Rockwell Automation B Series

Rockwell Automation Publication 520-UM001I-EN-E - July 2016 37
Installation/Wiring Chapter 1
Maximum Control Wire Recommendations
Do not exceed control wiring length of 30 m (100 ft). Control signal cable length
is highly dependent on electrical environment and installation practices. To
improve noise immunity, the I/O terminal block Common may be connected to
ground terminal/protective earth.
Control I/O Terminal Block
Recommended Signal Wire
Signal Type/
Where Used
Belden Wire Type(s)
(1)
(or equivalent)
(1) Stranded or solid wire.
Description Min. Insulation
Rating
Analog I/O & PTC 8760/9460 0.750 mm
2
(18 AWG), twisted pair,
100% shield with drain
(2)
(2) If the wires are short and contained within a cabinet which has no sensitive circuits, the use of shielded wire may not be necessary,
but is always recommended.
300V,
60 °C (140 °F)
Remote Pot 8770 0.750 mm
2
(18 AWG), 3 conductor, shielded
Encoder/Pulse I/O 9728/9730 0.196 mm
2
(24 AWG), individually shielded pairs
Recommended Control Wire for Digital I/O
Type Wire Type(s) Description Min. Insulation
Rating
Unshielded Per US NEC or applicable
national or local code
– 300V,
60 °C (140 °F)
Shielded Multi-conductor shielded
cable such as Belden 8770
(or equivalent)
0.750 mm
2
(18 AWG), 3 conductor, shielded.
Control I/O Terminal Block Wire Specifications
Frame Maximum Wire Size
(1)
(1) Maximum/minimum sizes that the terminal block will accept – these are not recommendations.
Minimum Wire Size
(1)
Torque
A...E 1.3 mm
2
(16 AWG) 0.13 mm
2
(26 AWG) 0.71...0.86 Nm (6.2...7.6 lb-in.)