Emerson Rosemount 3051 Reference Manual page 57

Reference Manual
00809-0100-4001, Rev KA
Figure 3-15. 4–20 mA HART Wiring
A. Power supply
B. RL ≥ 250Ω
Figure 3-16. 1–5 Vdc Low Power Wiring
A. Voltmeter
B. Power supply
Perform the following procedure to make wiring connections:
1. Remove the housing cover on terminal compartment side. Do not remove the cover in explosive
atmospheres when the circuit is live. Signal wiring supplies all power to the transmitter.
2. For 4–20 mA HART output, connect the positive lead to the terminal marked (+) and the negative
lead to the terminal marked (pwr/comm-). Do not connect powered signal wiring to the test
terminals. Power could damage the test diode.
For 1–5 Vdc HART Low Power output, connect the positive lead to the terminal marked (+ pwr) and
the negative lead to the terminal marked (pwr-). Connect signal lead to V
See "Safety messages" on page 31
Installation
for complete warning information.
Installation
A
B
A
B
/comm+.
out
May 2017
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