Emerson AMS Trex User Manual

Device Communicator Plus communication moduleFigure 2-5:
A. Power a FOUNDATION fieldbus device. You need to connect the FOUNDATION fieldbus Power Plug
to the FF pwr and the positive FF terminals.
B. Connect to a FOUNDATION fieldbus device that is externally-powered or powered by the Trex unit.
C. Measure current on a 4-20 mA current loop.
D. Power and connect to a HART device. The HART+pwr terminals can measure the current output of a
connected transmitter or control the current input to a connected positioner. The terminals also
have a loop resistor for device communication.
E. Connect to an externally-powered HART device. The HART terminals also have an optional loop
resistor for enabling HART communications on 4-20 current loop and optional current control for
moving a positioner.
CAUTION!
• Before you insert or remove a communication module, ensure the Trex unit is powered
off.
• Ensure sufficient grounding. Ensure the personnel, working surfaces, and packaging are
sufficiently grounded when handling electrostatically sensitive parts.
• Avoid touching the pins on the connectors or components. Discharged energy can affect
the modules.
• When you insert/attach the communication module to the Trex unit, do not over tighten
the screws. Use 0.5Nm maximum torque load.
• Remove the USB cable from the Trex unit before connecting to a device.
AMS Trex Device Communicator overview
User Guide 11

Emerson AMS Trex Specifications

General

Brand	Emerson
Model	AMS Trex
Category	Cell Phone
Language	English