I/O Wiring - Model 2400S Analog Transmitters; Overview; Moisture Protection; I/O Options - Emerson Micro Motion 2400S Installation Manual

Chapter 3
I/O Wiring – Model 2400S Analog Transmitters
3.1

Overview

This chapter describes how to wire I/O for Model 2400S Analog transmitters.
Note: To wire I/O for Model 2400S PROFIBUS-DP and DeviceNet transmitters, see Chapter 4.
It is the user's responsibility to verify that the specific installation meets the local and national safety
requirements and electrical codes.
3.2

Moisture protection

When rotating or wiring the transmitter, guard against condensation or excessive moisture inside the
transmitter housing. Be sure that the conduit openings are completely sealed after all installation and
wiring procedures have been performed.
Improperly sealed housings can expose electronics to moisture, which can cause measurement error
or flowmeter failure. Install the meter so that the conduit openings do not point upward, and install drip
legs in conduit or cable. Inspect and grease all gaskets and O-rings. Fully close and tighten all housing
covers and conduit openings.
3.3

I/O options

Table 3-1 lists the options for the transmitter's two I/O channels. Before wiring Channel B, ensure
that you know how it will be configured. For information on configuring Channel B for function and
power, see the manual entitled Micro Motion
Configuration and Use Manual.
Table 3-1 Terminal configuration options
Channel Terminals
A 1 & 2
B 3 & 4
(1) Factory default.
Installation Manual
®
Model 2400S Transmitters with Analog Outputs:
Function
mA
(1)
Frequency
Discrete output
Discrete input
Power
(1)
Internal or external
(1)
Internal or external
Internal or external
Internal or external
Comm
HART/Bell 202
None
None
None
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