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Section 1
Introduction
Overview
The IMASI23 Analog Input Module is a Harmony rack I/O
module that is part of the Symphony Enterprise Management
and Control System. It has 16 analog input channels that
interface isolated thermocouple, millivolt, RTD, and high level
analog signals to a controller with an analog-to-digital conver-
sion resolution of 24 bits. Each channel has its own ana-
log-to-digital converter and can be independently configured to
handle the desired input type. These analog inputs are used by
the controller to monitor and control a process. The controller
performs the control functions; I/O modules provide the input
and output functions.
NOTE: The IMASI23 module is fully compatible with existing INFI 90
OPEN
Strategic Enterprise Management Systems.
Figure 1-1 shows the Harmony rack I/O architecture. A Har-
mony area controller and the Harmony rack controllers can
use the rack I/O modules for I/O interface.
Intended User
Personnel installing, operating, or maintaining the IMASI23
module should read this instruction before performing any
installation, operation, or maintenance procedures. Installa-
tion requires an engineer or technician with experience han-
dling electronic circuitry. Those working with the analog input
module should have experience working with and know the
precautions to take around AC/DC power. A knowledge of the
Symphony system and electronic principles is also required.
Features
The design of the IMASI23 module allows for flexibility in creat-
ing a process management system.
• The IMASI23 module conditions (filters, converts, and iso-
lates) up to 16 analog input signals.
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