting completed

through MEP.

a) Check the slackness of the connector at MEP-660 control unit

for the cable ID: AY. If found slack tighten the connector.

b) Check the continuity of wire P32CL from the coil terminal to

the connector of cable ID: AY (pin - F). If necessary replace

the cable.

c) If still voltage is zero, the digital output card MLSD16 in slot

No. 14 might be defective. Replace the card and check once

again.

If the Voltage is more than 65V and still power contactor is not

picking up, then the power contactor or magnet valve or pneumatic

circuit is defective. Identify and replace the component/contactor.

Press 0 to de-energise the power contactor.

While you are toggling the power contactor, check the status of the

Green LED 8 and Yellow LED 8 on the digital input card MDIP16 in

slot 10.

With power contactor energized, Both the LEDs should glow.

10. If the Green LED is not glowing, check the voltage between wire 51

at the power contactor aux. Interlock and locomotive 4 wire.

A. If the voltage is zero, check the continuity of the wire Loop 51

connected to P32 power contactor interlock. Identify faulty

211

wiring and rectify.

B. If the voltage is more than 65V, check the voltage between

P32FB and locomotive 4 wire.

a) If the voltage is zero, the interlock is bad. Replace the

interlock/aux. Contact.

b) If the voltage is more than 65V,

1) Check the slackness of the connector at the MEP660

control unit for the cable ID: AU. If the connector is slack

tighten the connector.

2) Check the continuity of the wire P32FB from the contactor

to the cable (ID: AU) connector pin-J. If necessary

replace the cable.

3) If still Green LED 8 is not glowing, the digital input card

MDIP16 in slot No. 11 defective. Replace the card and

check.

11. If the Green LED 8 is glowing and corresponding yellow LED is not

glowing also, the MDIP16 card is defective.

212

PARAMETER

DESCRIPTION

FAULT CODE

1204

FAULT MESSAGE

EXPR Stuck Closed. Run Auto/Manual Test

RESTRICTIONS

Cranking prohibited

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the EXPR interlock found open.

RECOVERY

PROBABLE

1. Defective EXPR relay

CAUSES

2. Defective wiring.

3. Defective digital output card MLSD16 in slot No. 14.

FAULT

1. Shut down the engine. Switch ON MB1, MB2, MPCB, MFPB1, and

ISOLATION

MFPB2 circuit breakers. Check the status of the EXPR relay.

2. If EXP Relay is in energized position, check the voltage across the

EXPR coil terminals.

A. If the voltage is zero but relay is in picked up position, the relay

is defective. Replace the relay.

B. If the voltage is more than 65V, MLSD16 in slot No. 14 is

defective. Replace the card and check up.

3. If EXP Relay is in de-energised position, check the status of the

Green LED 2 on the digital input card in slot 9.

A. If the green LED 2 is glowing, disconnect the wire EXPRFB from

the EXPR relay interlock. Check the status of the Green LED.

a) If the Green LED 2 is still glowing, the wire EXPRFB is

shorted with some positive wire in the bunch. Identify and

remove the short circuit.

b) If the Green LED 2 is OFF, then the EXPR interlock is bad.

Replace the EXPR relay.

4. Run self test for the EXP relay to ensure proper feed back signal

under ‘Auto test for relays’ in the ‘Test Mode’ menu available in

main menu.

213

PARAMETER

DESCRIPTION

FAULT CODE

1205

FAULT MESSAGE

AGPR Stuck Closed. Run Auto/Manual Test

RESTRICTIONS

Cranking prohibited

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the AGPR interlock found open.

RECOVERY

PROBABLE

1. Defective AGPR relay

CAUSES

2. Defective wiring.

3. Defective digital output card MLSD16 in slot No. 15.

FAULT

1. Shut down the engine. Switch ON MB1, MB2, MPCB, MFPB1, and

ISOLATION

MFPB2 circuit breakers. Check the status of the AGPR relay.

2. If AGPR Relay is in energized position, check the voltage across the

AGPR coil terminals.

A. If the voltage is zero but relay is picked up, the relay is

defective. Replace the relay.

B. If the voltage is more than 65V, MLSD16 in slot No. 14 is

defective. Replace the card and check up.

3. With AGP Relay is in de-energised position, check the status of the

Green LED 3 on the digital input card in slot 9.

A. If the green LED 3 is glowing, disconnect the wire AGPRFB from

the AGP Relay interlock. Check the status of the Green LED.

a) If the Green LED 3 is still glowing, the wire AGPRFB is

shorted with some positive wire in the bunch. Identify and

remove the short circuit.

b) If the Green LED 3 is OFF, then the AGPR interlock is bad.

Replace the AGP Relay.

4. Run self-test for the AGP Relay to ensure proper feed back signal

under ‘Auto test for relays’ in the ‘Test Mode’ menu available in

main menu.

214

PARAMETER

DESCRIPTION

FAULT CODE

1206

FAULT MESSAGE

GF Stuck Closed. Run Auto/Manual Test

RESTRICTIONS

None

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the GF auxiliary contact found open.

RECOVERY

PROBABLE

Defective GF contactor or aux. Contacts.

CAUSES

Defective wiring.

Defective digital output cards MLSD16 in slot No. 14 & 15.

FAULT

Shut down the engine. Switch ON MB1, MB2, MPCB, MFPB1, and

ISOLATION

MFPB2 circuit breakers. Check the status of the GF contactor.

If GF contactor is in energized position, check the voltage across

the GF contactor operating coil terminals.

A. If the voltage is zero, the contactor is defective. Replace the

contactor.

B. If the voltage is more than 65V, MLSD16 in slot No. 14 and in

slot 15 is defective. Replace the cards 1 by 1 and check up.

If GF Contactor is in de-energised position, check the status of the

Green LED 0 on the digital input card MDIP16 in slot 11 and Green

LED 1 on the digital input card MDIP16 in slot 12.

A. If any of the above green LEDs is glowing, disconnect the wire

GFFB1 & 2 wires from the GF contactor Aux. Contact. Check the

status of the Green LEDs.

a) If the Green LED is still glowing, the wire GFFB1/GFFB2

is/are shorted with some positive wire in the bunch. Identify

and remove the short circuit.

b) If the Green LED is OFF, then the GF aux. Contact is welded.

Replace the GF contactor.

Run self test for the GF contactor to ensure proper feed back signal

under ‘Auto test for relays’ in the ‘Test Mode’ menu available in

main menu.

215

PARAMETER

DESCRIPTION

FAULT CODE

1207

FAULT MESSAGE

Low Battery Voltage Engine may not Crank

RESTRICTIONS

None

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when engine cranking is successful.

RECOVERY

PROBABLE

Most probably this fault is logged soon after cranking if the cranking is

CAUSES

not successful.

1. Weak batteries due to:

A. Repeated cranking or

B. Loco worked on batteries for longer period and then shut down.

2. There may be short circuit in the engine cranking circuit of Aux.

Machines.

3. Defective Aux. Machines.

FAULT

1. Measure the battery voltage with a voltmeter. Compare the

ISOLATION

measured value with the battery voltage displayed on the display

unit.

2. If both the voltages are same, change the batteries set with fully

charged set.

3. If the voltage is good and specific gravity is normal, check up the

cranking circuit for any short circuit of positive and negative cables.

Check and isolate if any short circuit is found.

4. One of the Aux. Machines may be defective internally. Check and

replace the defective machine.

216

PARAMETER

DESCRIPTION

FAULT CODE

1208

FAULT MESSAGE

GF Auxiliary Contact 1 Circuit OPEN FAULT

RESTRICTIONS

None

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when GF auxiliary contact 1 is detected as closed.

RECOVERY

PROBABLE

Defective Aux. Contact.

CAUSES

Defective wiring.

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Enter 13 against channel no. and then press Enter key to test GF

contactor. Press 1 to energise the contactor and 0 to de-energise

the contactor.

Press 1 to energise the GF contactor. The contactor should pick up.

Check the status of the Green LED 0 on the digital input card

MDIP16 in slot No. 11.

If the Green LED is not glowing, check the voltage between wire

No. 51 at the GF contactor Aux. Contact 1 and locomotive 4wire.

A. If the voltage is zero, check the continuity of 51-wire loop

connected to the GF contactor Aux. Contact 1.

B. If the voltage is more than 65V, check the voltage between

GFFB1 and locomotive 4 wire.

a) If the voltage is zero, GF contactor aux. Contact 1 is bad.

Replace the aux. Contact or GF contactor.

b) If the voltage is more than 65V:

1) Check the slackness of the connector at MEP-660 control

unit for the cable ID: AV. If found slack tighten the

connector.

2) Check the continuity of the wire GFFB1 from the Aux.

Contact to cable (ID: AV) connector Pin - A. If necessary

replace the cable.

3) If the Green LED is not glowing still, the digital input card

MDIP16 in slot No. 11 is defective.

If the Green LED is glowing but corresponding Yellow LED is not

glowing and the fault is getting logged the digital input card

MDIP16 in slot 11 is defective.

217

PARAMETER

DESCRIPTION

FAULT CODE

1209

FAULT MESSAGE

GF Auxiliary Contact 2 Circuit OPEN FAULT

RESTRICTIONS

None

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when GF auxiliary contact 2 is detected as closed.

RECOVERY

PROBABLE

Defective Aux. Contact.

CAUSES

Defective wiring.

FAULT

Set the display mode to ‘Manual Test for outputs’ under ‘Test Mode’

ISOLATION

available in main menu. The display exhibits certain conditions to

be full filled. After that press Enter key to start testing of outputs.

Enter 13 against channel no. And then press Enter key to test GF

contactor. Press 1 to energise the contactor and 0 to de-energise

the contactor.

Press 1 to energise the GF contactor. The contactor should pick up.

Check the status of the Green LED 1 on the digital input card

MDIP16 in slot No. 12.

If the Green LED is not glowing, check the voltage between wire

No. 51 at the GF contactor Aux. Contact 2 and locomotive 4wire.

A. If the voltage is zero, check the continuity of 51-wire loop

connected to the GF contactor Aux. Contact 2.

B. If the voltage is more than 65V, check the voltage between

GFFB2 and locomotive 4 wire.

a) If the voltage is zero, GF contactor aux. Contact 2 is bad.

Replace the aux. Contact or GF contactor.

b) If the voltage is more than 65V:

1) Check the slackness of the connector at MEP-660 control

unit for the cable ID: AW. If found slack tighten the

connector.

2) Check the continuity of the wire GFFB1 from the Aux.

Contact to cable (ID: AW) connector Pin - B. If necessary

replace the cable.

3) If the Green LED1 is not glowing still, the digital input

card MDIP16 in slot No. 12 is defective.

If the Green LED is glowing but corresponding Yellow LED is not

glowing and the fault is getting logged the digital input card

MDIP16 in slot 12 is defective.

218

PARAMETER

DESCRIPTION

FAULT CODE

1210

FAULT MESSAGE

Engine Shut Down due to OST Tripping

Check OST before restarting Engine.

RESTRICTIONS

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when engine cranked.

RECOVERY

PROBABLE

1. Engine might have over speeded due to any reason and then shut

CAUSES

down.

FAULT

Most probably this fault is logged due to engine over speeding.

ISOLATION

1. Reset the fault and crank the engine.

2. If the engine is over speeding during cranking:

A. There might be problem with engine or Governor. Identify and

clear the fault from engine or governor.

3. If the engine is cranking normal:

A. Check the engine RPM notch wise. If any erratic RPM is noticed

B. Check the solenoids operation as per the notch.

4. Check the slack ness of governor amphonal plug.

PARAMETER

DESCRIPTION

FAULT CODE

1211

FAULT MESSAGE

Communication With Electronic Governor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the communication between MEP-660 and electronic

RECOVERY

governor is established.

PROBABLE

This fault will be logged with locos fitted with both MEP-660 and MEG

CAUSES

601.

1. Defective communication cable between MEP-660 and MEG 601.

FAULT

1. Defective communication cable, replace the cable and check the

ISOLATION

communication.

2. Provided ‘MEG com. Enabled’ flag should be in ON condition.

219

PARAMETER

DESCRIPTION

FAULT CODE

1212

FAULT MESSAGE

AUX EEPROM Faulty. Default CFG record loaded

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

High, Manual

FAULT

RECOVERY

PROBABLE

This fault will be logged while switching on the supply. Loco will work

CAUSES

with default parameters.

FAULT

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1213

FAULT MESSAGE

RTC Fault Occurred @ Power ON

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

High, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Manual only

RECOVERY

PROBABLE

System Clock is detected as faulty at Power ON self check.

CAUSES

FAULT

ISOLATION

220

PARAMETER

DESCRIPTION

FAULT CODE

1214

FAULT MESSAGE

Aux. Analogue DB Power Supply FAULTY

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Aux. analogue DB power supply is detected as

RECOVERY

normal.

PROBABLE

Most probably this fault accompany with associated sensors

CAUSES

(Connected to the ADB1) faulty.

1. Defective Analog distribution box.

2. Defective wiring.

FAULT

1. Replace the ADB and check up

ISOLATION

2. Replace the cable ID: AK and check up.

3. Check for disconnected wires at back side TB for the wire No. PSH1.

4. Check the continuity of wire PSH1 from TB to the Cable connector

(Cable ID: AK Pin - C). If necessary replace the cable.

5. Check the status of the Green LED 6 on the digital input card

MDIP16 in slot No. 12.

6. If the green LED glowing and corresponding Yellow LED 4 is not

glowing the digital input card MDIP16 is defective. Replace and

check up.

221

PARAMETER

DESCRIPTION

FAULT CODE

1215

FAULT MESSAGE

Main Reservoir Pressure Sensor Faulty. Air Compressor pumps

continuously

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic after the Main Reservoir Pressure Sensor has been found to

RECOVERY

function normally.

PROBABLE

1. MRPR pressure sensor faulty.

CAUSES

2. Defective cables

3. Defective ADB1

7. Defective MAIP8_AU card in slot 1.

FAULT

1. Set the display to show Auxiliary Generator parameters by selecting

ISOLATION

‘Display’ mode from the main menu and then selecting ‘Auxiliary’

sub-menu.

2. Compare the MR pressure value with the displayed MRPR value.

3. If the difference is excess, replace the sensor and check up.

4. If still the fault is still logging

A. Slackness of the connectors either at the sensor or at the ADB1.

Tighten the connectors both at the sensor and ADB of the cable

ID: BF.

B. Defective interconnecting cable ID: BF between sensor and ADB.

Replace the cable and check up.

C. Slackness of the connectors either at ADB1 or MEP-660 control

unit. Tighten the cable connectors both at ADB1 and MEP-660

control unit for the cable ID: AJ.

D. Defective interconnecting cable ID: AJ between ADB and MEP-

660 control unit.

E. Defective ADB1. Replace the ADB1 and check.

F. Defective MAIP8_AU card in slot 1. Replace the card check up.

Note: This message is displayed only when “MR Pressure Sensor connected” flag is

enabled in Configuration of the system

222

PARAMETER

DESCRIPTION

FAULT CODE

1216

FAULT MESSAGE

AUX. EEPROM Write Error at Power Off. Last AUX Fault Cleared.

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

High, Manual

FAULT

RECOVERY

PROBABLE

System is switched off while writing the fault message on the EEPROM.

CAUSES

FAULT

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1217

FAULT MESSAGE

Life Time Loco Data Counters Faulty and they are Reset

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

Medium Manual

FAULT

Manual only (By using Laptop / PC)

RECOVERY

PROBABLE

CAUSES

FAULT

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1218

FAULT MESSAGE

Life Time Loco Data counters Start. Date/Time Faulty and Counters Will

be Reset at next Time Setting

RESTRICTIONS

Warning only

ALARM BELL

RESET LEVEL

Medium Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when time is set.

RECOVERY

PROBABLE

CAUSES

FAULT

Through configuration software, date and time has to be update by

ISOLATION

using Laptop / PC.

223

PARAMETER

DESCRIPTION

FAULT CODE

1220

FAULT MESSAGE

Battery Voltage Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Battery Voltage sensor is detected normal

RECOVERY

working.

PROBABLE

Battery voltage sensor BATV faulty.

CAUSES

Defective cables

Defective ADB2

Defective MAIP8_WS card in slot 6.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB2 with cable ID: BE.

B. Measure voltages between pins A, B and C of the ADB2

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB2 is defective. Replace

the ADB2.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: BE is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB2 and MEP-660 control unit

with cable ID: G may be slack. Check and tighten the

connectors.

C. The cable with ID: G may be defective. Replace the cable and

check up.

D. MAIP8_WS card might be defective. Replace the card and check

up.

225

PARAMETER

DESCRIPTION

FAULT CODE

1221

FAULT MESSAGE

Aux. Gen. Voltage Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Aux. Gen. Voltage sensor is detected normal

RECOVERY

working.

PROBABLE

Battery voltage sensor AGAV faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AE.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AE is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

226

PARAMETER

DESCRIPTION

FAULT CODE

1222

FAULT MESSAGE

Battery Charging Current Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the BATI battery charging current sensor is detected

RECOVERY

normal working.

PROBABLE

Battery Charging current sensor BATI faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AF.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AF is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

227

PARAMETER

DESCRIPTION

FAULT CODE

1223

FAULT MESSAGE

Aux. Gen. Output Current Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Aux. Gen. Armature current sensor AGAI is

RECOVERY

detected normal working.

PROBABLE

Aux. Gen. Armature Current sensor AGAI faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AD.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AD is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

228

PARAMETER

DESCRIPTION

FAULT CODE

1224

FAULT MESSAGE

Aux. Gen. Field Current Sensor Faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Aux. Gen. Field current sensor AGFI is detected

RECOVERY

normal working.

PROBABLE

Aux. Gen. Field Current sensor AGFI faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AC.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AC is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

229

PARAMETER

DESCRIPTION

FAULT CODE

1225

FAULT MESSAGE

Engine Water Temperature Sensor Faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine Water Temperature sensor EWT is detected

RECOVERY

normal working.

PROBABLE

Engine Water Temperature sensor EWT faulty.

CAUSES

Defective cables

Defective ADB3

Defective MAIP8_EP card in slot 7.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB3 with cable ID: Z.

B. Measure voltages between pins A, B and C of the ADB3

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB3 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: Z is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AA may be slack. Check and tighten the

connectors.

C. The cable with ID: AA may be defective. Replace the cable and

check up.

D. MAIP8_EP card might be defective. Replace the card and check

up.

230

PARAMETER

DESCRIPTION

FAULT CODE

1226

FAULT MESSAGE

Lube Oil Temperature Sensor Faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Lube Oil Temperature sensor EOT is detected

RECOVERY

normal working.

PROBABLE

Lube Oil Temperature sensor EOT faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AH.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AH is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

231

PARAMETER

DESCRIPTION

FAULT CODE

1227

FAULT MESSAGE

Air Temperature Sensor Faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Ambient Air Temperature sensor AAT is detected

RECOVERY

normal working.

PROBABLE

Ambient Air Temperature sensor AAT faulty.

CAUSES

Defective cables

Defective ADB1

Defective MAIP8_AU card in slot 1.

FAULT

Remove the cable connector at the sensor.

ISOLATION

Measure voltage between pin B & A of the cable connector. The

voltage should be 24V with pin A positive. (+24V)

Measure voltage between pin B & C of the cable connector. The

voltage should be 24V with pin B positive. (-24V)

If any of the above voltages (+24V) or (-24V) is zero / less:

A. Remove sensor cable connector on ADB1 with cable ID: AI.

B. Measure voltages between pins A, B and C of the ADB1

connector.

a) If voltage between B & A is less than +24V or voltage

between B & C is less than -24V, ADB1 is defective. Replace

the ADB1.

b) If the voltages between pins B&A is +24V and voltage

between pins B & C is -24V, the interconnecting cable

between ADB and sensor with cable ID: AI is defective.

If +24V and -24V supply is available at the sensor cable connector,

A. Sensor may be defective. Replace and check.

B. The 19 pin connectors between ADB1 and MEP-660 control unit

with cable ID: AJ may be slack. Check and tighten the

connectors.

C. The cable with ID: AJ may be defective. Replace the cable and

check up.

D. MAIP8_AU card might be defective. Replace the card and check

up.

232

PARAMETER

DESCRIPTION

FAULT CODE

1228

FAULT MESSAGE

WRONG Engine RPM at Notch 1.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 1.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 1 RPM (400

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

233

PARAMETER

DESCRIPTION

FAULT CODE

1229

FAULT MESSAGE

WRONG Engine RPM at Notch 2.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 2.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 2 RPM (450

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

234

PARAMETER

DESCRIPTION

FAULT CODE

1230

FAULT MESSAGE

WRONG Engine RPM at Notch 3.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 3.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 3 RPM (550

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

235

PARAMETER

DESCRIPTION

FAULT CODE

1231

FAULT MESSAGE

WRONG Engine RPM at Notch 4.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 4.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 4 RPM (650

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

236

PARAMETER

DESCRIPTION

FAULT CODE

1232

FAULT MESSAGE

WRONG Engine RPM at Notch 5.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 5.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 5 RPM (750

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

237

PARAMETER

DESCRIPTION

FAULT CODE

1233

FAULT MESSAGE

WRONG Engine RPM at Notch 6.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 6.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 6 RPM (850

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

238

PARAMETER

DESCRIPTION

FAULT CODE

1234

FAULT MESSAGE

WRONG Engine RPM at Notch 7.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 7.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 7 RPM (950

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

239

PARAMETER

DESCRIPTION

FAULT CODE

1235

FAULT MESSAGE

WRONG Engine RPM at Notch 8.

Solenoids AV, BV, CV, DV or Their Wiring faulty

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Engine RPM is found to be with in set limits.

RECOVERY

PROBABLE

1. Erratic engine RPM.

CAUSES

2. Governor amphonal plug is slack.

3. Defective wiring

FAULT

1. Check the engine RPM with a standard RPM meter in notch 8.

ISOLATION

2. If RPM is more or less by 35 RPM, than the set Notch 8 RPM (1050

default), adjust the RPM in the Governor so that the RPM is with in

the set limit.

3. If the measured RPM is not as per notch and erratic,

A. Check the slackness of Governor amphonal plug. If slack tighten

the plug.

B. Check the wiring of the governor amphonal plug at the backside

TB.

C. Check the continuity of the wires 15A, 12A, 7C and 3A from TB

to the Governor amphonal plug pins. If necessary replace the

amphonal plug wiring.

D. Check for correct sequence of solenoids (AV, BV, CV and DV)

operation in the governor as per the notch. If necessary change

the governor.

240

PARAMETER

DESCRIPTION

FAULT CODE

1236

FAULT MESSAGE

Traction Motor 1 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.1 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1237

FAULT MESSAGE

Traction Motor 2 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.2 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1238

FAULT MESSAGE

Traction Motor 3 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.3 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

241

PARAMETER

DESCRIPTION

FAULT CODE

1239

FAULT MESSAGE

Traction Motor 4 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.4 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1240

FAULT MESSAGE

Traction Motor 5 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.5 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

1241

FAULT MESSAGE

Traction Motor 6 High Current to be Confirmed

RESTRICTIONS

Warning only.

ALARM BELL

RESET LEVEL

Low, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Tr. Motor No.6 current is reduced to normal or the

RECOVERY

current sensor is identified as faulty.

PROBABLE

CAUSES

FAULT

Reset the fault manually.

ISOLATION

242

PARAMETER

DESCRIPTION

FAULT CODE

1242

FAULT MESSAGE

Speed sensor 1 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 1

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 1 speed

sensor to RDB.

3. Check for slackness Tr.Motor 1 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID: J from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

243

PARAMETER

DESCRIPTION

FAULT CODE

1243

FAULT MESSAGE

Speed sensor 2 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 2

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 2 speed

sensor to RDB.

3. Check for slackness Tr.Motor 2 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID: K from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

244

PARAMETER

DESCRIPTION

FAULT CODE

1244

FAULT MESSAGE

Speed sensor 3 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 3

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 3 speed

sensor to RDB.

3. Check for slackness Tr.Motor 3 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID: L from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

245

PARAMETER

DESCRIPTION

FAULT CODE

1245

FAULT MESSAGE

Speed sensor 4 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 4

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 4 speed

sensor to RDB.

3. Check for slackness Tr.Motor 4 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID: M from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

246

PARAMETER

DESCRIPTION

FAULT CODE

1246

FAULT MESSAGE

Speed sensor 5 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 5

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 5 speed

sensor to RDB.

3. Check for slackness Tr.Motor 5 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID: N from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

247

PARAMETER

DESCRIPTION

FAULT CODE

1247

FAULT MESSAGE

Speed sensor 6 faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

1. Defective speed sensor cable.

CAUSES

2. Defective speed sensor.

3. Un coupled gear in the Tr. Motor No. 6

4. Defective RPM Distribution Box.

5. Defective MFIP16 card.

FAULT

1. Reset the fault manually.

ISOLATION

2. Check for any cable cut/disconnection from the Tr.Motor 6 speed

sensor to RDB.

3. Check for slackness Tr.Motor 6 speed sensor cable connector

available on bottom of the chassis. If slack tighten the connector.

4. Check the continuity of the individual wires of the cable ID:O from

under chassis to RDB. If any open circuit is found replace the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Check for any slackness of fixing bolts of the Tr. Motor Speed

sensor. If slack tighten.

B. Replace the Tr. Motor speed sensor and check up.

C. Check up the Gear fitted on to the Tr. Motor armature shaft by

removing the commutator end grease cup. If slack or worked

out attend.

D. Replace the MFIP16 card and check up.

248

PARAMETER

DESCRIPTION

FAULT CODE

1248

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 1

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

249

PARAMETER

DESCRIPTION

FAULT CODE

1249

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 2

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

250

PARAMETER

DESCRIPTION

FAULT CODE

1250

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 3

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

251

PARAMETER

DESCRIPTION

FAULT CODE

1251

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 4

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

252

PARAMETER

DESCRIPTION

FAULT CODE

1252

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 5

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

253

PARAMETER

DESCRIPTION

FAULT CODE

1253

FAULT MESSAGE

One Detectors of Speed Sensor Faulty on Wheel 6

RESTRICTIONS

ALARM BELL

RESET LEVEL

Medium, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

RECOVERY

PROBABLE

This fault will be logged in Ver 0 locomotives where T-813M type

CAUSES

sensors are used.

FAULT

This fault will be logged only when the locomotive is fitted with an axle

ISOLATION

mounted pulse generators having two-speed sensor.

1. Reset the fault manually.

2. Check for any cable cut/disconnection from the pulse generator to

RDB.

3. Check for slackness of wires in the junction box. If slack tighten the

connections.

4. Check the continuity of the individual wires of the cables connected

between Junction box and RDB. If any open circuit is found replace

the cable.

5. Check the continuity of 19-core cable from RDB to MEP-660 control

unit.

6. If cables are found normal and still the fault is logging frequently,

A. Replace the pulse generator and check up.

B. Replace the MFIP16 card and check up.

254

PARAMETER

DESCRIPTION

FAULT CODE

1254

FAULT MESSAGE

Altitude Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Altitude sensor found working normal.

RECOVERY

PROBABLE

1. Altitude sensor APR faulty.

CAUSES

2. Defective cables

3. Defective ADB2

5. Defective MAIP8_AU card in slot 1.

FAULT

1. Set the display to show ixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the altitude displayed in the display unit with Actual altitude

of the site.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging frequently:

A. Check Slackness of the connectors either at the sensor or at the

ADB1. Tighten the connectors both at the sensor and ADB of the

cable ID: BG.

B. Defective interconnecting cable ID: BG between sensor and

ADB. Replace the cable and check up.

C. Slackness of the connectors either at ADB2 or MEP-660 control

unit. Tighten the cable connectors both at ADB2 and MEP-660

control unit for the cable ID: AI.

D. Defective interconnecting cable ID: AI between ADB and MEP-

660 control unit.

E. Defective ADB2. Replace the ADB2 and check.

F. Defective MAIP8_WS card in slot 1. Replace the card check up.

255

PARAMETER

DESCRIPTION

FAULT CODE

1255

FAULT MESSAGE

Memory Card of Event Recorder Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

Automatic when system detected as new memory card loaded for

event recording.

FAULT

LOW, Manual

RECOVERY

If the fault condition is still present when cleared manually, the fault

will be generated again.

PROBABLE

1. Memory card faulty.

CAUSES

FAULT

Replace the memory card with new memory card for Event recording

ISOLATION

purpouse.

PARAMETER

DESCRIPTION

FAULT CODE

1260

FAULT MESSAGE

Brake Pipe Pr. Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Brake Pipe Pressure sensor found working normal.

RECOVERY

PROBABLE

1. Defective / blocked pressure pipelines.

CAUSES

2. Defective Brake Pipe Presure sensor (BPP).

3. Defective cables

4. Defective ADB4

5. Defective MIAI card in slot 2.

FAULT

1. Set the display to show mixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the brake pipe pressure displayed in the display unit with

the gauge on control stand.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging:

A. Check Slackness of the connectors either at the sensor or at the

ADB4. Tighten the connectors both at the sensor and ADB of the

cable ID: BI.

B. Defective interconnecting cable ID: BI between sensor and ADB.

Replace the cable and check up.

C. Slackness of the connectors either at ADB4 or MEP-660 control

unit. Tighten the cable connectors both at ADB4 and MEP-660

control unit for the cable ID: BJ.

D. Defective interconnecting cable ID: BJ between ADB and MEP-

660 control unit.

E. Defective ADB4. Replace the ADB4 and check.

F. Defective MIAI card in slot 2. Replace the card check up.

256

PARAMETER

DESCRIPTION

FAULT CODE

1261

FAULT MESSAGE

Brake Cylinder Pr. Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Brake Cylinder Pressure sensor found working

RECOVERY

normal.

PROBABLE

1. Defective / blocked pressure pipe lines

CAUSES

2. Brake Cylinder Pressure sensor (BCP) faulty.

3. Defective cables

4. Defective ADB4

5. Defective MIAI card in slot 2.

FAULT

1. Set the display to show mixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the brake cylinder pressure displayed in the display unit with

the calibrated Pneumatic gauge.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging:

A. Check Slackness of the connectors either at the sensor or at the

ADB4. Tighten the connectors both at the sensor and ADB of the

cable ID: BH.

B. Defective interconnecting cable ID: BH between sensor and

ADB. Replace the cable and check up.

C. Slackness of the connectors either at ADB4 or MEP-660 control

unit. Tighten the cable connectors both at ADB4 and MEP-660

control unit for the cable ID: BJ.

D. Defective interconnecting cable ID: BJ between ADB and MEP-

660 control unit.

E. Defective ADB4. Replace the ADB4 and check.

F. Defective MIAI card in slot 2. Replace the card check up.

257

PARAMETER

DESCRIPTION

FAULT CODE

1262

FAULT MESSAGE

Lube Oil Pr. Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Lube Oil Pressure sensor found working normal.

RECOVERY

PROBABLE

1. Defectve / blocked pressure pipelines.

CAUSES

2. Defectve Lube Oil Presure sensors (LOP).

3. Defective cables.

4. Defective ADB4.

5. Defective MIAI card in slot 2.

FAULT

1. Set the display to show mixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the lube oil pressure displayed in the display unit with a

calibrated gauge.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging:

A. Check Slackness of the connectors either at the sensor or at the

ADB4. Tighten the connectors both at the sensor and ADB of the

cable ID: BM.

B. Defective interconnecting cable ID: BM between sensor and

ADB. Replace the cable and check up.

C. Slackness of the connectors either at ADB4 or MEP-660 control

unit. Tighten the cable connectors both at ADB4 and MEP-660

control unit for the cable ID: BJ.

D. Defective interconnecting cable ID: BJ between ADB and MEP-

660 control unit.

E. Defective ADB4. Replace the ADB4 and check.

F. Defective MIAI card in slot 2. Replace the card check up.

258

PARAMETER

DESCRIPTION

FAULT CODE

1263

FAULT MESSAGE

Booster Air Pr. Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Booster Air Pressure sensor found working normal.

RECOVERY

PROBABLE

1. Booster Air Presure sensors (BAP) faulty.

CAUSES

2. Defective cables.

3. Defective ADB4.

4. Defective MIAI card in slot 2.

FAULT

1. Set the display to show mixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the booster air pressure displayed in the display unit with

Pneumatic gauge.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging frequently:

A. Check Slackness of the connectors either at the sensor or at the

ADB4. Tighten the connectors both at the sensor and ADB of the

cable ID: BN.

B. Defective interconnecting cable ID: BN between sensor and

ADB. Replace the cable and check up.

C. Slackness of the connectors either at ADB4 or MEP-660 control

unit. Tighten the cable connectors both at ADB4 and MEP-660

control unit for the cable ID: BJ.

D. Defective interconnecting cable ID: BJ between ADB and MEP-

660 control unit.

E. Defective ADB4. Replace the ADB4 and check.

F. Defective MIAI card in slot 2. Replace the card check up.

259

PARAMETER

DESCRIPTION

FAULT CODE

1264

FAULT MESSAGE

Fuel Oil Pr. Sensor Faulty

RESTRICTIONS

ALARM BELL

RESET LEVEL

MEDIUM, Manual

If the fault condition is still present when cleared manually, the fault

will be generated again.

FAULT

Automatic when the Fuel Oil Pressure sensor found working normal.

RECOVERY

PROBABLE

1. Fuel Oil Presure sensor (FOP) faulty.

CAUSES

2. Defective cables.

3. Defective ADB4.

4. Defective MIAI card in slot 2.

FAULT

1. Set the display to show mixed parameters by selecting

‘Display’

ISOLATION

mode from the main menu and then selecting ‘Mixed’ sub-menu.

2. Check the fuel oil pressure displayed in the display unit with

Pneumatic gauge.

3. If the difference is excess, replace the sensor and check up.

4. If the difference is negligible but still the fault is logging frequently:

A. Check Slackness of the connectors either at the sensor or at the

ADB4. Tighten the connectors both at the sensor and ADB of the

cable ID: BO.

B. Defective interconnecting cable ID: BO between sensor and

ADB. Replace the cable and check up.

C. Slackness of the connectors either at ADB4 or MEP-660 control

unit. Tighten the cable connectors both at ADB4 and MEP-660

control unit for the cable ID: BJ.

D. Defective interconnecting cable ID: BJ between ADB and MEP-

660 control unit.

E. Defective ADB4. Replace the ADB4 and check.

F. Defective MIAI card in slot 2. Replace the card check up.

260

5.0 ONLY ERROR LOG MESSAGES

PARAMETER

DESCRIPTION

FAULT CODE

2500

FAULT MESSAGE

P1 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1085

CAUSES

FAULT

Refer fault code 1085

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2501

FAULT MESSAGE

P21 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1086

CAUSES

FAULT

Refer fault code 1086

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2502

FAULT MESSAGE

P31 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1087

CAUSES

FAULT

Refer fault code 1087

ISOLATION

261

PARAMETER

DESCRIPTION

FAULT CODE

2503

FAULT MESSAGE

P2 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1088

CAUSES

FAULT

Refer fault code 1088

ISOLATION

DESCRIPTION

PARAMETER

FAULT CODE

2504

FAULT MESSAGE

P22 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1089

CAUSES

FAULT

Refer fault code 1089

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2505

FAULT MESSAGE

P32 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1090

CAUSES

FAULT

Refer fault code 1090

ISOLATION

262

PARAMETER

DESCRIPTION

FAULT CODE

2506

FAULT MESSAGE

S1 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1091

CAUSES

FAULT

Refer fault code 1091

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2507

FAULT MESSAGE

S21 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1092

CAUSES

FAULT

Refer fault code 1092

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2508

FAULT MESSAGE

S31 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1093

CAUSES

FAULT

Refer fault code 1093

ISOLATION

263

PARAMETER

DESCRIPTION

FAULT CODE

2516

FAULT MESSAGE

R1 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective R1 contactor

CAUSES

2. Defective wiring.

FAULT

Most probably this fault can be logged due to delayed drop out of the

ISOLATION

contactor. Adjustment of Pick up / drop out values of R1 contactor

could solve the problem.

1. Check the status of the R1 contactor.

2. If the R1 contactor is in energized position, check the supply across

the operating coil.

3. If the voltage is zero and still R1 is energised, then the R1 it self is

defective. (Due to magnatisation of core). Replace the contactor.

4. If voltage is more than 65V, the digital output card MLSD16 has

gone defective. Replace the card and check up.

After adjustment / replacement o contactor perform once again auto

test and confirm that the contactor is functioning normal.

PARAMETER

DESCRIPTION

FAULT CODE

2517

FAULT MESSAGE

R2 Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective R2 contactor.

CAUSES

2. Defective MLSD16 card.

FAULT

Most probably this fault can be logged due to delayed drop out of the

ISOLATION

contactor. Adjustment of Pick up / drop out values of R2 contactor

could solve the problem.

1. Check the status of the R2 contactor.

2. If the R2 contactor is in energized position, check the supply across

the operating coil.

3. If the voltage is zero and still R2 is energised, then the R2 it self is

defective. (Due to magnatisation of core). Replace the contactor.

4. If voltage is more than 65V, the digital output card MLSD16 has

gone defective. Replace the card and check up.

After adjustment / replacement o contactor perform once again auto

test and confirm that the contactor is functioning normal.

265

PARAMETER

DESCRIPTION

FAULT CODE

2520

FAULT MESSAGE

SANDR Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective Sander relay

CAUSES

2. Defective MLSD16 card.

FAULT

1. Check the status of the Green LED 12 on digital input card MDIP16

ISOLATION

in slot No. 9.

2. If the Green LED is not glowing,

A. Then the fault is due to delayed opening of the interlock.

Change the relay.

3. If the Green LED is glowing, check the status of the relay.

A. If the relay is in energized position, check the voltage across the

relay coil terminals.

a) If the voltage is zero, relay is defective. Replace the relay.

b) If the voltage is more than 65V, MLSD16 card is defective.

Replace the card and check up.

4. Once again perform the Auto test for relays and ensure correct

operation of the SANDR relay.

PARAMETER

DESCRIPTION

FAULT CODE

2522

FAULT MESSAGE

SR Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective SR relay

CAUSES

2. Defective MLSD16 card.

FAULT

1. Check the status of the Green LED 11 on digital input card MDIP16

ISOLATION

in slot No. 9.

2. If the Green LED is not glowing,

A. Then the fault is due to delayed opening of the interlock.

Change the relay.

3. If the Green LED is glowing, check the status of the relay.

A. If the relay is in energized position, check the voltage across the

relay coil terminals.

a) If the voltage is zero, relay is defective. Replace the relay.

b) If the voltage is more than 65V, MLSD16 card is defective.

Replace the card and check up.

4. Once again perform the Auto test for relays and ensure correct

operation of the SR relay.

267

PARAMETER

DESCRIPTION

FAULT CODE

2524

FAULT MESSAGE

FSR / FS21 to FS26 Contactor Stuck closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1074

CAUSES

FAULT

Refer fault code 1074

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2525

FAULT MESSAGE

VCD Relay Stuck closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1149

CAUSES

FAULT

Refer fault code 1149

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2526

FAULT MESSAGE

AFLR Relay Stuck Closed in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1151

CAUSES

FAULT

Refer fault code 1151

ISOLATION

268

PARAMETER

DESCRIPTION

FAULT CODE

2528

FAULT MESSAGE

SLBR / SLBC Contactor Stuck Closed in Auto Test.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1030

CAUSES

FAULT

Refer fault code 1030

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2532

FAULT MESSAGE

P1 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1127

CAUSES

FAULT

Refer fault code 1127

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2533

FAULT MESSAGE

P21 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1128

CAUSES

FAULT

Refer fault code 1128

ISOLATION

269

PARAMETER

DESCRIPTION

FAULT CODE

2534

FAULT MESSAGE

P31 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1129

CAUSES

FAULT

Refer fault code 1129

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2535

FAULT MESSAGE

P2 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1130

CAUSES

FAULT

Refer fault code 1130

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2536

FAULT MESSAGE

P22 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1131

CAUSES

FAULT

Refer fault code 1131

ISOLATION

270

PARAMETER

DESCRIPTION

FAULT CODE

2537

FAULT MESSAGE

P32 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1132

CAUSES

FAULT

Refer fault code 1132

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2538

FAULT MESSAGE

S1 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1124

CAUSES

FAULT

Refer fault code 1124

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2539

FAULT MESSAGE

S21 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1125

CAUSES

FAULT

Refer fault code 1125

ISOLATION

271

PARAMETER

DESCRIPTION

FAULT CODE

2540

FAULT MESSAGE

S31 Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1126

CAUSES

FAULT

Refer fault code 1126

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2545

FAULT MESSAGE

GF Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1018

CAUSES

FAULT

Refer fault code 1018

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2547

FAULT MESSAGE

EXPR Stuck open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1133

CAUSES

FAULT

Refer fault code 1133

ISOLATION

272

PARAMETER

DESCRIPTION

FAULT CODE

2548

FAULT MESSAGE

R1 Stuck Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective R1 contactor

CAUSES

2. Defective wiring.

FAULT

Most probably this fault can be logged due to delayed Pick up of the

ISOLATION

contactor. Adjustment of Pick up / drop out values of R1 contactor

could solve the problem.

1. Check the status of the R1 contactor.

2. If the R1 contactor is in de-energized position, check the supply

across the operating coil.

3. If the voltage is more than 65V and still R1 is de-energised, then

the R1 it self is defective. Replace the contactor.

4. If voltage is zero, the digital output card MLSD16 has gone

defective. Replace the card and check up.

After adjustment / replacement o contactor perform once again auto

test and confirm that the contactor is functioning normal.

PARAMETER

DESCRIPTION

FAULT CODE

2549

FAULT MESSAGE

R2 Stuck Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective R2 contactor

CAUSES

2. Defective wiring.

FAULT

Most probably this fault can be logged due to delayed Pick up of the

ISOLATION

contactor. Adjustment of Pick up / drop out values of R2 contactor

could solve the problem.

1. Check the status of the R2 contactor.

2. If the R2 contactor is in de-energized position, check the supply

across the operating coil.

3. If the voltage is more than 65V and still R2 is de-energised, then

the R2 it self is defective. Replace the contactor.

4. If voltage is zero, the digital output card MLSD16 has gone

defective. Replace the card and check up.

After adjustment / replacement o contactor perform once again auto

test and confirm that the contactor is functioning normal.

273

PARAMETER

DESCRIPTION

FAULT CODE

2552

FAULT MESSAGE

SANDR circuit Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective SANDR relay

CAUSES

2. Defective MLSD16 card.

FAULT

1. Check the status of the Green LED 12 on digital input card MDIP16

ISOLATION

in slot No. 9.

2. If the Green LED is not glowing,

A. Then the status of the SANDR Relay.

B. If the relay is in de-energized position, check the voltage across

the relay coil terminals.

a) If the voltage is zero, MLSD16 card is defective. Replace the

MLSD16 card.

b) If the voltage is more than 65V, relay is defective. Replace

the relay and check up.

3. Once again perform the Auto test for relays and ensure correct

operation of the SANDR relay.

PARAMETER

DESCRIPTION

FAULT CODE

2554

FAULT MESSAGE

SR Relay circuit Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

1. Defective SR relay

CAUSES

2. Defective MLSD16 card.

FAULT

1. Check the status of the Green LED 11 on digital input card MDIP16

ISOLATION

in slot No. 9.

2. If the Green LED is not glowing,

A. Then the status of the SR Relay.

B. If the relay is in de-energized position, check the voltage across

the relay coil terminals.

a) If the voltage is zero, MLSD16 card is defective. Replace the

MLSD16 card.

b) If the voltage is more than 65V, relay is defective. Replace

the relay and check up.

3. Once again perform the Auto test for relays and ensure correct

operation of the SR relay.

275

PARAMETER

DESCRIPTION

FAULT CODE

2556

FAULT MESSAGE

FSR / FS21 to FS26 Contactor Stuck Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1075

CAUSES

FAULT

Refer fault code 1075

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2557

FAULT MESSAGE

VCD Relay circuit Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1150

CAUSES

FAULT

Refer fault code 1150

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2558

FAULT MESSAGE

AFLR Relay circuit Open in Auto Test

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1152

CAUSES

FAULT

Refer fault code 1152

ISOLATION

276

PARAMETER

DESCRIPTION

FAULT CODE

2560

FAULT MESSAGE

SLBR circuit Open in Auto Test.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1057

CAUSES

FAULT

Refer fault code 1057

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2570

FAULT MESSAGE

Communication failed.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Serial Communication Link between Main Control unit and Display unit

CAUSES

has failed.

FAULT

Manual fault clearing through Lap Top/ PC only.

ISOLATION

As the communication has failed the fault can’t be cleared from Display

unit.

As and when the communication works, parameter display starts and

performance of Display Unit will be normal, even though the fault is not

cleared

277

PARAMETER

DESCRIPTION

FAULT CODE

2581

FAULT MESSAGE

VCD Applied Penalty Brake

Move master controller Handle to IDLE

Press Reset to release Brake.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

Refer fault code 1153

CAUSES

FAULT

Refer fault code 1153

ISOLATION

PARAMETER

DESCRIPTION

FAULT CODE

2582

FAULT MESSAGE

High Wheel Slip Occured.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

RECOVERY

PROBABLE

After reduction of 40% of excitation to that particular notch, if wheel

CAUSES

slip not arrested then system will log this message.

FAULT

Automatic when RPM of slipping wheel comes to with in range.

ISOLATION

278

PARAMETER

DESCRIPTION

FAULT CODE

2583

FAULT MESSAGE

Engine Shut Down Unexpectedly.

RESTRICTIONS

ALARM BELL

RESET LEVEL

FAULT

No fault recovery.

RECOVERY

PROBABLE

Engine RPM suddenly drops below

200 rpm, due to external

CAUSES

reasons like OSTA, rack jam, LLOB trip etc.

Engine RPM signal not received by MEP 660 due to

A. Incorrect air gap between cam gear teeth and sensor tip.

B. ESS defective

C. ESS cable defective

D. ESS cable connector slack

E. SSI unit defective.

FAULT

Crank the engine and check for engine RPM signal on the Display.

ISOLATION

If RPM signal is steady then the fault is due to external reasons.

Check the mechanical side, for sudden engine RPM dropping.

If RPM signal is zero,

A. Check ESS1 weld nut and ensure proper welding.

B. Check ESS1 fitment

C. Check for slackness of the ESS1 sensor cable connector at the

ESS and RDB unit.

D. Check continuity of the ESS1 cable from pin to pin, if no

continuity replace the cable.

E. Remove the ESS and check for physical damages on the sensor

tip. If damage replace the sensor.

F. Fit the sensor, as per Maintenance Instructions Document No.

IM-46.

G. Check once again the RPM signal after cranking. If RPM signal

is not coming and ESS is not changed earlier, change ESS with

new one.

H. Recheck the RPM signal. If RPM signal is not coming change SSI

unit.

279

Annexure - 1

Classification and reset procedure of Fault Messages

The faults are classified into three levels such as high, medium and low priority, based on

the severity of the effect of the fault on locomotive operation.

High Priority faults: The faults that can cause damage to engine, total restriction of

loco operation or damage to electrical equipments are classified as high priority faults.

The order of priority of these faults is assigned based on the restrictions imposed on the

locomotive operations due to occurrence of those faults. The faults, which lead to engine

shut down, or prohibition of motoring and dynamic braking etc. are treated as first in

priority faults. The faults leading to reducing power of locomotive are next in priority. The

faults resulting in cutting out of traction motor are next in priority. In case of these

faults,the Alarm Gong (ALG) and the display buzzer will be energised either continuously

or for 30 second The driver can silence the Alarm Gong and buzzer by pressing

the acknowledge switch provided on the display unit. Even otherwise, in case of

most of the faults, the Alarm Gong and buzzer will go OFF after 30 second automatically.

Medium Priority Faults: The faults resulting in reduction of power, prohibition of

dynamic braking, prohibition of battery charging etc. are treated as medium Level faults.

In these cases, the Alarm Gong will be energised for 5 seconds and the display of fault

message and buzzer will continue for 15 seconds.

Low Priority Faults: The faults for which fault tolerance is built in the system and other

faults are treated as low priority faults. In these cases, Alarm Gong will not be energised

but the fault message is displayed and the buzzer in the display unit is energised for 15

seconds.

In case of any fault, the fault is recorded in the error log along with 8 data packs

irrespective of its priority level. It is recommended to down load this error log to and

analyse the fault data packs before going for actual investigation.

Fault reset:

For most of the faults, automatic recognition of fault recovery is provided. When a fault

occurs, the MEP 660 system identifies the fault recovery conditions and announces

recovery for the fault through a display message and automatically removes all

restrictions imposed on the loco operation due to that fault. For some of the faults, the

philosophy of automatic reset of fault when the master controller handle is brought to

idle is used. In this type of faults, the fault is reset three times automatically within an

hour and if the fault repeats the 4^th time, it will not be reset. After that this can only be

reset manually. For very few faults, fault clearing is restricted to manual resetting only.

For any fault, it is possible to manually clear the fault through the display unit, after

attending to it. However, three levels of access are defined for this purpose.

Access level LOW: These faults (irrespective of their priority level) are permitted to be

cleared by the driver. By pressing the “MENU” key, he can select “Faults” menu and from

the options under that menu, he can select “Clear Active Faults” menu and navigate

280

through the faults active at that point of time, which will be displayed one by one based

on their priority, and he can clear any fault by pressing “0” key, when that fault is on

display. If it is an access level-LOW fault, the system clears the fault immediately and

informs the same on the display unit, simultaneously removing any restrictions in loco

operation imposed by that fault.

Access Level Medium: These faults are meant for clearing only by maintenance staff of

the locomotive shed. Clearing of these faults requires higher level of knowledge about

the locomotive. Clearing of these faults can be done only by entering a pass code, which

the system requests to enter, when “0” key is pressed against such fault in “Clear Active

Faults” menu.

Access Level High: The access level is only for very few faults where, in depth

knowledge of locomotive equipment as well as knowledge of MEP

660 system is

necessary. These faults can be cleared only through a LAPTOP PC connected to the MEP

660 system and they cannot be cleared through display unit.

281

Annexure - 2

Control Unit Type MEP 660 {Slot 1 to slot 19 (L to R)}

Slot 1

Analog input card

Type - MAIP8_AU

Slot 2

Analog input card

Type - MIAI

Slot 3

Control card

Type - MAUCC

Slot 4

Control card

Type - MWSCC

Slot 5

Frequency input card

Type - MFIP 16

Slot 6

Analog input card

Type - MAIP8_WS

Slot 7

Analog input card

Type - MAIP8_EP

Slot 8

Control card type

Type - MEPCC

Slot 9

Digital input card

Type - MDIP 16

Slot 10

Digital input card

Type - MDIP 16

Slot 11

Digital input card

Type - MDIP 16

Slot 12

Digital input card

Type - MDIP 16

Slot 13

Digital input card

Type - MDIP 16

Slot 14

Digital output card

Type - MLSD 16

Slot 15

Digital output card

Type - MLSD 16

Slot 16

Digital output card

Type - MHSD 16

Slot 17

Spare dummy

Slot 18

PWM control card

Type - MPWM2

Slot 19

Power supply card

Type - MEPPS

282

Annexure - 3

Digital input status shown with all breakers ON and master handles in IDLE, BKT in

motoring and Reverser in Forward and air brake system working normal. - PCS and PCS1

Status depend on Air brake. Rect. Blo Fail & Rect. Hot status depends on type of rectifier.

Card level input status LEDS

REV-OFF

P22FB

REVRFB

MCOS6

TL6

STOP

REVFFB

ALARM

MCOS5

TL16

TL25

P2FB

P31FB

BKTMFB

OPS FB

MCOS4

TL3

TL64

P21FB

BKTBFB

LWSFB

MCOS3

TL7

TL10

S31FB

AGPR FB

MCOS2

TL12

TL2

P1FB

CK3FB

S21FB

EXPR FB

MCOS1

TL15

TL23

CK2FB

S1FB

ECSRUN

TL0

TL17

RFCBB

CK1FB

P32FB

START

TL8

TL13

GFFB

Loco input status LEDS

REVRFB

MCOS6

STOP

TL6

REV-OFF

P22FB

REVFFB

ALARM

MCOS5

TL16

TL25

P2FB

BKTMFB

OPS FB

MCOS4

TL3

TL64

P31FB

BKTBFB

LWSFB

MCOS3

TL7

TL10

P21FB

AGPR FB

MCOS2

TL12

TL2

P1FB

S31FB

EXPR FB

MCOS1

TL15

TL23

CK3F

S21FB

RFCB

ECSRUN

TL0

TL17

CK2F

S1FB

GFFB

START

TL8

TL13

CK1F

P32FB

Slot-9

Slot-10

Slot-11

283

Annexure - 3

Card level input status LEDS

PSH4

AFLRST

CEB FB

SPAR

PSH1

DEB-Car.

AFL

SPAR

SLBC FB

PSH2

DEB-Eng.

AFL

PSH3

AFLRFB

PCS1

ALRTRB

HL Dim

AGFB

W171

FL FB

PCSF

FSFB

HOR

Rect. Blo.

MMF FB

GFFB

Fail

IBPS

Rect.

Altr.Dsbl

FPFB

HOT

ALRT

Loco input status LEDS

PSH4

AFLRST

CEB-FB

SPAR

PSH1

DEB-Car.

AFL P2

SPAR

DEB-Eng.

PSH2

AFL P1

SLBC FB

PSH3

AFLRFB

PCS1

ALRTRB

HL Dim

AGFB

W171

PCSF

FSFB

HOR

FL FB

MMF FB

GFFB

IBPS

Rect.

ALRTR

Altr.Dsbl

FPFB

HOT

RST

Slot-12

Slot-13

284

Annexure - 4

List Digital output Cable IDs and Pin connections.

No.

Out put device

D.O.

Wire

D.O Card

Slot

Cable

Connect

Chann

No.

or on CU

P1 Coil

DO 00

P1CL

P21 Coil

DO 01

P21CL

P31 Coil

DO 02

P31CL

P2 Coil

DO 03

P2CL

P22 Coil

DO 04

P22CL

P32 Coil

DO 05

P32CL

S1 Coil

DO 06

S1CL

S21 Coil

DO 07

S21CL

S31 Coil

DO 08

S31CL

MDLS 16

BKTM Coil

DO 09

BKMCL

BKTB Coil

DO 10

BKBCL

REVF Coil

DO 11

RVFCL

REVR Coil

DO 12

RVRCL

GF Coil

DO 13

GFCL1

CKC Coil

DO 14

CKCCL

EXPR Coil

DO 15

EXPRC

R1 Coil

DO 16

R1CL

R2 Coil

DO 17

R2CL

GF Coil

DO 18

GFCL2

AGPR Coil

DO 19

AGPRC

SANDR Coil

DO 20

SNDRC

BKIV Coil

DO 21

23D

SR Coil

DO 22

SRCL

DMR Coil

DO 23

DMRCL

MDLS 16

FSR Coil

DO 24

FSRCL

ALRTRB coil

DO 25

ALRR

AFLR Coil

DO 26

RVRCL

CMR Coil

DO 27

AFRCL

SLBR Coil

DO 28

SLBRC

PLPC Coil

DO 29

PLPCCL

Spare

DO 30

Spare

DO 31

DO 32

15A

MHSD 16

DO 33

12A

DO 34

DO 35

Hot Eng. LED

DO 36

16L

CK TIP WELD

DO 37

LED

Ground LED

DO 38

285

Revesion sheet

Document changes from Rev. 1 to Rev.2

a. Fault messages changed from Rev. 1:

1118, 1119, 1120, 1121, 1122 and 1123 - Text message “Traction Motor 1 HOT.

Maximum TM Current LIMITED.” is changed to ‘Excess Traction Motor x Current.

Maximum TM current limited.’

1004, 1005 - Text message “Low Oil Pressure in Governor” is changed to ‘LLOB

Trip. Reset Plunger.’

1019 - Text message “CEB Breaker OFF. Restrictions: Engine Shut Down” is

changed ‘CEB Breaker OFF’. Restrictions removed for this fault.

1155 - Text Message “DEB Engine Breaker Off. Restrictions: Power Limited To 4th

Notch” is changed to ‘DEB ENGINE Breaker OFF’. Restrictions removed for this

fault.

1156 - Text Message “DEB Car Body Breaker Off.Restrictions: Power Limited to

4th Notch” is Changed to ‘DEB CAR BODY Breaker OFF’. Restrictions removed for

this fault.

b. New messages added:

1030, 1064, 1071, 1073, 1097, 1102, 1103, 1104, 1105, 1106, 1107, 1157,

1158, 1159, 1160, 1165, 1166, 1167, 1168, 1169, 1170, 1255, 1260, 1261,

1262, 1263, 1264, 2524, 2525, 2526, 2528, 2556, 2557, 2558, 2560, 2581,

2582, 2583.

c. Revision sheet added.

287

Medha MEP 660. Troubleshooting Manual (2008) - page 3