Quick Installation Guide
00825-0400-4101, Rev AA
March 2011
Rosemount 2051
10
S
TEP
4
CONTINUED
...
Signal Wiring Grounding
Do not run signal wiring in conduit or open trays with power wiring, or near heavy electrical
equipment. Grounding terminations are provided on the outside of the electronics housing
and inside the Terminal Compartment. These grounds are used when transient protect
terminal blocks are installed or to fulfill local regulations. See Step 2 below for more
information on how the cable shield should be grounded.
1. Remove the Field Terminals housing cover.
2. Connect the wiring pair and ground as indicated in Figure 7. The cable shield should:
a. Be trimmed close and insulated from touching the transmitter housing.
b. Continuously connect to the termination point.
c.
Be connected to a good earth ground at the power supply end.
Figure 7. Wiring
3. Replace the housing cover. It is recommended that the cover be tightened until there is
no gap between the cover and the housing.
4. Plug and seal unused conduit connections.
Power Supply
The dc power supply should provide power with less than two percent ripple. The
transmitter requires between 9 and 32 Vdc at the terminals to operate and provide
complete functionality.
Power Conditioner
The DP/PA Coupler / Link often includes an integrated power conditioner.
Grounding
Transmitters are electrically isolated to 500 Vac rms. Signal wiring can not be grounded.
Shield Wire Ground
Shield wire usually requires a single grounding point to avoid creating a ground loop. The
ground point is typically at the power supply.
DP
Trim shield and insulate
Connect Shield Back
to the Power Supply
Ground
Insulate Shield
00825-0400-4101.fm Page 10 Friday, March 25, 2011 1:34 PM
