Technical specifications - BCPro - Facility Explorer - CH-PCX3733-0 - Field Device - FX-PCX37 Expansion Input/Output Module

PCX3733 Expansion Input/Output Module Installation Guide

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FX-PCX37 Expansion Input/Output Module
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Installation Guide
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Table 1. Technical specifications

Product Code Number

CH-PCX3733-0 Input/Output Expansion Module

Power Requirement

24 VAC (nominal, 20 VAC minimum/30 VAC maximum), 50/60 Hz, power supply Class 2 (North America), Safety Extra-Low Voltage (SELV) (Europe)

Power Consumption

14 VA maximum

Ambient Conditions

Operating: 0°C to 50°C (32°F to 122°F); 10% to 90% RH noncondensing

Storage: -40°C to 80°C (-40°F to 176°F); 5% to 95% RH noncondensing


DIP switch set; valid expansion module device addresses 4–127 (Device addresses 0–3 and 128–255 are reserved and not valid expansion module addresses.)

Communications Bus

BACnet MS/TP, RS-485:

3-wire FC bus between the supervisory controller and expansion modules (for MS/TP bus communications at 38,400 baud)

4-wire SA bus between expansion module, network sensors and other sensor/actuator devices, includes a lead to source 15 VDC supply power (from controller or expansion module) to bus devices (for MS/TP bus communications at 38,400 baud)


RX631 Renesas® 32-bit microcontroller


4 MB external serial flash memory and 768 KB internal flash and 128 KB internal RAM

Input and Output Capabilities

8 - Binary Inputs: Defined as Dry Contact Maintained or Pulse Counter/Accumulator Mode

8 - Binary Outputs: Defined as 24 VAC Triac (external source power only)


Input/Output: Fixed Screw Terminal Blocks

SA/FC Bus and Supply Power: 4-Wire and 3-Wire Pluggable Screw Terminal Blocks

SA/FC Bus Port: RJ-12 6-Pin Modular Jacks )


Horizontal on single 35 mm DIN rail mount (preferred), or screw mount on flat surface with three integral mounting clips on expansion module


Enclosure material: ABS and polycarbonate UL94 5VB; self-extinguishing, plenum-rated

Protection Class: IP20 (IEC529)

Dimensions (Height x Width x Depth)

150 mm x 164 mm x 53 mm (5-7/8 in. x 6-1/2 in. x 2-1/8 in.) including terminals and mounting clips

Note: Mounting space requires an additional 50 mm (2 in.) space on top, bottom and front face of the expansion module for easy cover removal, ventilation and wire terminations.


0.5 kg (1.1 lb)


United States: UL Listed, File E107041, CCN PAZX, UL 916, Energy Management Equipment

FCC Compliant to CFR47, Part 15, Subpart B, Class A


Canada: UL Listed, File E107041, CCN PAZX7 CAN/CSA C22.2 No. 205, Signal Equipment

Industry Canada Compliant, ICES-003

Europe: Johnson Controls declares that this product is in compliance with the essential requirements and other relevant provisions of the EMC Directive.


Australia and New Zealand: RCM Mark, Australia/NZ Emissions Compliant


BACnet International: BACnet Testing Laboratories (BTL) Protocol Revision 18 Listed and Certified BACnet Smart Actuator (B-SA)

The performance specifications are nominal and conform to acceptable industry standard. For application at conditions beyond these specifications, consult the local Johnson Controls® office. Johnson Controls shall not be liable for damages resulting from misapplication or misuse of its products.