Yaskawa Sigma-5 Series User Manual:: For Use with Large-Capacity Models-Setup. Rotary Motors - Manual (Page 82)

3 Wiring and Connection
3.4.5 Typical Main Circuit Wiring Examples
3-34
3.4.5 Typical Main Circuit Wiring Examples
CAUTION
• Be sure to observe the following precautions when wiring the main circuit’s termi-
nals and connectors on a SERVOPACK or converter.
• Do not turn ON the power to a SERVOPACK or converter until all wiring, including
the wiring to the main circuit terminal connectors, has been completed.
• Remove main circuit connectors from the SERVOPACK and the converter before wir-
ing.
• Insert only one power line per opening in the main circuit terminals.
• Make sure that no part of the core wire comes into contact with (i.e., short-circuits)
adjacent wires.
• Use a molded-case circuit breaker (1QF) or fuse to protect the
main circuit.
The SERVOPACK and the converter connects directly to a com-
mercial power supply; it is not isolated through a transformer or
other device.
Always use a molded-case circuit breaker (1QF) or fuse to pro-
tect the servo system from accidents involving different power
system voltages or other accidents.
• Install a ground fault detector.
The SERVOPACK and the converter does not have a built-in pro-
tective circuit for grounding.
To configure a safer system, install a ground fault detector
against overloads and short-circuiting, or install a ground fault
detector combined with a molded-case circuit breaker.
• Do not frequently turn power ON and OFF.
• Frequently turning power ON and OFF causes elements
inside the SERVOPACK and the converter to deteriorate.
Do not use the servo drive with an application that requires
frequently turning power ON and OFF.
• After the actual operation starts, the allowable interval for turn-
ing power ON and OFF is one hour or longer.