Earth (Ground) Fault Detection At Start - Mitsubishi Electric 800 Series Instruction Manual (Function

12.3

Earth (ground) fault detection at start

Select whether to make earth (ground) fault detection at start. When enabled, earth (ground) fault detection is performed
immediately after a start signal input to the inverter.
Pr.
249 Earth (ground) fault detection at
H101 start
*1 Gr.1 and Gr.2 are the parameter initial value groups. (Refer to
• If a ground fault is detected at start while Pr.249 = "1", the output-side earth (ground) fault overcurrent (E.GF) is displayed
and the outputs are shut off.
• When the Pr.72 PWM frequency selection setting is high, enable the ground fault detection at start.
NOTE
• Because the detection is performed at start, output is delayed for approx. 20 ms every start.
• Use Pr.249 to enable/disable ground fault detection at operation start.
Initial value
Name
Gr.1
0
*1
Setting range
Gr.2
Earth (ground) fault detection at start
0
disabled
1
Earth (ground) fault detection at start
1
enabled
page 54).
12.3 Earth (ground) fault detection at start
Description
12. (H) Protective Function Parameters
11
12
13
14
15
16
17
18
19
20
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