Emerson Rosemount 3051HT Quick Start Manual page 9

June 2020
• Power supply voltage can be variable, especially under abnormal
conditions such as when operating on battery backup.
Procedure
1. To power the transmitter, connect the power leads to the terminals
indicated on the terminal block label.
Note
The Rosemount 3051 power terminals are polarity insensitive, 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, terminal polarity should be followed.
When wiring to the screw terminals, the use of crimped legs is
recommended.
2. Ensure full contact with terminal block screw and washer. When
using a direct wiring method, wrap wire clockwise to ensure it is in
place when tightening the terminal block screw. No additional power
is needed.
Note
The use of a pin or a ferrule wire terminal is not recommended as the
connection may be more susceptible to loosening over time or under
vibration.
3. Ensure proper grounding. It is important the instrument cable shield
be:
4. If transient protection is needed, refer to section
wiring
5. Plug and seal unused conduit connections.
6. Reattach the transmitter covers.
Figure 2-5: Wiring
Quick Start Guide
a) Trimmed close and insulated from touching the transmitter
housing.
b) Connected to the next shield if cable is routed through a
junction box.
c) Connected to a good earth ground at the power supply end.
for grounding instructions.
a) The covers must only be capable of being released or
removed with the aid of a tool to comply with applicable
ordinary locations requirements.
Aluminum
Quick Start Guide
Signal ground
Polished 316 SST
9