Power Supply Line Protection - YASKAWA SGM Series User Manual

Application

5.7.2 Power Supply Line Protection

5
5.7.2 Power Supply Line Protection
D Connect the noise filter ground wire directly to the junction box or the ground plate.
Noise
filter
Thick
Shielded
and short
ground wire
Incorrect
Figure 5.7
D When grounding a noise filter inside a unit, connect the noise filter ground wire and the
ground wires for other devices inside the unit to the ground plate of the unit first, and then
ground these wires.
Figure 5.8
The SERVOPACK is connected directly to a commercial power supply (200 V). To protect the
power supply line from the ground fault or a contact, and to protect the system from fire, always
use an appropriate molded-case circuit breaker (MCCB) or fuse for each SERVOPACK (see
table 5.4). A fast-operating fuse cannot be used because the SERVOPACK power supply is a ca-
pacitor input type, and a fast-operating fuses may blow out when power is turned ON.
Molded-case circuit breaker
Noise
filter
Correct
Noise
filter
Ground
5 -16