Ams trex™ Device Communicator

 WARNING
Do not install, remove, or charge the Lithium Ion (Li-Ion) power module in a hazardous
area environment.
Procedure
1. Turn off the Trex unit.
2. Place the Trex unit face down on a level, secure surface.
3. Use a Torx
®
screwdriver to loosen the four screws on the power module. The screws
do not need to be fully removed.
4. Gently lift the power module straight away from the Trex unit. Do not slide the
power module.
Figure 2-10: Trex unit with the power module removed
2.6.8
Maintain the power module
To help maintain the performance and life of the power module, understand and follow
the guidelines below:
•
Recharge the power module frequently, preferably after each use or at night. Limit the
number of full discharges, if possible.
User Guide 
AMS Trex Device Communicator overview
September 2021
User Guide 
23

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•
Avoid frequent use at high temperatures because this can reduce performance.
•
Use a dry location at or near room temperature when storing the power module for an
extended time. Prolonged storage at higher temperatures can reduce performance.
•
Ensure the remaining charge level is at or near mid-capacity when storing for an
extended time. The remaining charge will slowly drain during storage. Periodically
charge the power module to ensure the remaining charge does not drain to low levels.
2.7
Accessories
The Trex unit includes the following accessories:
•
Lead set.
•
A FOUNDATION fieldbus Power Plug to enable the Trex unit to power a FOUNDATION
fieldbus device.
•
A USB cable to connect the Trex unit to PC applications.
•
AC adapter.
•
A handstrap that can be connected to either side of the Trex unit.
2.7.1
Cables and lead sets
The Trex unit comes with a lead set so it can connect to a device. The lead set attaches to
one set of terminals on the top of the Trex unit. The positive lead is marked with a red
band near the banana jacks.
Note
When you remove the lead set from the Trex unit, do not pull on the cable. Grab the plug/
connectors and remove the lead set from the terminals.
The Trex unit may also include the FOUNDATION fieldbus Power Plug, which is used to
power one FOUNDATION fieldbus device. Use the FOUNDATION fieldbus Power Plug with
the Device Communicator Plus communication module. The plug attaches to the FF pwr
terminal and the positive FF terminal on top of the lead set.