Protective Functions; Errors (Alarms); Error (Alarm) Definitions - Mitsubishi Electric FR-E540-0.4K-EC Instruction Manual

5.1 Errors (Alarms)

5 PROTECTIVE FUNCTIONS

5.1 Errors (Alarms)
If any fault has occurred in the inverter, the corresponding protective function is activated
to bring the inverter to an alarm stop and automatically give the corresponding error
(alarm) indication on the optional control panel or the parameter unit display.
If your fault does not correspond to any of the following errors or if you have any other
problem, please contact your sales representative.
• Retention of alarm output signal ....When the magnetic contactor (MC) provided on
• Alarm indication .............................When the protective function is activated, the
• Resetting method ...........................When the protective function is activated, the
• When the protective function is activated, take the corresponding corrective action,
then reset the inverter, and resume operation.

5.1.1 Error (alarm) definitions

(1) Major faults
Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
the power supply side of the inverter is opened at
the activation of the protective function, the
inverter's control power will be lost and the alarm
output will not be held.
operation panel display automatically switches to
the above indication.
inverter output is kept stopped. Unless reset,
therefore, the inverter cannot restart. Switch
power off once, then on again; or apply RES
signal for more than 0.1 seconds. Kept on, "Err."
appears (flickers) to indicate that the inverter is
being reset.
E. OC1
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.
Increase the acceleration time.
E. OC2
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.
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PROTECTIVE FUNCTIONS
FR-PU04 OC During Acc
FR-PU04 Stedy Spd OC