Emerson AMS Trex Device Communicator User Manual page 102

Field Communicator application
September 2021
3.18.3
102
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Related information
Wiring diagrams for FOUNDATION fieldbus devices and the Field Communicator
application
Wiring diagrams for FOUNDATION fieldbus devices and
the Field Communicator application
CAUTION
Remove the USB cable from the Trex unit before connecting to a device.
CAUTION
The Trex unit draws approximately 12 mA from the fieldbus segment when it is online.
(The Trex unit draws 0 mA when it is offline.) Ensure the power supply or barrier on the
fieldbus segment has the capacity to provide this additional current when the Trex unit is
online. If a heavily loaded fieldbus segment is drawing near the capacity of the segment's
power supply, connecting the Trex unit may result in loss of communication.
Figure 3-39: Power and connect to a FOUNDATION fieldbus device
To power a FOUNDATION fieldbus device, the Trex unit needs the FOUNDATION fieldbus
Power Plug. When the Trex unit powers a device, it also provides two terminators and a
power conditioner.
WARNING
The Trex unit can power only one FOUNDATION fieldbus device.
A. FOUNDATION fieldbus Power Plug
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