The List Of Fault Displays - Mitsubishi Electric 800 Series Instruction Manual

6.3

The list of fault displays

If the displayed message does not correspond to any of the following or if you have any other problem, please contact your
sales representative.
Error message
• A message regarding operational fault and setting fault by
the operation panel and the parameter unit is displayed.
The inverter does not trip.
Abbreviation
LOCD Password locked
Er1 to Er 4
Parameter write error
Er8
rE1 to rE8 Copy operation error
RES signal ON or communication circuit
Err.
fault
Warning
• The inverter does not trip even when a warning is
displayed. However, failure to take appropriate measures
will lead to a fault.
Abbreviation
OL Stall prevention (overcurrent)
oL Stall prevention (overvoltage)
RB Regenerative brake pre-alarm
TH Electronic thermal relay function pre-alarm
PS PU stop
SL Speed limit indication
CP Parameter copy
SA SA
MT1 to MT3 Maintenance signal output
UF USB host error
HP1 Home position return setting error
HP2 Home position return uncompleted
Home position return parameter setting
HP3
error
Continuous operation during
CF
communication fault
LDF Load fault warning
Alarm
• The inverter does not trip. An Alarm (LF) signal can also
be output with a parameter setting.
Abbreviation
FN Fan alarm
Refer
Name
to
629
629
630
631
Refer
Name to
page
632
632
633
633
633
633
633
633
634
634
634
634
634
634
634
Refer
Name to
page
635
Fault
• A protective function trips the inverter and outputs a Fault
(ALM) signal.
• The data code is used for checking the fault detail via
communication or with Pr.997 Fault initiation.
Abbreviation Name
Overcurrent trip during
E.OC1
acceleration
Overcurrent trip during constant
E.OC2
speed
Overcurrent trip during
E.OC3
deceleration or stop
Regenerative overvoltage trip
E.OV1
during acceleration
Regenerative overvoltage trip
E.OV2
during constant speed
Regenerative overvoltage trip
E.OV3
during deceleration or stop
Inverter overload trip (electronic
E.THT
thermal relay function)
Motor overload trip (electronic
E.THM
thermal relay function)
E.FIN Heat sink overheat
E.IPF Instantaneous power failure
E.UVT Undervoltage
E.ILF Input phase loss
E.OLT Stall prevention stop
E.SOT Loss of synchronism detection
E. LUP Upper limit fault detection
E. LDN Lower limit fault detection
Brake transistor alarm
E.BE
detection
Output side earth (ground) fault
E.GF
overcurrent
E.LF Output phase loss
External thermal relay
E.OHT
operation
E.PTC PTC thermistor operation
E.OPT Option fault
PROTECTIVE FUNCTIONS
The list of fault displays
Refer
Data
to
code
page
16
635
(H10)
17
636
(H11)
18
636
(H12)
32
637
(H20)
33
637
(H21)
34
637
(H22)
48
638
(H30)
49
638
(H31)
64
638
(H40)
80
638
(H50)
81
639
(H51)
82
639
(H52)
96
639
(H60)
97
639
(H61)
98
640
(H62)
99
640
(H63)
112
640
(H70)
128
640
(H80)
129
640
(H81)
144
640
(H90)
145
641
(H91)
160
641
(HA0)
627
6