Yaskawa Σ-mini Series - Manual (Page 19)

5.3 Wiring Precautions
E - 15
5.3 Wiring Precautions
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Grounding wire
D In conformance with local electrical codes, ground the SERVOPACK’ s grounding terminal
.
D Be sure to connect the grounding wire of the Servomotor to of the SERVOPACK.
D Never share the grounding cable or grounding rod with welders, power equipment, or other
high-voltage devices. Separate the grounding cable from wiring of high-voltage equip-
ments.
D Make the grounding wire as short as possible. As for cable size, see Par. 3.
D If two or more SERVOPACKS are used, ground them as shown in (a) below.
Avoid methods (b) and (c).
GOOD
(a)
POOR
(b)
POOR
(c)
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Power supply
D Supply 24VDC for power supply.
D Do not connect three-phase power to output terminals U V W. Failure to observe this caution
may damage the SERVOPACK.
D Take care to prevent power line wiring or output wiring from touching or being enclosed
inside the case.
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Noise control
D If the speed signal line is affected by noise, malfunction may result.
• Separate power cables from control cables.
• Make the speed signal line as short as possible and use twisted-pair wires.
D Never use a noise filter (for power input) for motor circuit. If peripheral devices malfunc-
tion due to the noise from SERVOPACK, insert a noise filter (for output, type LF-310KA,
made by Tokin Corp.) between motor and SERVOPACK.