
Table 5: Communication bus and supply power terminal blocks, functions, ratings,
requirements, and cables
Terminal block/Port
label
Terminal
labels
Function, electrical
ratings/Requirements
Recommended cable
type
1
TSTAT
TSTAT
RJ-45 8-Position Modular
Connector pr15 VDC
Power for:
• Wireless Commissioning
Converter
• VAV Balancing Tool
• One-to-One Wireless
Receiver
• Network Sensor
24 AWG 4-pair CAT 5 Cable
<30.5 m (100 ft)
HOT
24 VAC Power Supply - Hot
Supplies 20–30 VAC
(Nominal 24 VAC)
24~
COM
24 VAC Power Supply
Common (
0.8 mm to 1.5 mm
(20 to 18 AWG) 2-wire
1
See Table 3 to determine wire size and cable lengths for cables other than the recommended cables.
2
The SA Bus and FC Bus wiring recommendations in this table are for MS/TP Bus communications at 38.4k baud.
Setup and adjustments
Important:
Electrostatic discharge can damage controller components. Use proper
electrostatic discharge precautions during installation, setup, and servicing to avoid damaging
the controller.
Setting the device address
PC Series controllers are master devices on BACnet MS/TP (SA or FC) Buses. PC controllers connect
easily to the non-communicating sensor for zone air controllers on a bus, but before operating you
must set a valid and unique device address for each controller on the bus.
You set PC controller’s device address by setting the positions of the switches on the Device
Address DIP switch block at the top of the controller. Device addresses 4 through 127 are the valid
addresses for these controllers.
The DIP switch block (Figure 9) has eight switches numbered 128, 64, 32, 16, 8, 4, 2, and 1. Switches
64 through 1 are device address switches. Switch 128 must be set to OFF for all hard-wired SA and
FC Bus applications.
PCV1617 and PCV1632 VAV Box Controllers Installation instructions
18