Watlow Electric Revision 5 - Manual (Page 6)

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1.0 INTRODUCTION
The ANAFAZE SYSTEM 32 is the key element used to form an innovative
measurement and control system. It combines its power with an IBM PC or
similar computer to deliver an extremely efficient data acquisition and process
control system. The SYSTEM 32 concentrates its power in analog measurement,
independent digital loop control, alarm monitoring, and signal processing. This
frees the computer to perform process control supervision including: graphic
process displays, operator data entry, data printout, data storage, and process
performance analysis.
The flexible ANAFAZE SYSTEM 32 is built upon a series of cost effective plug
in modules to handle a variety of diverse requirements. These plug in modules
make it easy to configure the SYSTEM 32 to specifically fit individual application
needs. Thus a tailored system can be obtained from off the shelf modules.
The SYSTEM 32 is an excellent choice for applications where multiple inputs
such as temperature, flow, speed, pressure, and others need to be measured or
controlled. This is because a mixture of different sensor types can be directly
connected to the SYSTEM 32. It is also well suited for processes with multiple
temperature zones and control methods including cascade, ramp and soak, and
adaptive control. The SYSTEM 32 is especially efficient since each controller
provides independent stand-alone PID control of up to 32 process loops and up to
96 channels of data acquisition.
The result is a powerful distributed process control system with the reliability of
independent loop control and the flexibility of computer supervision.
1.1 SYSTEM FEATURES
1.1.1 ACCURATE MEASUREMENT: Every process requires accurate
data measurement. The SYSTEM 32 assures this with optically-isolated
input modules. Further noise rejection is achieved by an integrating
measurement technique. Input to input isolation is provided with reed relay
switching. This combination enables the SYSTEM 32 to deliver needed
accuracy in difficult process environments.
1.1.2 CONVENIENT INSTALLATION: Substantial savings in wiring
and installation costs can be achieved by locating SYSTEM 32 units
physically near the process. This is because the communication between the
SYSTEM 32 and the computer requires only four wires. A local or remote
system of up to 16 units [512 loops] can be connected on a single serial line
using RS-232, RS-485, or 20ma loop communication -- all optically-
isolated. Larger systems may utilize multiple communication lines.