Reset Method Of Protective Function - Mitsubishi Electric FR-A700 Instruction Manual

Troubleshooting
7.3

Reset method of protective function

Eliminate the cause of the error befor you reset the inverter. Note that the internal thermal in-
tegrated value of the electronic thermal relay function and the number of retries are cleared
(erased) by resetting the inverter. It takes about 1s for reset.
The inverter can be reset by performing any of the following operations:
● Using the operation panel, press the STOP/RESET key to reset the inverter.
(Enabled only when the inverter protective function is activated (major fault). (Refer to
page 7-11 for major fault.))
● Switch power off once, then switch it on again.
● Turn on the reset signal RES for more than 0.1s. (Connect the terminals RES and SD when
using sink logic or terminals RES and PC as shown Fig. 7-3 when using source logic).
(If the RES signal is kept on, "Err." appears (flickers) to indicate that the inverter is in are
set status.)
NOTE For the 02160 or more, you can set Pr. 75 to disable reset operation until the thermal cumu-
lative amount reaches 0 when a thermal trip (THM, THT) or an overcurrent trip (OC1 to OC3)
occurs consecutively twice.
FR-A700 EC
Inverter
RESET
RES
PC
Reset method of protective function
Fig. 7-1:
Resetting the inverter by using the operation
panel
Fig. 7-2:
Resetting the inverter by switching the power
supply off an on
Fig. 7-3:
Resetting the inverter by turning on the RES
signal
I001296E
I001297E
I000249C
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