Protective Functions; List Of Fault Indications - Mitsubishi Electric FREQROL-CS80 Manual

Protective Functions

 List of fault indications
If the displayed message does not correspond to any of the following or if you have any other problem, contact your sales representative.
 Error message
• Operation and setting faults are displayed on the operation panel
and parameter unit. The inverter output is not shut off.
Operation panel indication
HOLD
LOCD
to
Er1 to
Er4
Err.
 Warning
• The inverter output is not shut off even when a warning is
displayed. However, failure to take appropriate measures will lead
to a fault.
Operation panel indication
OLC
OLV
TH
PS
9
UV
IH
26
Name
Operation panel lock
Password locked
Parameter write error
Error
Name
Stall prevention (overcurrent)
Stall prevention (overvoltage)
Electronic thermal O/L relay pre-alarm
PU stop
Undervoltage
Inrush current limit resistor overheat
 Fault
• A protective function is activated, the inverter output is shut off,
and the fault (ALM) signal is output.
Operation panel indication
E.OC1 Overcurrent trip during acceleration
E.OC2 Overcurrent trip during constant speed
Overcurrent trip during deceleration or
E.OC3
stop
Regenerative overvoltage trip during
E.OV1
acceleration
Regenerative overvoltage trip during
E.OV2
constant speed
Regenerative overvoltage trip during
E.OV3
deceleration or stop
Inverter overload trip (electronic thermal
E.THT
relay function)
Motor overload trip (electronic thermal
E.THM
relay function)
Heatsink overheat
E.FIN
Undervoltage
E.UVT
Input phase loss
E.ILF
Stall prevention stop
E.OLT
Output side earth (ground) fault
E.GF
overcurrent
Output phase loss
E.LF
External thermal relay operation
E.OHT
E.PE
Parameter storage device fault
E.PE2
PU disconnection
E.PUE
Retry count excess
E.RET
E.CPU
CPU fault
E. 5
Abnormal output current detection
E.CDO
Inrush current limit circuit fault
E.IOH
4 mA input fault
E.LCI
Inverter output fault
E.E10
If faults other than the above appear, contact your sales
representative.
Name