Set Switches; Connect Wiring And Power Up - Emerson Rosemount 3051S Quick Start Manual

August 2016
Note
Do not rotate the housing on each transmitter more than 180° without first performing a
disassembly procedure (see Section 2 of the Rosemount 3051S ERS
more information). Over-rotation may sever the electrical connection between the sensor
module and feature board electronics.

4.0 Set switches

If the Rosemount 3051S ERS sensor is equipped with alarm and security hardware
switches, verify the desired configuration (default: alarm = HI, security = OFF).
1. If the sensor is installed, secure the loop and remove power.
2. Remove the housing cover opposite the field terminals side. Do not remove
the housing cover in explosive environments.
3. Slide the security and alarm switches into the preferred positions by using a
small screwdriver.
4. Reinstall the housing cover so that metal contacts metal to meet
explosion-proof requirements.
Figure 7. Transmitter Switch Configuration
A
A. Security switch
B. Alarm switch

5.0 Connect wiring and power up

A Rosemount 3051S ERS System can be wired in a variety of configurations,
depending on the hardware that was ordered.
5.1 Standard Rosemount 3051S ERS system (Figure 8)
1. Remove the housing cover labeled "Field Terminals" on both Rosemount
3051S ERS sensors.
2. Using the Rosemount 3051S ERS communication cable (if ordered) or an
equivalent 4-wire shielded assembly per the specifications detailed below,
connect the 1, 2, A, and B terminals between the two sensors per
3. Connect the Rosemount 3051S ERS System to the control loop by connecting
the + and - PWR/COMM terminals to the positive and negative leads,
respectively.
4. Plug and seal all unused conduit connections.
B
Quick Start Guide
Reference Manual for
Figure 8.
7