UI current loop jumpers - BCPro - Facility Explorer - CH-PCX2723-0 - Field Device - FX-PCX27 Expansion Input/Output Module

PCX2723 Expansion Input/Output Module Installation Guide

Facility Explorer
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FX-PCX27 Expansion Input/Output Module
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Installation Guide
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The UI current loop jumpers are on the circuit board under the expansion module cover near the UI terminals. When a UI is defined (in the system software) as a 4-20 mA Analog Input, set the UI's current loop jumper to the Enabled position (Figure 1).

Figure 1. Current loop jumper positions

Setting the current loop jumper to the Enabled position connects an internal 100 ohm resistor across the UI terminals, which maintains the 4-20 mA current loop circuit even when power to the expansion module is interrupted or off.

Important: Current Loop jumpers must be in the Disabled (default) position for all UIs that are not set up to operate as 4 to 20 mA analog inputs.
Important: A current loop jumper must be in the Enabled position to maintain a closed 4-20 mA current loop.
Table 1. UI Inputs and Jumper Labels
Universal Input Label Jumper Label on Circuit Board Label
IN1 J20
IN2 J21
IN3 J22
IN4 J24
IN5 J25
IN6 J26
IN7 J27
IN8 J28