IDEC MicroSmart Pentra - Manual (Page 136)

A PPLICATION E XAMPLES
FC5A MicroSmart PID Module User’s Manual FC9Y-B1283 7-15
Application Example 3
This application example demonstrates the heating/cooling control for a system using an electric furnace. The
set point (SP) of CH0 control is 200.0°C.
• PID control is performed based on the process variable (PV) of CH0 control. The heating output and cooling
output is turned on or off in accordance with heating output manipulated variable (MV) and cooling output
manipulated variable (MV).
• PID parameters (proportional band/proportional gain, integral time, derivative time, and ARW) are
automatically calculated using auto-tuning (AT).
• If the process variable (PV) of CH0 control becomes out of the range between 194.5°C and 205.5°C, the
upper/lower limits alarm output (Q0) is turned on and the control is disabled.
System Configuration and Wiring
Wiring Example of the FC5A-F2M2 [Non-contact voltage output (for SSR drive)/current output type]
3-phase
Power Supply
Cooling
Equipment
Electric
Furnace
Thermocouple
+
-
SSR
SSR
+
-
+
-
Power
Supply
PID Module (FC5A-F2M2)
IN1
OUT0
OUT1
IN0
Channel
Terminal
No.
２４V DC
Terminal
No.
Channel