Omron E5C-T Series User Manual

6 Parameters
6 - 46
E5@C-T Digital Temperature Controllers User’s Manual (H185)
These parameters set the PID constants for each PID set. If auto-tuning is executed, these parameters
are set automatically.
*.p
PID * Proportional Band
2-PID control must be used.
*.i
PID * Integral Time
*.d
PID * Derivative Time (*: 1 to 8)
P
action:
For the P action, the MV is proportional to the derivative.
I action: For the I action, an output is produced that is proportional to the time integral of the
derivative. An offset normally occurs with the proportional action, so the proportional
action is used in combination with the integral action. As time passes, this offset disap-
pears and the control temperature comes to match the set point.
D
action:
For the D action, an output is produced that is proportional to the time derivative of the
input. Because the proportional action and integral action correct for errors in the con-
trol result, the control system will be slow to respond to sudden changes in temperature.
The derivative action performs a corrective action by increasing the MV in proportion to
the slope of the temperature change.
* The unit is determined by the setting of the Integral/Derivative Time Unit parameter.
The Proportional Band, Integral Time, and Derivative Time parameters are initialized if the
Integral/Derivative Time Unit parameter is changed.
z Related Parameters
AT Execute/Cancel (Adjustment Level): Page 6-27
Integral/Derivative Time Unit (Advanced Function Setting Level): Page 6-86
Function
Setting
Parameter Setting range Unit Default
Proportional
Band
Temperature input 0.1 to 999.9 °C or °F8.0
Analog input %FS 10.0
Integral
Time*
Integral/Derivati
ve Time Unit of
1 s
Standard,
heating/cooling,
position proportional
(closed)
0 to 9,999 Seconds 233
Position proportional
(floating)
1 to 9,999
Integral/Derivati
ve Time Unit of
0.1 s
Standard,
heating/cooling,
position proportional
(closed)
0.0 to 999.9 Seconds 233.0
Position proportional
(floating)
0.1 to 999.9
Derivative
Time*
Integral/Derivative Time Unit of 1 s 0 to 9,999 Seconds 40
Integral/Derivative Time Unit of 0.1 s 0.0 to 999.9 Seconds 40.0
See
See

Omron E5C-T Series Specifications

General

Brand	Omron
Model	E5C-T Series
Category	Temperature Controller
Language	English