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13. OPTIONS AND AUXILIARY EQUIPMENT
(2) Selection example
Indicated below is an example of selecting a leakage current breaker under the following conditions:
SM
Servo
amplifier
MR-J2S-60A
Servo motor
HC-MFS73
Ig1 Ig2
Iga
Igm
NV
2mm
2
5m
2mm
2
5m
Use a leakage current breaker generally available.
Find the terms of Equation (13.2) from the diagram:
Ig1
20
1000
5
0.1 [mA]
Ig2
20
1000
5
0.1 [mA]
Ign 0 (not used)
Iga
0.1 [mA]
Igm
0.1 [mA]
Insert these values in Equation (13.2):
Ig
10 {0.1 0 0.1 3 (0.1 0.1)}
8.0 [mA]
According to the result of calculation, use a leakage current breaker having the rated sensitivity
current (Ig) of 8.0[mA] or more. A leakage current breaker having Ig of 15[mA] is used with the NV-
CA/CS/SS series.