Mitsubishi Electric 800 Series Instruction Manual page 569

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
Err. Error
 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)
TH Electronic thermal relay function pre-
alarm
PS PU stop
CP Parameter copy
SA Safety stop
MT1 to MT3 Maintenance signal output
UF USB host error
CF Continuous operation during
communication fault
ED Emergency drive in operation
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
568
6. PROTECTIVE FUNCTIONS
6.3 The list of fault displays
Name Refer
to
570
570
571
572
Name Refer
to
page
573
573
573
574
574
574
574
574
574
574
575
Name Refer
to
page
575
 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
E.OC1 Overcurrent trip during
acceleration
E.OC2 Overcurrent trip during
constant speed
E.OC3 Overcurrent trip during
deceleration or stop
E.SCF Output short-circuit fault
E.OV1 Regenerative overvoltage trip
during acceleration
E.OV2 Regenerative overvoltage trip
during constant speed
E.OV3 Regenerative overvoltage trip
during deceleration or stop
E.THT Inverter overload trip
(electronic thermal relay
function)
E.THM Motor overload trip (electronic
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
E.BE Internal circuit fault
E.GF Output side earth (ground)
fault overcurrent
E.LF Output phase loss
E.OHT External thermal relay
operation
E.PTC PTC thermistor operation
E.OPT Option fault
E.OP1 Communication option fault
Name Data Refer
code
page
16 575
(H10)
17 576
(H11)
18 576
(H12)
20 576
(H14)
32 576
(H20)
33 577
(H21)
34 577
(H22)
48 577
(H30)
49 577
(H31)
64 578
(H40)
80 578
(H50)
81 578
(H51)
82 578
(H52)
96 579
(H60)
97 579
(H61)
98 579
(H62)
99 579
(H63)
112 583
(H70)
128 579
(H80)
129 580
(H81)
144 580
(H90)
145 580
(H91)
160 580
(HA0)
161 580
(HA1)
to