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Sigma II User's Manual
5.8
Special Wiring
This section describes special wiring methods including the one for noise control. In addi-
tion to 5.8.1 Wiring Precautions and 5.8.2 Wiring for Noise Control, refer to other sections
as necessary.
5.8.1
Wiring Precautions
To ensure safe and stable operation, always observe the following wiring precau-
tions:
1. Always use the following cables for reference input and encoder wiring.
Reference
Input
Encoder
•
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
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 0.012in. (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 interfer-
ence, 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
Cable Type
Drawing Number
Twisted–pair wires
JZSP–CKI01
Multiconductor
JZSP–CMP00
shielded twisted–
JZSP–CMP02
pair wire
5-102
Chapter 5: Parameter Settings and Functions
Yaskawa
Maximum
Allowable Length
118in (3m)
SGMAH, SGMPH
SGMGH, SGMSH
2
) or larger.
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