Mitsubishi Electric FR-F840-00023 Installation Manuallines page 51

6.1 Reset method of protective function
The inverter can be reset by performing any of the following operations. Note that the internal thermal integrated value of
the electronic thermal relay function and the number of retries are cleared (erased) by resetting the inverter.
Inverter recovers about 1s after reset is cancelled.
Three different methods can be used to reset an inverter.
Using the operation panel, press the STOP/RESET key to reset the inverter.
(This may only be performed when a fault occurs.)
Switch OFF the power once, then switch it ON again after the indicator of the operation
panel turns OFF.
Turn ON the reset signal (RES) for more than 0.1s. (If the RES signal is kept ON,
"Err." appears (flickers) to indicate that the inverter is in a reset status.)
CAUTION
OFF status of the start signal must be confirmed before resetting the inverter fault. Resetting inverter fault with the start
signal ON restarts the motor suddenly. This may cause injury.
6.2 List of alarm display
Operation panel indication Name
HOLD
LOCD
to
Er1 to
Er4
Er8
to
rE1 to
rE4
rE6 to
to
rE8
Err.
OL
oL
TH
PS
to
MT1 to
MT3
For footnotes *1 to *2 refer to next page.
Operation panel lock
Password locked
Parameter write error
Copy operation error
Error
Stall prevention (overcurrent)
Stall prevention (overvoltage)
Electronic thermal relay
function pre-alarm
PU Stop
Maintenance signal output
Data
Operation panel indication Name
code
—
—
—
—
EHR
—
E.OC1
—
E.OC2
—
E.OC3
—
—
E.OV1
E.OV2
—
E.OV3
TROUBLESHOOTING
CP
Parameter copy
Continuous operation during
CF
communication fault
SA
Safety stop
UF
USB host error
*1
Emergency drive in operation
ED
LDF
Load fault warning
*2
Ethernet communication fault
FN
Fan alarm
Overcurrent trip during
acceleration
Overcurrent trip during
constant speed
Overcurrent trip during
deceleration or stop
Regenerative overvoltage trip
during acceleration
Regenerative overvoltage trip
during constant speed
Regenerative overvoltage trip
during deceleration or stop
ON
OFF
Inverter
RES
PC
Data
code
—
—
—
—
—
—
—
—
16
(H10)
17
(H11)
18
(H12)
32
(H20)
33
(H21)
34
(H22)
45