Mitsubishi Electric Melservo-J5 MR-J5 Series, User Manual

Page: 225 / 446

6 OPTIONS AND PERIPHERAL EQUIPMENT
6.15 Earth-leakage current breaker
223
6
6.15
Earth-leakage current breaker
Selection method
High-frequency chopper currents controlled by pulse width modulation flow in the AC servo circuits. Leakage currents
containing harmonic contents are larger than those of the motor, which runs on AC power.
Select an earth-leakage current breaker according to the following formula, and ground the servo amplifier, servo motor, etc.
securely.
To minimize leakage currents, make the input and output wires as short as possible, and keep a distance of 30 cm or longer
between the wires and ground.
MR-J5-_G_ or MR-J5-_A_
Rated sensitivity current ≥ 10 • {Ig1 + Ign + Iga + K • (Ig2 + Igm)} [mA] . . . (6.1)
Ign Ig1 Iga Ig2 Igm
M
NV
Cable
Noise filter
Cable
Servo
amplifier