List Of Fault Or Alarm Indications - Mitsubishi Electric FR-D720-008 Instruction Manual

5.2

List of fault or alarm indications

Operation Panel
Indication
E---
HOLD
LOCd
to
Er1 to 4
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
Refer
Name to
Page
Faults history
242
Operation panel lock
248
Password locked
248
Parameter write error 248
Inverter reset 249
Stall prevention
249
(overcurrent)
Stall prevention
249
(overvoltage)
Regenerative brake
250
prealarm
Electronic thermal relay
250
function prealarm
PU stop 250
Maintenance signal output 250
250
Undervoltage
Safety stop 251
251
Fan fault
Overcurrent trip during
251
acceleration
Overcurrent trip during
251
constant speed
Overcurrent trip during
252
deceleration or stop
Regenerative overvoltage
252
trip during acceleration
Regenerative overvoltage
252
trip during constant speed
Regenerative overvoltage
252
trip during deceleration or
stop
Inverter overload trip
(electronic thermal relay 253
function)
Motor overload trip
(electronic thermal relay 253
function)
253
Fin overheat
List of fault or alarm indications
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.
Refer
Name to
Page
254
Input phase loss
Stall prevention 254
Brake transistor alarm
254
detection
Output side earth (ground)
254
fault overcurrent at start
Output phase loss 254
External thermal relay
255
operation
255
PTC thermistor operation
Parameter storage device
255
fault
PU disconnection 255
255
Retry count excess
CPU fault 256
Output current detection
256
value exceeded
Inrush current limit circuit
256
fault
Analog input fault 256
Safety circuit fault 256
247
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