Error (Alarm) Definitions - Mitsubishi FR-E520-0.1KN Instruction Manual

5.1.2 Error (alarm) definitions

(1) Major faults
FR-PU04 Indication
Name
Description
Check point
Corrective action
FR-PU04 Indication
Name
Description
Check point
Corrective action
FR-PU04 Indication
Name
Description
Check point
Corrective action
OC During Acc
Overcurrent shut-off during acceleration
When the inverter output current reaches or exceeds
approximately 200% of the rated current during acceleration,
the protective circuit is activated to stop the inverter output.
Check for sudden acceleration.
Check for output short-circuit/ground fault.
Check whether main circuit power (R, S, T) is supplied or not.
Increase the acceleration time.
Supply main circuit power (R, S, T).
Stedy Spd Oc
Overcurrent shut-off during constant speed
When the inverter output current reaches or exceeds
approximately 200% of the rated current during constant
speed, the protective circuit is activated to stop the inverter
output.
Check for sudden load change.
Check for output short-circuit/ground fault.
Keep load stable.
OC During Dec
Overcurrent shut-off during deceleration
When the inverter output current reaches or exceeds
approximately 200% of the rated current during deceleration
(other than acceleration or constant speed), the protective
circuit is activated to stop the inverter output.
Check for sudden speed reduction.
Check for output short-circuit/ground fault.
Check for too fast operation of motor's mechanical brake.
Increase the deceleration time.
Adjust brake operation.
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PROTECTIVE FUNCTIONS
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