Specifications

51
TROUBLESHOOTING
7.1 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 0.1 s. (If the RES signal is kept ON,
"Err." appears (flickers) to indicate that the inverter is in a reset status.)
7.2 List of alarm display
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.
ON
OFF
SD
RES
Inverter
Operation Panel
Indication
Name
Data
code
Error message
E - - - -
Faults history
—
HOLD
Operation panel lock
—
LOCD
Password locked
—
Er1 to
Er4
Er8
Parameter write error
—
rE1 to
rE4
rE6 to
rE8
Copy operation error
—
Err.
Error
—
Warning
OL
Stall prevention (overcurrent)
—
oL
Stall prevention (overvoltage)
—
RB
*1 *2
Regenerative brake pre-
alarm
—
TH
Electronic thermal relay
function pre-alarm
—
PS
PU Stop
—
MT1 to
MT3
Maintenance signal output
—
to
to
to
to
Warning
CP
*2
Parameter copy
—
SL
Speed limit indication
—
SA
Safety stop
—
UF
USB host error
—
EV
24 V external power supply
operation
—
HP1
Home position return setting
error
—
HP2
Home position return
uncompleted
—
HP3
Home position return
parameter setting error
—
Alarm
FN
Fan alarm
—
FN2
*3
Internal fan alarm
—
Fault
E.OC1
Overcurrent trip during
acceleration
16
(H10)
E.OC2
Overcurrent trip during
constant speed
17
(H11)
E.OC3
Overcurrent trip during
deceleration or stop
18
(H12)
E.OV1
Regenerative overvoltage trip
during acceleration
32
(H20)
E.OV2
Regenerative overvoltage trip
during constant speed
33
(H21)
E.OV3
Regenerative overvoltage trip
during deceleration or stop
34
(H22)
Operation Panel
Indication
Name
Data
code
For footnotes *1 to *3 refer to next page.