Input and Output Wiring
Recommended maximum wire size
Table
Gage Number
14
see Parts List
18
mm2
2.081
0.823
0.823
Description
power and relays
inputs*
isolated outputs
* Automatic compensation for input lead resistance is available. See Section 10 for details.
Cables for locations without interference
For steel (metal) conduit or open wiring away from any sources of interference, use recommended Honeywell cables listed in the parts list in Section 11.
Shielded wiring for locations with interference
In applications where plastic conduit or open wire trays are used, shielded
Avoiding interference
Instrument wiring is considered Level 1, per section 6.3 of IEEE STD. 518 for plant facilities layout and instrumentation application. Level 1 wiring must not be run close to higher level signals such as power lines or drive signals for phase fired SCR systems, etc. Unprotected input wiring in high electrical noise environments is subject to electromagnetic, electrostatic, and radio frequency interference pickup of sufficient magnitude to overload input filters. The best instrument performance is obtained by keeping the interfering signals out of the instruments altogether by using proper wiring practices.
References
Refer to the following when wiring the unit.
∙IEEE STD. 518, Guide for the Installation of Electrical Equipment to Minimize Electrical Noise Inputs to Controllers from External Sources.
∙Appropriate wiring diagram supplied with cells.
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