Power and control current to a positioner
Figure 4-6:
The Trex unit measures both voltage and current from the HART + pwr terminals.
Connect to an externally-powered positioner in-parallel
Figure 4-7:
The Trex unit measures voltage from the HART terminals. Voltage measurements can be taken at various
points to identify voltage drops along the loop.
A.
Current source
Loop Diagnostics application
132
User Guide
Содержание AMS Trex
Страница 1: ...User Guide Rev 3 August 2017 AMS Trex Device Communicator User Guide ...
Страница 8: ...Contents vi User Guide ...
Страница 130: ...Field Communicator application 122 User Guide ...
Страница 186: ...Fieldbus Diagnostics application 178 User Guide ...
Страница 198: ...Technical specifications 190 User Guide ...
Страница 206: ...Glossary 198 User Guide ...