Mitsubishi Electric FR-A820-00046 Instruction Manual page 894

The list of fault displays
Alarm
The inverter does not trip. An Alarm (LF) signal can also be output with a parameter setting.
Operation panel indication
Tab. 6-6:
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
Tab. 6-7:
6 - 6
Name
FN Fan alarm
FN2 Internal fan alarm
Alarm
Name
E.OC1 Overcurrent trip during acceleration
E.OC2 Overcurrent trip during constant speed
E.OC3 Overcurrent trip during deceleration or stop
Regenerative overvoltage trip during
E.OV1
acceleration
Regenerative overvoltage trip during constant
E.OV2
speed
Regenerative overvoltage trip during
E.OV3
deceleration or stop
Inverter overload trip (electronic thermal relay
E.THT
function)
Motor overload trip (electronic thermal relay
E.THM
function)
E.FIN Heatsink 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.BE Brake transistor alarm detection
E.GF Output side earth (ground) fault overcurrent
E.LF Output phase loss
E.OHT External thermal relay operation
Fault (1)
Protective functions
Refer to
Data code
page
⎯
6-17
⎯
6-17
Refer to
Data code
page
16
6-18
(H10)
17
6-19
(H11)
18
6-20
(H12)
32
6-20
(H20)
33
6-21
(H21)
34
6-21
(H22)
48
6-22
(H30)
49
6-22
(H31)
64
6-22
(H40)
80
6-23
(H50)
81
6-23
(H51)
82
6-23
(H52)
96
6-24
(H60)
97
6-24
(H61)
112
6-25
(H70)
128
6-25
(H80)
129
6-25
(H81)
144
6-25
(H90)