Supply power terminal block - BCPro - Facility Explorer - CH-PCX3733-0 - Field Device - FX-PCX37 Expansion Input/Output Module

PCX3733 Expansion Input/Output Module Installation Guide

Facility Explorer
Product name
FX-PCX37 Expansion Input/Output Module
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Installation Guide
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The 24 VAC supply power terminal block is a gray, removable, 3-terminal plug that fits into a board-mounted jack on the top right of the expansion module.

Wire the 24 VAC supply power wires from the transformer to the HOT and COM terminals on the terminal plug as shown in Figure 1. The middle terminal on the supply power terminal block is not used.

Figure 1. 24 VAC supply power terminal block wiring

Note: The supply power wire colors may be different on transformers from other manufacturers. Refer to the transformer manufacturer’s instructions and the project installation drawings for wiring details.
Important: Connect 24 VAC supply power to the expansion module and all other network devices so that transformer phasing is uniform across the network devices. Powering network devices with uniform 24 VAC supply power phasing reduces noise, interference, and ground loop problems. The expansion module does not require an earth ground connection.