5.8 Special Wiring
5 -105
5.8 Special Wiring
Thissection describesspecial wiring methodsincluding the one for noise control. Inaddition 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 precautions.
1.
Always use the following cables for reference input and encoder wiring.
--
Cable Type
Yaskawa Drawing No.
Maximum
Allowable Length
Reference Input
Twisted-pair wires
JZSP-CKI01
3 m (118 in)
Encoder
Multiconductor
shielded twisted-pair
JZSP-CMP09
20 m (787 in)
shielded twisted-pair
wire
JZSP-CMP19
50 m (1969 in)
S
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 (2.0 mm
2
or thicker).
S
At least class-3 ground (100
W
max.) is recommended.
S
Ground to one point only.
S
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
5.8.2 Wiring for Noise Control
.)
S
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.
S
Since this Servopack is designed as an industrial device, it provides no mechanism to prevent noise
interference.
5
IMPORTANT
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