Overview; Installation And Commissioning; Rosemount 333 Hart Tri-Loop Configuration - Emerson Rosemount 3051S Series Reference Manual

Rosemount 3051S Series
ROSEMOUNT 333
HART TRI-LOOP
CONFIGURATION

Overview

Installation and
Commissioning
Figure 7-19. Tri-Loop Wiring
Diagram
7-24
The Rosemount 333 HART Tri-Loop can be used in conjunction with the
Rosemount 3051S with Advanced HART Diagnostics to acquire up to two
more variables via 4-20mA analog signals. The additional two outputs are
selected by the user and can include: Pressure, Temperature, Scaled
Variable, Standard Deviation, or Mean.
Below are the four major steps to commission the 3051S and Tri-Loop.
Further detail on these steps can be found in the Tri-Loop Instruction manual.
1. Check the 3051S Variable assignments and remap as necessary to
assign the two variables intended to be the Tri-Loop output for the
Secondary (Second) and the Tertiary (Third) variables. Take note of the
Secondary and Tertiary variable information including variable, variable
name, and variable units as it will be necessary to duplicate this exactly
in the Tri-Loop for proper operation.
2. Connect the 3051S to the 333 Tri-Loop. The 3051S 4-20mA output
connects to the 333 Burst Input. See Figure 7-19.
3051S
Terminal
Block
3. Configure the Tri-Loop. The Channel configuration must be identical to
the variables mapped in the 3051S. Note: The Tri Loop default address
is 1. The HART host must be configured to Poll for the 333 in order to
find the Tri-Loop.
4. Enable Burst mode in the 3051S. The Burst Mode must be ON and the
Burst Option must be set to Process Vars/Crnt.
NON-HAZARDOUS AREA
I.S. Barrier (See Transmitter Manual
for I.S. Barrier Requirements)
250 Ω
Reference Manual
00809-0100-4801, Rev CB
January 2007
Power
Supply
Primary
Variable
Channel 1
Variable
Channel 2
Variable
Control Inputs