Wire, Ground, And Power Up - Emerson Rosemount 3051CF Series Quick Start Manual

October 2019
6

Wire, ground, and power up

Use copper wire of sufficient size to ensure that the voltage across the
transmitter power terminals does not drop below 9 Vdc. Power supply
voltage can be variable, especially under abnormal conditions, such as when
operating on battery backup. Emerson recommends a minimum of 12 Vdc
under normal operating conditions and shielded twisted pair Type A cable.
Procedure
1. To power the transmitter, connect the power leads to the terminals
indicated on the terminal block label.
Figure 6-1: Wiring Terminals
Note
The Rosemount
which means the electrical polarity of the power leads does not
matter when connecting to the power terminals. If polarity sensitive
devices are connected to the segment, follow terminal polarity.
Quick Start Guide
A
E
A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal (do not ground cable shield at the
transmitter)
D. Insulate shield
E. Connect shield back to the power supply ground
™
3051 power terminals are polarity insensitive,
B
DP
A
D
Quick Start Guide
C
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