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Installation Manual 13
I/O Wiring – Model 2400S Analog Transmitters
Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin
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.