Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives - Manual (Page 21)

Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014 21
Wire/Cable Types Chapter 1
Cable for Discrete Drive I/O Discrete I/O, such as start and stop commands, can be wired to the drive with a
variety of cabling. We recommend shielded cable to reduce cross-coupled noise
from power cables. Standard individual conductors that meet the general
requirements for type, temperature, gauge, and applicable codes are acceptable if
they are routed away from higher voltage cables to minimize noise coupling.
However, multi-conductor cable can be less expensive to install. Separate control
wires from power wires by at least 0.3 m (1 ft)
Table 2 - Recommended Control Wire for Digital I/O
Analog Signal and Encoder
Cable Always use shielded cable with copper wire. We recommend wire with an
insulation rating of 300V or greater. Separate analog signal wires from power
wires by at least 0.3 m (1 ft). Run encoder cables in a separate conduit. If signal
cables must cross power cables, cross at right angles. Terminate the shield of the
shielded cable as recommended by the manufacturer of the encoder or analog
signal device.
Table 3 - Recommended Signal Wire
Type (1)
(1) The cable choices shown are for 2-channel (A and B) or 3-channel (A,B, and Z) encoders. If high resolution or other types of
feedback devices are used, choose a similar cable with the correct gauge and number of conductor pairs.
Wire Type(s) Description Minimum
Insulation Rating
Unshielded Per US NEC or applicable national or local code – 300V, 60 °C
(140 °F)
Shielded Multi-conductor shielded cable 0.750 mm 2 (18 AWG),
3-conductor, shielded.
Signal Type/
Where Used
Wire
Type(s) Description Minimum
Insulation Rating
Standard analog I/O – 0.750 mm 2 (18 AWG), twisted pair, 100% shield
with drain (1)
(1) If the wires are short and contained within a cabinet that has no sensitive circuits, the use of shielded wire is not always necessary,
but is recommended.
300V,
75…90 °C
(167…194 °F)
Remote pot – 0.750 mm 2 (18 AWG), 3-conductor, shielded
Encoder/Pulse I/O
< 30.5 m (100 ft) Combined 0.196 mm 2 (24 AWG), individually shielded
Encoder/Pulse I/O
30.5…152.4 m
(100…500 ft)
Signal 0.196 mm 2 (24 AWG), individually shielded
Power 0.750 mm 2 (18 AWG)
Combined 0.330 mm 2 or 0.500 mm 2
Encoder/Pulse I/O
152.4…259.1 m
(500…850 ft)
Signal 0.196 mm 2 (24 AWG), individually shielded
Power 0.750 mm
2
(18 AWG)
Combined 0.750 mm
2
(18 AWG), individually shielded pair