Communication bus and supply power terminal blocks, ratings, and requirements - BCPro - Part No. 24-10143-01663 - Field Device - PCV: Programmable VAV Box Controller

CH-PCV1930 VAV Controller Installation Instructions

Brand
BCPro
Product name
PCV: Programmable VAV Box Controller
Document type
Installation Guide
Document number
Part No. 24-10143-01663
Document revision
B
Revision date
2019-03-22
Language
English
Table 1. Communication bus and supply power terminal blocks, functions, ratings, requirements, and cables

Terminal block/Port label

Terminal labels

Function, electrical ratings/Requirements

Recommended cable type1

SA BUS

+

-

SA Bus Communications

0.6 mm (22 AWG) stranded, 4-wire (2 twisted-pairs), shielded cable recommended

Note: The + and - wires are one twisted pair, and the COM and SA PWR wires are the second twisted pair.

COM

SA Bus Signal Reference and 15 VDC Common

SA PWR

15 VDC Supply Power for Devices on the SA Bus

   
  • DIS1710 Local Controller Display
  • VAV Balancing Tool

24 AWG 3-pair CAT 3 Cable <30.5 m (100 ft)

24~

HOT

24 VAC Power Supply - Hot

Supplies 20–30 VAC (Nominal 24 VAC)

0.8 mm to 1.0 mm

(20 to 18 AWG) 2-wire

COM

24 VAC Power Supply Common

The terminal is isolated from the FC bus common.

1 To determine wire size and cable lengths for cables other than the recommended cables, see Table 1.
2 The SA bus wiring recommendations are for MS/TP Bus communications at 38.4k baud. For more information, refer to the MS/TP Communications Bus for the BCPro™ System Technical Bulletin 912011908)..