XtraDrive User Manual Appendix B: Special Wiring
B-2
B.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.
- Cable Type
Yaskawa
Drawing Number
Maximum Allowable Length
Reference Input Twisted pair wires JZSP-CKI01 118in (3m)
JZSP-CMP00 SGMAH, SGMPH 787in (20m)
Encoder
Multi-conductor
shielded twisted air
wire
JZSP-CMP02 SGMGH, SGMSH 1969in (50m)
• Trim off the excess portion of the cable to minimize the cable
length.
2. For a ground wire use as large a wire as possible: AWG14 (2.0mm
2
)
or larger.
• At least class-3 ground (100Ω. maximum) 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 (0.0079 to 0.012in. (0.2
to 0.3mm)), handle the cables with care.
4. Use a noise filter to prevent noise interference.
(For details, refer to 5.8.2 Wiring for Noise Control).
• 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 servo amplifier is designed as an industrial device, it
provides no mechanism to prevent noise interference.
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