Output Wiring - Model 1700/2700 Is Transmitters; Overview; Output Terminals And Output Types - Emerson Micro Motion 2700 Installation Manual

Chapter 5
Output Wiring – Model 1700/2700 IS Transmitters
5.1

Overview

This chapter explains how to wire outputs for Model 1700 or 2700 IS transmitters (transmitters with
the intrinsically safe outputs option board).
Intrinsically safe outputs require external power. "External power" means that the terminals must be
connected to an independent power supply. The output wiring instructions include power setup and
power wiring.
Note: The term "passive" is sometimes used to describe externally powered outputs.
Output wiring requirements depend on whether the transmitter will be installed in a safe area or a
hazardous area. This chapter describes several possible configurations:
• Section 5.3 describes wiring requirements for the outputs if the transmitter will be installed in
a safe area.
• Section 5.4 describes wiring requirements for the outputs if the transmitter will be installed in
a hazardous area.
It is the user's responsibility to verify that the specific installation meets the local and national safety
requirements and electrical codes.
Note: If you don't know what outputs option board is in your transmitter, see Section 1.4. To wire
outputs on Model 1700/2700 transmitters with the analog outputs option board, see Chapter 4. To
wire outputs on Model 2700 transmitters with the configurable input/outputs option board, see
Chapter 6.
5.2

Output terminals and output types

Table 5-1 describes the outputs and communication protocols available for the Model 1700 or 2700 IS
transmitter.
Table 5-1 Terminals and output types
Terminals Model 1700 output type
1 & 2 Milliamp/Bell 202
3 & 4 Frequency
5 & 6 Not used
(1) The Bell 202 signal is superimposed on the mA output.
Transmitter Installation: Model 1700 and 2700 Transmitters
Model 2700 output type
(1)
Milliamp/Bell 202
• Frequency (default)
• Discrete
Milliamp
Communication
(1)
HART
None
None
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