List Of Fault Or Alarm Indications - Mitsubishi Electric FR-D720-008 Installation Manuallines

TROUBLESHOOTING
7.2

List of fault or alarm indications

Operation Panel
Indication
E---
HOLD
to
Er1 to 4
LOCD
Err.
OL
oL
RB
TH
PS
MT
UV
SA
FN
E.OC1
E.OC2
E.OC3
E.OV1
E.OV2
E.OV3
E.THT
E.THM
E.FIN
20
Name
Faults history
Operation panel lock
Parameter write error
Password locked
Inverter reset
Stall prevention (overcurrent)
Stall prevention (overvoltage)
Regenerative brake pre-alarm
Electronic thermal relay function
pre-alarm
PU stop
Maintenance signal output
Undervoltage
Safety stop
Fan alarm
Overcurrent trip during
acceleration
Overcurrent trip during constant
speed
Overcurrent trip during
deceleration or stop
Regenerative overvoltage trip
during acceleration
Regenerative overvoltage trip
during constant speed
Regenerative overvoltage trip
during deceleration or stop
Inverter overload trip (electronic
thermal O/L relay function)
Motor overload trip (electronic
thermal O/L relay function)
Heatsink overheat
Operation Panel
Indication
E.ILF ∗
E.OLT
E. BE
E.GF
E.LF
E.OHT
E.PTC ∗
E.PE
E.PUE
E.RET
E.5
E.CPU
E.CDO∗
E.IOH ∗
E.AIE ∗
E.SAF ∗
∗ If a fault occurs when using with the FR-PU04, "Fault 14" is displayed on
the FR-PU04.
Name
Input phase loss
Stall prevention stop
Brake transistor alarm detection
Output side earth (ground) fault
overcurrent at start
Output phase loss
External thermal relay operation
PTC thermistor operation
Parameter storage device fault
PU disconnection
Retry count excess
CPU fault
Output current detection value
exceeded
Inrush current limit circuit fault
Analog input fault
Safety circuit fault