UI current loop jumpers - Metasys - MS-FAC2611 - Field Device - FAC26 Advanced Application Field Equipment Controller

FAC2611 Advanced Application Field Equipment Controller Installation Guide

Brand
Metasys
Product name
FAC26 Advanced Application Field Equipment Controller
Document type
Installation Guide
Part number
24-10143-187
Document revision
L
Revision date
2019-10-18
Language
English

The UI current loop fail-safe jumpers are on the circuit board under the controller cover near the UI terminals. When a UI is defined (in the system software) as a 4-20 mA Analog Input and the UI’s current loop jumper is in the Disabled (default) position (Figure 1), the 4-20 mA current loop circuit opens whenever power to the controller is interrupted or off.

Figure 1. Current loop jumper positions

Setting the current loop jumper to the Enabled position (Figure 1) connects an internal 100 ohm resistor across the UI terminals, which maintains the 4-20 mA current loop circuit even when power to the controller 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 4-20 mA analog inputs.