Emerson 2200S User Manual

140

Micro Motion

Model 2200S Transmitters

Using the 375 Field Communicator

E.3

Connecting to a transmitter

You can connect the Communicator to the transmitter’s HART clips or to a point on a HART network.

Note: The HART clips on the face of the transmitter are connected to the transmitter’s mA/HART
terminals. You may connect directly to the mA/HART terminals if you have removed the user interface
module.

Note: If you are using the mA/HART terminals to report a process variable and also for HART
communications, see the transmitter installation manual for wiring diagrams.

E.3.1

Connecting to HART clips

To connect the Communicator to the transmitter’s HART clips:

1. Remove the user interface cover (see Section C.3).

2. Connect the Communicator leads to the HART clips on the face of the transmitter. The

connection is polarity-insensitive. See Figure E-1.

3. The Communicator must be connected across a resistance of 250–600

Ω. Add resistance to

the connection. See Figure E-1.

Figure E-1

Connecting to HART clips

Communicator

250–600

Ω resistance

HART clips

Connection is

polarity-insensitive