Commissioning; Setting The Loop To Manual - Emerson Rosemount 3051 Reference Manual

Section 3: Configuration
November 2012
Explosions could result in death or serious injury:
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Please review
the approvals section of the 3051 reference manual for any restrictions associated with a
safe installation.
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Process leaks may cause harm or result in death.
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Electrical shock can result in death or serious injury.
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3.3

Commissioning

Commissioning consists of testing the transmitter and verifying transmitter configuration data.
The 3051 transmitters can be commissioned either before or after installation. Commissioning
the transmitter on the bench before installation using a Field Communicator or AMS Device
Manager 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 Device Manager. Wire equipment as shown in
Figure
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.
Set all transmitter hardware adjustments during commissioning to avoid exposing the
transmitter electronics to the plant environment after installation.
When using a Field Communicator, any configuration changes made must be sent to the
transmitter by using the Send key. AMS Device Manager configuration changes are
implemented when the Apply button is clicked.
3.3.1

Setting the loop to manual

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 Device
Manager 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.
40
Before connecting a Field Communicator in an explosive atmosphere, ensure the
instruments in the loop are installed in accordance with intrinsically safe or
non-incendive field wiring practices.
In an explosion-proof/flameproof installation, do not remove the transmitter covers
when power is applied to the unit.
Install and tighten process connectors before applying pressure.
Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock.
3-2. To ensure successful communication, a resistance of at least 250 ohms must be
Reference Manual
00809-0100-4001, Rev JA
Figure 3-1 and
Configuration