IDEC MICROSmart FC6A Series Ladder Programming Manual

19: PID C ONTROL I NSTRUCTION
19-12 FC6A S ERIES MICROS MART L ADDER P ROGRAMMING M ANUAL FC9Y-B1726
■Control tab
This tab configures the control parameters for the PIDA instruction.
1. Control Mode (S1+6)
Select PID (PID Control), P (Proportional Control), PI (PI Control) or PD (PD Control) according to the characteristics
of the target application.
For details about each control, see "PID Control" on page 19-23.
2. Control Action (S3+0)
• Select the control action from Direct Control Action or Reverse Control Action.
• Direct control action operates to increase the output manipulated variable when the process variable is higher than the set point.
Cooling equipment uses this operation. Reverse control action operates to increase the output manipulated variable when the process
variable is lower than the set point. Heating furnaces uses this operation. (S3+0) is read-only.
3. Set Point (S1+7)
The set point can be set between the minimum value and the maximum value of the process variable. The setting unit for the
set point is as follows.
When Analog Input thermocouple input or resistance thermometer input is set for the process variable, it can be set in units of
0.1°C/°F.
When Data Register or Analog Input voltage input, current input, thermistor, or resistance measurement is set for the
process variable, it can be set in units of 1.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Process variable
Direct control action
Proportional Band
Output manipulated
variable
Output manipulated
variable
0%
100%
Process variable
Reverse control action
Proportional Band
Set Point Set Point
0%
100%

IDEC MICROSmart FC6A Series Specifications

General

Brand	IDEC
Model	MICROSmart FC6A Series
Category	Computer Hardware
Language	English