Mitsubishi Electric 800 Series Instruction Manual page 24

List of fault displays
6.2
List of fault displays
Abbreviation
LOCD Password locked
Er1 to Er4
Parameter write error
Er8
rE1 to rE8 Copy operation error
Err. RES signal ON or communication circuit fault
OL Stall prevention (overcurrent)
oL Stall prevention (overvoltage)
RB Regenerative brake pre-alarm
TH Electronic thermal relay function pre-alarm
PS PU stop
MT1 to MT3 Maintenance signal output
CP Parameter copy
SL Speed limit indication
Continuous operation during communication
CF
fault
SA SA
UF USB host error
LDF Load fault warning
HP1 Home position return setting error
HP2 Home position return uncompleted
HP3 Home position return parameter setting error
FN Fan alarm
E.OC1 Overcurrent trip during acceleration
E.OC2 Overcurrent trip during constant speed
E.OC3 Overcurrent trip during deceleration or stop
Regenerative overvoltage trip during
E.OV1
acceleration
Regenerative overvoltage trip during constant
E.OV2
speed
Regenerative overvoltage trip during
E.OV3
deceleration or stop
Inverter overload trip (electronic thermal relay
E.THT
function)
Motor overload trip (electronic thermal relay
E.THM
function)
E.FIN Heatsink overheat
E.IPF Instantaneous power failure
E.UVT Undervoltage
E.ILF Input phase loss
E.OLT Stall prevention stop
E.GF Output side earth (ground) fault overcurrent
E. SOT Loss of synchronism detection
E.LUP Upper limit fault detection
E.LDN Lower limit fault detection
E.LF Output phase loss
E.OHT External thermal relay operation
E.PTC PTC thermistor operation
E.OPT Option fault
E.OP1 Communication option fault
E. 1 to E. 3 Option fault
E.PE Parameter storage device fault
E.PUE PU disconnection
E.RET Retry count excess
E.PE2 Parameter storage device fault
E. 5 to E. 7
CPU fault
E.CPU
Operation panel power supply short circuit/
E.CTE
RS-485 terminals power supply short circuit
E.P24 24 VDC power fault
E.CDO Abnormal output current detection
24
TROUBLESHOOTING
Name
Abbreviation
E.IOH Inrush current limit circuit fault
E.SER Communication fault (inverter)
E.AIE Analog input fault
E.OS Overspeed occurrence
E.OSD Speed deviation excess detection
E.ECT Signal loss detection
E.OD Excessive position fault
E.MB1 to E.MB7 Brake sequence fault
E.EP Encoder phase fault
E.EF External fault during output operation
E. BE Brake transistor alarm detection
E. USB USB communication fault
E.11 Opposite rotation deceleration fault
E.13
Internal circuit fault
E.PBT
E.SAF Safety circuit fault
E.LCI 4 mA input fault
E.PCH Pre-charge fault
E.PID PID signal fault
E.16 to E.20 User definition error by the PLC function
E.0 No fault history
RD Backup in progress
WR Restoration in progress
If faults other than the above appear, contact your sales
representative.
Name