Commissioning On The Bench With Hart; Setting The Loop To Manual - Emerson Rosemount 3051S Series Reference Manual

Rosemount 3051S Series
COMMISSIONING ON
THE BENCH WITH HART
Setting the Loop to
Manual
3-2
Commissioning consists of testing the transmitter and verifying transmitter
configuration data. 3051S transmitters can be commissioned either before or
after installation. Commissioning the transmitter on the bench before
installation using a 375 Field Communicator or AMS ensures that all
transmitter components are in working order.
To commission on the bench, required equipment includes a power supply, a
milliamp meter, and a Field Communicator or AMS. Wire equipment as shown
in Figure 3-1 and Figure 3-2. Verify transmitter terminal voltage is between
10.5 - 42.4 Vdc. To ensure successful communication, a resistance of at least
250 ohms must be present between the Field Communicator loop connection
and the power supply. Connect the Field Communicator leads to the terminals
labeled "COMM" on the terminal block. (Connecting across the "TEST"
terminals will prevent successful communication.)
Set all transmitter hardware adjustments during commissioning to avoid
exposing the transmitter electronics to the plant environment after installation.
Refer to "Configure Security and Alarm" on page 2-13.
When using a Field Communicator, any configuration changes made must be
sent to the transmitter by using the "Send" key (F2). AMS configuration
changes are implemented when the "Apply" button is clicked.
Whenever sending or requesting data that would disrupt the loop or change
the output of the transmitter, set the process application loop to manual. The
Field Communicator or AMS will prompt you to set the loop to manual when
necessary. Acknowledging this prompt does not set the loop to manual. The
prompt is only a reminder; set the loop to manual as a separate operation.
Reference Manual
00809-0100-4801, Rev FA
October 2010