Mitsubishi FR-D720-5.5K

97
4
TROUBLESHOOTING
List of fault or alarm indications
4.2 List of fault or alarm indications
∗ If a fault occurs when using with the FR-PU04, "Fault 14" is displayed on the
FR-PU04.
Operation Panel
Indication
Name
Refer
to
Page
Error message
E---
Faults history
108
HOLD Operation panel lock
98
LOCd Password locked
98
Er1 to 4 Parameter write error 98
Err.
Inverter reset
99
Warnings
OL
Stall prevention
(overcurrent)
99
oL
Stall prevention
(overvoltage)
99
RB
Regenerative brake
prealarm
100
TH
Electronic thermal relay
function prealarm
100
PS
PU stop
100
MT
Maintenance signal output
100
UV Undervoltage 100
SA
Safety stop
101
Alarm
FN Fan alarm 101
Fault
E.OC1
Overcurrent trip during
acceleration
101
E.OC2
Overcurrent trip during
constant speed
101
E.OC3
Overcurrent trip during
deceleration or stop
102
E.OV1
Regenerative overvoltage
trip during acceleration
102
E.OV2
Regenerative overvoltage
trip during constant speed
102
E.OV3
Regenerative overvoltage
trip during deceleration or
stop
102
E.THT
Inverter overload trip
(electronic thermal relay
function)
103
E.THM
Motor overload trip
(electronic thermal relay
function)
103
E.FIN
Fin overheat
103
to
Fault
E.ILF ∗
Input phase loss
104
E.OLT Stall prevention 104
E. BE
Brake transistor alarm
detection
104
E.GF
Output side earth (ground)
fault overcurrent at start
104
E.LF
Output phase loss
104
E.OHT
External thermal relay
operation
105
E.PTC∗
PTC thermistor operation 105
E.PE
Parameter storage device
fault
105
E.PUE
PU disconnection
105
E.RET Retry count excess 105
/
E.5 /
E.CPU
CPU fault 106
E.CDO∗
Output current detection
value exceeded
106
E.IOH ∗
Inrush current limit circuit
fault
106
E.AIE ∗
Analog input fault
106
E.SAF ∗ Safety circuit fault 106
Operation Panel
Indication
Name
Refer
to
Page