Emerson AMS Trex Device Communicator User Manual page 106

Field Communicator application
September 2021
106
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CAUTION
Remove the USB cable from the Trex unit before connecting to a device.
WARNING
Do not add any external power to the device when the Trex unit is powering the device.
This can blow a fuse inside the Trex unit. The repair/replacement will need to be
completed at an authorized service center. Ensure the device is disconnected from the
loop/segment and no other wires are connected to the device before providing power
from the Trex unit.
Procedure
1. Connect the lead set to the FF terminals on the Trex unit and directly to the
communication terminals on the unpowered device. Ensure no other wires are
connected to the device and there is no power to the device. Do not attach to a
junction box.
2. Connect the FOUNDATION fieldbus Power Plug to the FF pwr terminal and the
positive (red) terminal on the lead set.
Figure 3-42: Connection for powering a FOUNDATION fieldbus device
A. FOUNDATION fieldbus Power Plug
3. Open the Field Communicator application.
4. Tap Fieldbus.
5. Tap Yes when prompted if you want to provide power to the device from the Trex
unit.
The Trex unit provides power and searches for connected devices to display on the
Device List.
6. From the Device List, tap the desired device.
The device menu displays.
7. To stop powering the FOUNDATION fieldbus device, close the Field Communicator
application or remove the lead set.
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