GA-75 VSD converter fault
Our compressor will start but immediately will stop.
Error says converter failure.
I reset and start again and it runs perfectly all day until the next morning.
Its like something is sticking and frees up after first attempt to start.
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GA-75 Element Temperature ROTA Error
I am facing the problem in my Atlas Copco GA-75 Air Compressor. It is showing the "Element Temperature Rota Error". Kindly help me that what could be the possible causes for this Error?
GA75: Peaks observed in current immediately after...
Greetings of the day…
GA75: Peaks observed in current immediately after the delta changeover for fraction of seconds.
We have observed below during its changeover from UNLOAD to LOAD i.e. STAR to DELTA.
Compressor Motor: 75 KW with Star- Delta starter, c/o time is 10 sec from STAR to DELTA.
During Unload condition: Motor starting current is about 300-325 A and then it remains normal up to time period of 10sec i.e. 80-85 A.
From Unload to Load conditions i.e. after 10 sec, motor switches over from STAR to DELTA, during this period motor is taking higher current i.e. 1100-1200A which is abnormal.
Kindly help to solve the above mentioned by providing your valuable insights.