YASKAWA FSDrive-MV1000 Series Instructions For Use Manual page 150

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