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Basic Functions
3.3.11 Start-time earth (ground) fault detection selection (Pr. 40)
You can choose whether to make earth (ground) fault detection valid or invalid at
a start. Earth (Ground) fault detection is executed only right after the start signal
is input to the inverter.
If an earth (ground) fault occurs during operation, the protective function is not
activated.
Param
eter
Name
Factory
Setting
Setting
Range
Remarks
40
Start-time earth
(ground) fault detection
selection
00, 1
0: Earth (Ground) fault detection for
protection is not executed.
1: Earth (Ground) fault detection for
protection is executed.
CAUTION
1. If an earth (ground) fault is detected with "1" set in Pr. 40, alarm output " "
is detected and the output is shut off.
2. If the motor capacity is less than 0.1kW, earth (ground) fault protection may
not be provided.
REMARKS
•When an earth (ground) fault is detected with "1" set in Pr. 40, an approximate 20ms delay
occurs at every start.