Trouble with Tamping units.
You are on n4net and this is indian railway track machine trouble shooting with you.
This is a series of trouble shooting technique for the track machine working in Indian Railway. When you study this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.
Now we study about "Tamping Unit"9) Fault :- Lining automatic not working.
Probable causes and Remidial action.A) No system pressure.
Ensure system pressure.
B) No servo current indication on Galvanometer 18G2 (at position-3) even if lining indicator is showing deflection.
1. Check servo valve plug for loose connection.
2. Check power supply 24V and 12V on program panel. If OK, check +15V and + 10V on PCB EK813 (10U4). If defective, replace PCB EK813. If + 15V and +10V is not available, lining indicator will not show deflection.
3. Check signal Q05 on program panel -
* If Q05 is not coming, check Q0B- X0B is coming or tamping unit attained below middle position.
* For Q0B-X0B, X15 & X16 input signal should come.
* X15 and X16 will come when relay Re.3 of EK16 of LHS & RHS is operated. (Tamping unit below middle position). If X15 and X16 is not indicated, check relay Re3. Replace defective relay Re3.
If Q05 is not coming-
Check signal Q0A. If not, check switch for auto-lining is either not operated or defective. Replace defective switch.
Signal for sensor lifting/ lining circuit X24 (LHS), X25 (RHS) not coming-
Sensor out of position or defective.
Replace defective sensor or bye- pass switch. If bye-passed, X2F should indicate.
If Q05 is OK and still no servo current, PCB EK349 or EK290 is defective. Replace defective PCB.
C) No lining indication.
Check power supply 24V and 12V. If OK, check PCB EK813 for +15 V and + 10V
If PCB 813 (10U4) is OK, check output from lining transducer, measuring transducer and digital potentiometer.
D) No supply to bye-pass valve.
If servo current is showing on program panel and no supply for bye-pass valve, check relay Re7 (EL.T.7002 S4) on PCB EK349. Replace defective relay.
You are on n4net and this is indian railway track machine trouble shooting with you.
This is a series of trouble shooting technique for the track machine working in Indian Railway. When you study this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.
Now we study about "Tamping Unit"
9) Fault :- Lining automatic not working.
Probable causes and Remidial action.
A) No system pressure. Ensure system pressure.
B) No servo current indication on Galvanometer 18G2 (at position-3) even if lining indicator is showing deflection.
1. Check servo valve plug for loose connection.
2. Check power supply 24V and 12V on program panel. If OK, check +15V and + 10V on PCB EK813 (10U4). If defective, replace PCB EK813. If + 15V and +10V is not available, lining indicator will not show deflection.
3. Check signal Q05 on program panel -
* If Q05 is not coming, check Q0B- X0B is coming or tamping unit attained below middle position.
* For Q0B-X0B, X15 & X16 input signal should come.
* X15 and X16 will come when relay Re.3 of EK16 of LHS & RHS is operated. (Tamping unit below middle position). If X15 and X16 is not indicated, check relay Re3. Replace defective relay Re3.
If Q05 is not coming-
Check signal Q0A. If not, check switch for auto-lining is either not operated or defective. Replace defective switch.
Signal for sensor lifting/ lining circuit X24 (LHS), X25 (RHS) not coming-
Sensor out of position or defective.
Replace defective sensor or bye- pass switch. If bye-passed, X2F should indicate.
C) No lining indication.
Check power supply 24V and 12V. If OK, check PCB EK813 for +15 V and + 10V
If PCB 813 (10U4) is OK, check output from lining transducer, measuring transducer and digital potentiometer.
D) No supply to bye-pass valve.
If servo current is showing on program panel and no supply for bye-pass valve, check relay Re7 (EL.T.7002 S4) on PCB EK349. Replace defective relay.
No comments:
Post a Comment