Danfoss vlt 5000 55 kw drive alarm 37 solutions

[@SUNEEL_SSC_HELP]

Very good work......

[@VFDrepairing]

Thanks a lot...

[@khawajaahmed4842]

Sir i hv 2 nos of Danfoss VLT 5000 which indicats earth fault and trips ....after reseting trip lock for 2,3 times then it wil continue working normaly ....kindly suggest me what is the rreason and solution as for as current unballance issue i hv chnaged current sensor also?
Kindly

[@sethikumar3581]

37 alarm hai or warning ka led vi jal Rahi hai

[@Vijaytech28]

Disk triplock earth fault 14 a rha hai sir vlt 5000 mai

[@VFDrepairing]

CT card replace karo

[@jkshukla101]

Sir hamare pass ak drive hai usme alarm 8 aata hai
Uska contactor hold nahi ho Raha hai plz sir help me

[@VFDrepairing]

Ribbon cable change karke check Karo

[@sanwarmalgadri5338]

mere bhi ek drive he same model 20hp ka
machine kuch time chlti or bad alarm 37 aajata he reset krne pr reset bhi ho jata he pr kuch time bad aalarm aata he

[@VFDrepairing]

Change the zener diodes in igbt pcb and also check firing section capacitors

[@VFDrepairing]

Check your igbt from gate side one of the 3 igbt is malfunctioning