Mitsubishi Electric MELSERVO-J5 MR-J5-G Series, User Manual

Page: 254 / 478

252
6 OPTIONS AND PERIPHERAL EQUIPMENT
6.15 Earth-leakage current breaker
MR-J5W_-_G_
Use an earth-leakage current breaker designed for suppressing harmonics/surges.
Find each term of formula (6.1) from the diagram.
Ign = 0 (not used)
Iga = 0.15 [mA]
Igm = 0.1 [mA]
Insert these values in formula (6.1).
Ig
≥ 10 • {0.1 + 0 + 0.15 + 1 • (0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1)}
Ig ≥ 8.5 [mA]
According to the result of calculation, use an earth-leakage current breaker having the rated sensitivity current (Ig) of 8.5 mA
or more.
Use an earth-leakage current breaker having Ig of 15 mA for the NV-SP/SW/CP/CW/HW series.
2 mm
2
× 5 m
NV
Ig1 Iga
MR-J5W3-222G
Ig2 Igm
M
Ig2 Igm
M
HK-KT23
HK-KT23
Ig2 Igm
M
HK-KT23
2 mm
2
× 5 m
Cable
A-axis servo motor
Cable
Servo amplifier
B-axis servo motor
Cable
C-axis servo motor
5
1000
Ig1 = 20 • = 0.1 [mA]
5
1000
Ig2 = 20 • = 0.1 [mA]