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6
TROUBLESHOOTING
List of fault or alarm indications
6.2 List of fault or alarm indications
Operation Panel
Indication
Name
Refer
to
Page
Error message
E---
Faults history
188
HOLD Operation panel lock
194
LOCd
Password locked
194
/
/
Er1 /
Er2 /
Er4
Parameter write error
194
Err.
Inverter reset
194
Warning
OL
Stall prevention
(overcurrent)
195
oL
Stall prevention
(overvoltage)
195
RB
Regenerative brake
prealarm
196
TH
Electronic thermal relay
function prealarm
196
PS PU stop 195
MT
Maintenance signal output
196
UV
Undervoltage
196
SA
Safety stop 196
EV
24V external power supply
operation
197
Alarm
FN
Fan alarm
197
Fault
E.OC1
Overcurrent trip during
acceleration
197
E.OC2
Overcurrent trip during
constant speed
197
E.OC3
Overcurrent trip during
deceleration or stop
198
E.OV1
Regenerative overvoltage
trip during acceleration
198
E.OV2
Regenerative overvoltage
trip during constant speed
198
E.OV3
Regenerative overvoltage
trip during deceleration or
stop
198
E.THT
Inverter overload trip
(electronic thermal relay
function)
199
E.THM
Motor overload trip
(electronic thermal relay
function)
199
E.FIN
Heatsink overheat
199
Fault
E.ILF
Input phase loss
199
E.OLT
Stall prevention stop 200
E. BE
Brake transistor alarm
detection
200
E.GF
Output side earth (ground)
fault overcurrent at start
200
E.LF Output phase loss 200
E.OPT
Option fault
201
E.OP1
Communication option
fault
200
E. 1 Option fault 201
E.PE
Parameter storage device
fault
201
E.PE2
Internal board fault
201
E.RET
Retry count excess
201
/
/
/
E. 5/
E. 6/
E. 7/
E.CPU
CPU fault
202
E.IOH
Inrush current limit circuit
fault
202
E.13
Internal circuit fault
202
E.SAF
Safety circuit fault 202
Operation Panel
Indication
Name
Refer
to
Page