Troubleshooting; Reset Method Of Protective Function - Mitsubishi Electric FR-E700 Basic Instruction Manual

Reset method of protective function

4 TROUBLESHOOTING

When a fault occurs in the inverter, the inverter trips and the PU display automatically changes to any of the following fault or
alarm indications.
If the fault does not correspond to any of the following faults or if you have any other problem, please contact your sales
representative.
Retention of fault output signal...When the magnetic contactor (MC) provided on the input side of the inverter is opened
Fault or alarm indication ..........When a fault or alarm occurs, the operation panel display automatically switches to the fault
Resetting method ....................When a fault occurs, the inverter output is kept stopped. Unless reset, therefore, the inverter
When any fault occurs, take the appropriate corrective action, then reset the inverter, and resume operation.
Not doing so may lead to the inverter fault and damage.
Inverter fault or alarm indications are roughly divided as below.
(1) Error message
A message regarding operational fault and setting fault by the operation panel and parameter unit (FR-PU04 /FR-PU07)
is displayed. The inverter does not trip.
(2) Warnings
The inverter does not trip even when a warning is displayed. However, failure to take appropriate measures will lead to a
fault.
(3) Alarm
The inverter does not trip. You can also output an alarm signal by making parameter setting.
(4) Fault
When a fault occurs, the inverter trips and a fault signal is output.
4.1 Reset method of protective function
(1) Resetting the inverter
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.
Recover about 1s after reset is cancelled.
Operation 1: ...... Using the operation panel, press
(This may only be performed when a fault occurs (Refer to page 101 for
fault.))
Operation 2: ....... Switch OFF the power once, then switch it ON again after the
indicator of the operation panel turns OFF.
Operation 3: . ..... 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.)
96
when a fault occurs, the inverter's control power will be lost and the fault output will not be
held.
or alarm indication.
cannot restart. (Refer to page 96)
to reset the inverter.
ON
OFF
Inverter
RES
SD