Mitsubishi Electric FR-A741-5.5K Installation Manualline page 29

7.2 List of alarm display
Operation Panel Indication
E - - -
HOLD
to
to
Er1 to 4 Parameter write error
to rE1 to
rE4
Err.
OL
oL
TH
PS
MT
CP
SL
FN
E.OC1
E.OC2
E.OC3
E.OV1
E.OV2
E.OV3
E.THT
E.THM
E.FIN
E.IPF
E.UVT
E.ILF*
E.OLT
E.GF
E.LF
E.OHT
Meaning
Faults history
Operation panel lock
Copy operation error
Inverter reset
Stall Prevention (overcurrent)
Stall prevention (overvoltage)
Electronic thermal relay function
prealarm
PU Stop
Maintenance signal output
Parameter copy
Speed limit indication
(Output during speed limit)
Fan alarm
Overcurrent shut-off during
acceleration
Overcurrent shut-off during constant
speed
Overcurrent shut-off during
deceleration or stop
Regenerative overvoltage shut-off
during acceleration
Regenerative overvoltage shut-off
during constant speed
Regenerative overvoltage shut-off
during deceleration or stop
Inverter overload shut-off
(electronic thermal relay function)
Motor overload shut-off
(electronic thermal relay function)
Fin overheat
Instantaneous power failure
Undervoltage
Input phase failure
Stall prevention
Output side earth (ground) fault
overcurrent
Output phase loss
External thermal relay operation
Operation Panel Indication
E.PTC* PTC thermistor operation
E.OPT
E.OP3
to E.1 to
E.3
E.PE
E.PUE
E.RET
E.PE2* Parameter storage device fault
E.6
E.7
E.CPU
E.CTE
E.P24
E.CDO*
E.IOH*
E.SER* Communication error (inverter)
E.AIE*
E.OS
E.OSD
E.ECT
E.OD
E.MB1
to
to
E.MB7
E.EP
E.4
E.8
E.10
E.11
E.13
E.15
* If an E.ILF, E.PTC, E.PE2, E.CDO, E.IOH or E.AIE fault occurs when using the
FR-PU04, "Fault 14" is displayed on the FR-PU04.
TROUBLESHOOTING
Meaning
Option alarm
Communication option alarm
Option fault
Parameter storage device fault
PU disconnection
Retry count excess
CPU error
Operation panel power supply short
circuit, RS-485 terminal power
supply short circuit
24V DC power output short circuit
Output current detection value
exceeded
Inrush current limit circuit fault
Analog input error
Overspeed occurence
Speed deviation excess detection
Signal loss detection
Excessive position error
Brake sequence error
Encoder phase error
Converter overcurrent
Power supply fault
Converter transistor protection
thermal operation (electronic
thermal)
Opposite rotation deceleration fault
Internal circuit error
Converter circuit fault
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