Mitsubishi Electric FR-F 740 Series Installation Manuallines page 23

6.1 List of alarm display
Operation Panel
Indication
HOLD Operation panel lock
to
Er1 to 4 Parameter write error
to
rE1 to 4 Copy operation error
Err. Error
OL Stall Prevention (overcurrent)
oL Stall prevention (overvoltage)
RB Regenerative brake prealarm
Electronic thermal relay function
TH
prealarm
PS PU Stop
MT Maintenance signal output
CP Parameter copy
FN Fan fault
Overcurrent shut-off during
E.OC1
acceleration
Overcurrent cut-off during constant
E.OC2
speed
Overcurrent shutoff during
E.OC3
deceleration or stop
Regenerative overvoltage
E.OV1
cut-off during acceleration
Regenerative overvoltage
E.OV2
cut-off during constant speed
Regenerative overvoltage
E.OV3
shut-off during deceleration or stop
Inverter overload shutoff
E.THT
(electronic thermal relay function)
Motor overload shutoff
E.THM
(electronic thermal relay function)
E.FIN Fin overheat
Instantaneous power failure
E.IPF
protection
Brake transistor alarm detection/
E.BE
Internal circuit error
Name
* If when employing the operating unit FR-PU04 one of the errors "E.ILF, E.PTC, E.PE2,
E.CDO, E.IOH, E.SER, E.AIE, E.13" occurs, then "Fault 14" will be displayed.
TROUBLESHOOTING
Operation Panel
Indication
E.UVT Undervoltage protection
E.ILF* Input phase failure
E.OLT Stall Prevention
Output side earth (ground) fault
E.GF
overcurrent protection
E.LF Output phase failure protection
E.OHT External thermal relay operation
E.PTC* PTC thermistor operation
E.OPT Option alarm
Option slot alarm
E.OP1
(e. g. communication error)
Option alarm (e. g. connection or
E. 1
contact fault)
E.PE Parameter storage device alarm
E.PUE PU disconnection
E.RET Retry count excess
E.PE2* Parameter storage device alarm
/
E. 6 /
E. 7 / CPU error
/
E.CPU
Operation panel power supply short
circuit
E.CTE
RS-485 terminal power supply short
circuit
E.P24 24VDC power output short circuit
Output current detection value
E.CDO*
exceeded
E.IOH* Inrush resistor overheat
E.SER* Communication error (inverter)
E.AIE* Analog input error
E.13* Internal circuit error
Name
*2
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