A1-1
IM 34M06H62-02E 3rd Edition : Jul.16
2015-00
A1. Overview
The temperature control and PID module (hereafter called “the module”) is an I/O
module to be mounted on the FA-M3 base unit. The module is provided with
multiple input and output circuits and performs multiple PID control functions.
Figure A1.1 shows a schematic diagram of a system containing the module.
Thermocouple/RTD/Signal Converter
SSR/Relay/SCR
Figure A1.1 Schematic Diagram Showing the Relationship between Sensors, Actuators,
Temperature Control and PID Module and CPU Module
The module is provided with four controller functions and one setup and control
interface for the controller functions for controlling four loops. The controller
functions can be configured to act inter-dependently or independently to support a
wide variety of applications.
Three controller modes are available: single loop, cascade control, and two-input
changeover control. In the single loop mode (default), individual controller
functions operate independently. In the cascade or two-input changeover control
mode, two controller functions are combined to act as a single controller function.
(1) Single Loop (2) Cascade Control (3) Two-input Changeover Control
Figure A1.2 Controller Modes
Controller mode, instrument ranges, set points and other parameter values
required for module operation can be stored in the module to simplify operation
setup at each module startup. A program will then only need to run/stop operation
and switch between set points from the CPU module to achieve operation.
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