Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 327 / 608

Parameter Operation setting at alarm occurrence
FR-E700 SC EC/ENE 6 - 173
6.13.3 Earth (ground) fault detection at start (Pr. 249)
You can choose whether to make earth (ground) fault detection at start valid or invalid. Earth (Ground)
fault detection is executed only right after the start signal is input to the inverter.
Protective function will not activate if an earth (ground) fault occurs during operation.
The above parameter can be set when Pr. 160 "User group read selection" = 0.
Pr. No. Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
249
Earth (ground) fault detection at
start
0
0 Without earth (ground) fault detection
—
1 With earth (ground) fault detection
NOTES As detection is executed at starting, output is delayed for approx. 20 ms every starting.
If an earth (ground) fault is detected with "1" set in Pr. 249, output side earth (ground) fault over-
current (E.GF) is detected and the inverter trips. (Refer to page 7-13.)
If the motor capacity is smaller than the inverter capacity for the FR-E740-120SC or more, earth
(ground) fault detection may not be provided.