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3 wiring precautions – Yaskawa Σ-mini Series User Manual

Page 19

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5.3 Wiring Precautions

E - 15

5.3 Wiring Precautions

J

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)

J

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.

J

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.

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