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Mitsubishi Electric MELSERVO-J5 User Manual page 254

Ac servo system
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MR-J5W_-_G_
2
2 mm
× 5 m
NV
Ig1
Use an earth-leakage current breaker designed for suppressing harmonics/surges.
Find each term of formula (6.1) from the diagram.
5
Ig1 = 20 •
= 0.1 [mA]
1000
5
Ig2 = 20 •
= 0.1 [mA]
1000
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.
6 OPTIONS AND PERIPHERAL EQUIPMENT
252
6.15 Earth-leakage current breaker
2
2 mm
× 5 m
Cable
M
Ig2
Igm
Cable
Servo amplifier
M
MR-J5W3-222G
Ig2
Igm
Cable
Iga
M
Ig2
Igm
A-axis servo motor
HK-KT23
B-axis servo motor
HK-KT23
C-axis servo motor
HK-KT23

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