Yaskawa FSP Amplifier - Manual (Page 317)

FSP Amplifier User’s 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 118 in (3 m)
JZSP-CMP00 SGMAH, SGMPH 787 in (20 m)
Encoder
Multi-conductor
shielded twisted air
wire
JZSP-CMP02 SGMGH, SGMSH 1969 in (50 m)
• 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
(2.0 mm 2 ) or larger.
• At least class-3 ground (100 Ω 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 0.012 in. (0.2 to
0.3 mm)), handle the cables with care.
4. Use a noise filter to prevent noise interference.
• 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.