Quick Start Installation Guide
9
WIRING CONNECTIONS AND POWER UP
Summary
The transmitter is designed to operate in a two-wire power/current loop with loop
resistance and power supply voltage within the HART and DE operating ranges
shown in
Figure 7
.
Figure 7
-
STT750
HART/DE Transmitter Operating Ranges
Loop wiring is connected to the Transmitter by simply attaching the positive (+) and
negative (
–) loop wires to the positive (+) and negative (–) terminals on the
Transmitter terminal block in the Electronics Housing shown in
Figure 8
.
Connect the Loop Power wiring shield to earth ground only at the power supply end.
Note
that the Transmitter is not polarity-sensitive.