Mitsubishi FR-A800

The list of fault displays
PROTECTIVE FUNCTIONS
643
6
6.4 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.
Warning
• The inverter does not trip even when a warning is
displayed. However, failure to take appropriate measures
will lead to a fault.
Alarm
• The inverter does not trip. An Alarm (LF) signal can also
be output with a parameter setting.
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.
Operation
panel
indication
Name
Refer
to
Faults history 641
Operation panel lock 645
Password locked 645
to
Parameter write error 645
to
Copy operation error 646
Error 647
Operation
panel
indication
Name
Refer
to
page
Stall prevention (overcurrent) 648
Stall prevention (overvoltage) 648
Regenerative brake pre-alarm 649
Electronic thermal relay function pre-alarm 649
PU stop 649
Speed limit indication 649
Parameter copy 649
Safety stop 650
to
Maintenance signal output 650
USB host error 650
Home position return setting error 650
Home position return uncompleted 650
Home position return parameter setting
error
650
24 V external power supply operation 650
to
Operation
panel
indication
Name
Refer
to
page
Fan alarm 651
Internal fan alarm 651
Operation
panel
indication
Name
Data
code
Refer
to
page
Overcurrent trip during
acceleration
16
(H10)
651
Overcurrent trip during constant
speed
17
(H11)
652
Overcurrent trip during
deceleration or stop
18
(H12)
652
Regenerative overvoltage trip
during acceleration
32
(H20)
653
Regenerative overvoltage trip
during constant speed
33
(H21)
653
Regenerative overvoltage trip
during deceleration or stop
34
(H22)
653
Inverter overload trip (electronic
thermal relay function)
48
(H30)
654
Motor overload trip (electronic
thermal relay function)
49
(H31)
654
Heatsink overheat
64
(H40)
654
Instantaneous power failure
80
(H50)
654
Undervoltage
81
(H51)
655
Input phase loss
82
(H52)
655
Stall prevention stop
96
(H60)
655
Loss of synchronism detection
97
(H61)
656
Brake transistor alarm
detection
112
(H70)
656
Output side earth (ground) fault
overcurrent
128
(H80)
656
Output phase loss
129
(H81)
656
External thermal relay
operation
144
(H90)
656
PTC thermistor operation
145
(H91)
657