Question about Inverter Yaskawa F7 Drive
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Posted on Jan 02, 2017
SOURCE: always showing alarm EOC,EOP
The system that you described is a closed-loop system. The inverter tells the motor what to do and the encoder send information back to the inverter to verify the operations.
With out knowing part# and serial number of the unit in question, I do not know exactly which inverter you are having problems with.
With E.OC error, there is a lot of current demand on the inverter. This could mean a short in the motor, motor leads, connections or inside of the inverter. This could also be caused by the encoder feedback loop being defective. If the inverter tells the motor to run at 1000rpm and the feedback tells the inverter it is only running at 5rpm, the inverter will send out more current to get the motor up to speed.
Since you are getting multiple errors, there could be other internal problems with the inverter especially if the unit is old and contaminated internally.
Posted on Jun 03, 2015
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