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● Power Cell Cabinet overheat alarm:
When the cell cabinet temperature is higher than 55
℃
, light fault will alarm, the interface board cell cabinet over-
temperature alarm contact.
1.Check whether the power cell cabinet top fan work normally, the secondary chamber fan switch will trip.
2. Whether the filter net blocked (put a piece of A4 paper on the filter net, check that adsorb or not, and if
necessary, please clean the filter net).
3.Whether the VFD long time run with overload.
4. Whether the ambient temperature over high (it should lower than 45
℃
, if not, please strengthen ventilation, such
as set ventilator on the wall, or equip air flue on the top, or equip refrigerating appliances).
5.Whether the transformer cabinet fan control and protect circuit normally.
● Transformer overheat
1. If the temperature measured by the transformer temperature controller is greater than the tripping temperature
settings (the default is 120
℃
), temperature controller tripping contacts will be closed, and it will cause overheat
heavy fault;
2.Check the items listed in “transformer over temperature alarm”.
● Cabinet overheat alarm:
When the cell cabinet temperature is higher than 60
℃
, it will cause the cabinet over
heat heavy fault. Check the items listed in “power cell cabinet overheat alarm”.
● Cabinet door interlock alarm:
1.Check whether travel switch is compacting with cabinet door touch pieces;
2.Whether the pre-travel and over travel of travel switch are correct;
3.Whether the travel switch electrical function is normal;
4.Otherwise, replace the interface board.
● Controller no communication
1. Confirm the cable connection the I/O board DB9 to the main control board is correct; confirm the power wiring
on the controller and I/O board correct.
2.Replace main control board;
3.Replace I/O board;
4.Cut control voltage and power on again.
● Parameters error:
When modify parameters, if parameter setting is not right (synchronous vector control may have this fault), then it
reports parameter error fault, please modify parameter again and push the reset button.
● External fault
Local MV break button is closed or MV break contact on interface board is closed, system will alarm external fault.
1.Whether MV break button is pushed;
2.Whether MV break terminal is short circuit;
3.The interface board doesn’t work.
