Chapter 8 - Troubleshooting & Maintenance
184
Protective
Function
Cause Remedy
3) ADC Offset (current feedback circuit fault)
Communication
Fault
1) Faulty connection between inverter and keypad
2) Inverter CPU malfunction
1) Check connector.
2) Exchange inverter.
Operating
Speed
Reference is
Lost
LOP (Loss of reference from the Option),
LOR (Remote)
LOV (V1),
LOI (I),
LOX (Sub-V2, ENC)
Eliminate cause of fault.
Inverter
Overload
1) Load is larger than inverter rating.
2) Incorrect inverter capacity selected.
1) Increase motor and/or inverter capacity.
2) Select correct inverter capacity.
M/C Fail
M/C does not work properly. Check the operating contact is closed after giving
signal.
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