Emerson 2400S User Manual

Installation Manual

I/O Wiring – Model 2400S Analog Transmitters

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3.4.1

mA output wiring

The wiring diagrams in this section are examples of proper wiring for the Model 2400S mA output.
The following options are shown:

•

Internal power:

Basic mA output wiring – Figure 3-1

HART/analog single-loop wiring – Figure 3-2

•

External power:

Basic mA output wiring – Figure 3-3

HART/analog single-loop wiring – Figure 3-4

•

HART multidrop wiring, internal or external power – Figure 3-6

Note: If you plan to configure the transmitter to poll an external temperature or pressure device, you
must wire the mA output to support HART communications. You may use either HART/analog
single-loop wiring or HART multidrop wiring.

Figure 3-1

Basic mA output wiring – Internal power

820 Ohm maximum

loop resistance

–

Note: Channel B (terminals 3 and 4) can also
be configured this way.