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Is the usage frequency of the
Are the cooling fins clogged?
Is there any error in the inverter
2
. Reduce the braking frequency.
Is there an error in the cooling fan?
Is the ambient temperature too
Keep the ambient temperature within the
Is there an output short circuit or
ground fault? (Check the motor
winding and insulation resistance.)
Was rapid acceleration attempted?
Did the load fluctuate suddenly?
Was rapid deceleration attempted?
Were the motor's mechanical
brakes applied too quickly?
Repair the output short circuit and ground fault.
(Repair or replace the motor.)
Lengthen the deceleration time.
Eliminate the sudden fluctuate in the load.
Lengthen the deceleration time.
Investigate the braking operation.
Is the cooling fan's power supply
Is the cooling fan's power supply
Repair the short-circuited section.
Replace the cooling fan power supply.
Is the DC circuit short circuited?
Is there an output short circuit or
ground fault? (Check the motor
winding and insulation resistance.)
Repair the short-circuited section, and replace the
Repair the output short circuit and ground fault.
(Repair or replace the motor.)
Is there an error in the cooling fan?
Are the cooling fins clogged?
Is the ambient temperature too
Keep the ambient temperature within the
Is the gate output short circuited?
Is there an error in the control
Repair the short-circuited section.
Replace the control power supply board.
l When the protective function is activated, take proper corrective action, reset the inverter, then resume
operation.
