Yaskawa Large Capacity Sigma II Series - Manual (Page 175)

4.8 Special Wiring
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4.8 Special Wiring
This section describes special wiring methods including the one for noise control. In addition to
4.8.1 Wiring Precautions and 4.8.2 Wiring for Noise Control, refer to other sections as neces-
sary.
4.8.1 Wiring Precautions
To ensure safe and stable operation, always observe the following wiring precautions.
1. Always use the following cables for reference input and encoder wiring.
• Trim off the excess portion of the cable to minimize the cable length.
2. For a ground wire, use as thick a cable as possible (2 mm 2 or thicker).
• Ground resistance of 100 Ω max. is recommended.
• Ground to one point only.
• If the motor is insulated from the machine, ground the motor directly.
3. Do not bend or apply tension to cables.
The conductor of a signal cable is very thin (0.2 to 0.3 mm (0.0079 to 0.012 in)), so handle the
cables with care.
4. Use a noise filter to prevent noise interference. (For details, refer to 4.8.2 Wiring for Noise Con-
trol.)
• If the equipment is to be used near private houses or may receive noise interference, install a
noise filter on the input side of the power supply line.
• Since this SERVOPACK is designed as an industrial device, it provides no mechanism to pre-
vent noise interference.
− Cable Type Yaskawa Drawing
No.
Maximum Allow-
able Length
Reference Input Twisted-pair wires JZSP-CKI01 3 m (118 in)
Encoder Multiconductor
shielded twisted-pair
wire JZSP-CMP09 20 m (787 in)
JZSP-CMP19 50 m (1969 in)
IMPORTANT