YASKAWA Sigma-7S Series Product Manual page 70

4.1 Wiring and Connecting SERVOPACKs
Important
To ensure safe, stable application of the servo system, observe the following precautions when
wiring.
• Use the cables specified by Yaskawa. Design and arrange the system so that each cable is
as short as possible.
Refer to the following manual for information on the specified cables.
Σ-7-Series Peripheral Device Selection Manual (Manual No.: SIEP S800001 32)
• The signal cable conductors are as thin as 0.2 mm
excessive bending stress or tension.
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• Use a molded-case circuit breaker or fuse to protect the main circuit. The SERVOPACK con-
nects directly to a commercial power supply; it is not isolated through a transformer or other
device. Always use a molded-case circuit breaker or fuse to protect the servo system from
accidents involving different power system voltages or other accidents.
• Install an earth leakage breaker. The SERVOPACK does not have a built-in ground fault protec-
tive circuit. 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 turn the power supply ON and OFF more than necessary.
• Do not use the SERVOPACK for applications that require the power supply to turn ON and
OFF frequently. Such applications will cause elements in the SERVOPACK to deteriorate.
• After you have started actual operation, allow at least one hour between turning the power
supply ON and OFF (as a guideline).
2 2
or 0.3 mm . Do not subject them to