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Dear Sir,
We are facing a problem in our Frame -5 Mark VI VPRO card. The following diagnostic alarms are coming in Z VPRO intermittently and are getting reset after diagnostic reset after sometime:
1) Fault code 200, l4etr1_fb voting mismatch (K1_fdbk voted logic X-1 , Y-1 ,Z -0)
Trip solenoid 20FG-1 is connected to terminal - 1
2) Fault code 201 ,l4etr2_fb voting mismatch(K2_fdbk voted logic X-1 , Y-1 ,Z -0)
Trip solenoid 20FL-1 is connected to terminal-2
3) Fault code 100 ,TREG Solenoid Voltage -02 mismatch requested state
This may be due to following reason:-
1) ETR KZ1 and KZ2 are in de-energized condition (May be due to 28V power supply failure in VPRO Z or corresponding relay driver has failed)
2) The auxillary contacts of KZ1 and KZ2 from which the feedback (energized or de-energized) has been taken is malfunctioning intermittently
Z VPRO power- normal, Status - alarm state
Are there any other reasons which can generated above alarms?
What are the possible checks which can be done online (unit running condition) to ascertain the root cause of the above diagnostic alarms?
We are facing a problem in our Frame -5 Mark VI VPRO card. The following diagnostic alarms are coming in Z VPRO intermittently and are getting reset after diagnostic reset after sometime:
1) Fault code 200, l4etr1_fb voting mismatch (K1_fdbk voted logic X-1 , Y-1 ,Z -0)
Trip solenoid 20FG-1 is connected to terminal - 1
2) Fault code 201 ,l4etr2_fb voting mismatch(K2_fdbk voted logic X-1 , Y-1 ,Z -0)
Trip solenoid 20FL-1 is connected to terminal-2
3) Fault code 100 ,TREG Solenoid Voltage -02 mismatch requested state
This may be due to following reason:-
1) ETR KZ1 and KZ2 are in de-energized condition (May be due to 28V power supply failure in VPRO Z or corresponding relay driver has failed)
2) The auxillary contacts of KZ1 and KZ2 from which the feedback (energized or de-energized) has been taken is malfunctioning intermittently
Z VPRO power- normal, Status - alarm state
Are there any other reasons which can generated above alarms?
What are the possible checks which can be done online (unit running condition) to ascertain the root cause of the above diagnostic alarms?