YASKAWA FSDrive-MV1000 Series - Page 150

5.4 Fault Detection
150 YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
Digital Operator Display Fault Name
CFA
nn OC
Overcurrent
The output current has exceeded 132% of the rated current of the Power Cell.
Cause Possible Solutions
Load is too heavy. Reduce the load.
The motor or cable insulation is conducting
electricity.
Replace the motor or cable.
The output side cable wiring is incorrect. Correct the wiring.
The acceleration and deceleration times are too
short.
Increase the acceleration and deceleration times.
The PG is not mounted correctly. Mount the PG correctly.
PG cable is disconnected. Reconnect the cable.
PG cable wiring is incorrect. Correct the wiring.
The PG settings are incorrect. Correct the PG settings.
The motor parameters are not set correctly. Set the motor parameters correctly.
Digital Operator Display Fault Name
CFA
nn OH
IGBT Overheating
A thermistor temperature met or exceeded the value set for L8-02.
Cause Possible Solutions
Cooling fan fault possibly caused by inadequate
airflow.
Replace the cooling fan.
The intake filter is soiled. Clean or replace the intake filter.
The heatsink of the Power Cell is soiled. Clean the heatsink of the Power Cell.
Fault of the cell control board (CCB),
thermistor or Power Cell
Replace the CCB, thermistor, or Power Cell.
Parameter setting error Check the parameter settings.
Digital Operator Display Fault Name
CFA
nn OH1
IGBT Overheating 1
A thermistor temperature has exceeded the protection level.
Cause Possible Solutions
Cooling fan fault possibly caused by inadequate
airflow.
Replace the cooling fan.
The intake filter is soiled. Clean or replace the intake filter.
The heatsink of the Power Cell is soiled. Clean the heatsink of the Power Cell.
Fault of the cell control board (CCB),
thermistor or Power Cell
Replace the CCB, thermistor, or Power Cell.
Parameter setting error Check the parameter settings.
Digital Operator Display Fault Name
CFA
nn OV
Overvoltage 1
The P side or N side voltage in the DC bus has exceeded the overvoltage detection level.
Cause Possible Solutions
The deceleration time is too short. Increase the deceleration time.
The Power Cell input voltage is incorrect. Correct the Power Cell input voltage.
The Power Cell input power fuse has blown. Replace the Power Cell input power fuse.
Cell control board fault Replace the cell control board.
Digital Operator Display Fault Name
CFA
nn OV2
Overvoltage 2
The P side or N side voltage in the DC bus has exceeded the overvoltage detection level.
Cause Possible Solutions
The deceleration time is too short. Increase the deceleration time.
The Power Cell input voltage is incorrect. Correct the Power Cell input voltage.
The Power Cell input power fuse has blown. Replace the Power Cell input power fuse.
Cell control board fault Replace the cell control board.