Engineering Documentation

Chapter 3 – Field Panels
PXC Compact Series Controller
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Wire Type Requirements
NOTE:
UL-recognized wire (labeled with a backwards “RU”) is not field-installable. Use only
UL-listed wire.
For analog inputs, termination for shield is provided, if required. Termination for shield
is not provided for digital inputs. For more information, see the wiring diagrams.
PXC Compact Series Wire Type Requirements.
Circuit Type Class Wire Type Maximum Distance
1)
Conduit Sharing
2)
AC Line Power (120V or
greater)
1 No. 12 to No. 14 AWG THHN See NEC
3)
Check local codes
AC Low Voltage Power 2 No. 12 to No. 18 AWG THHN See NEC
3)
Check local codes
Universal Input/Output 2 No.18 to No.22 AWG, TP
4)
or TSP
5)
CM
(FT4) or CMP (FT6)
4)
750 ft (230 m) Check local codes
Universal Input/Output
on SCS (Basic Link)
2 24 AWG UTP
6)
, solid 295 ft (90 m) Check local codes
Universal Input/Output
on SCS (Patch Cables)
2 24 AWG UTP
6)
, stranded 33 ft (10 m) Check local codes
Dedicated Digital Input 2 No.14 to No.22 AWG.
TP not required
5)
; check job
specifications and local codes.
750 ft (230 m) Check local codes
Digital Output 1, 2 No.14 to No.22 AWG.
TP not required; check job
specifications and local codes.
Check local codes Check local codes
TX-I/O Island Bus Cable See Wire Type Requirements in the section, TX-I/O Product Range [
➙
88].
1)
Wire length affects point intercept entry. Adjust intercept accordingly.
2)
Conduit sharing rules: No Class 2 point wiring can share conduit with any Class 1 wiring except where local codes permit. (Both
Class 1 and Class 2 wiring can be run in the field panel providing the Class 2 wire is UL listed 300V 75°C (167°F) or higher, or the
Class 2 wire is NEC type CM (FT4) (75°C or higher) or CMP (FT6) (75°C or higher). NEC type CL2 and CL2P is not acceptable
unless UL listed and marked 300V 75°C (167°F) or higher.
3)
National Electric Code.
4)
Twisted pair, non-jacketed, UL listed 75°C (167°F) and 300V cable can be used in place of CM (FT4) or CMP (FT6) (both must be
rated 75°C or higher) cable when contained in conduit per local codes. See the Field Purchasing Guide for wire.
5)
Twisted Shielded Pair TSP is not required for general installation, does not affect PXC Compact specifications, and may be
substituted where otherwise specified. TSP should be used in areas of high electrical noise (for example when in proximity to VFDs
and 100 kVa or larger motors). Where used, connect the shield drain wire to the grounding system inside enclosure.
6)
Cable must be part of a Structured Cabling System (SCS).