Pid Controller (Pid) - ABB i-bus KNX ABA/S 1.2.1 Product Manual

®
ABB i-bus KNX
Parameters
7.10.33

PID controller (PID)

Description
The controller calculates the output value from the difference between the Setpoint and the Actual Value.
The control parameters are Proportional Coefficient, Integral Time and Derivative Time.
Inputs
No. DPT
1
2
3
4
5
6
Outputs
No. DPT
1
Room temperature control example:
The Setpoint and Actual Value are two temperatures. The output value is the control value of a valve
actuator.
Abbr.
Numeric,
S
1 byte or higher
Same as Input 1 A
Numeric,
PC
1 byte or higher
Numeric,
IT
1 byte or higher
Numeric,
DT
1 byte or higher
1 bit R
Abbr.
Numeric,
O
1 byte or higher
Name Visible
Setpoint Always
Actual value Always
Proportional
Parametrizable
Coefficient
Integral Time Parametrizable
Derivative Time Parametrizable
Reset Always
Name Visible
Output Always
Description
Target value of controller, e.g.
target room temperature
Current measured value
Controller gain
Integral time in [s]; typical range:
60...900 s
C = 1/Integral Time
i
Derivative Time in [s]; typical
range: 1...10 s
C = Derivative Time
d
Triggers the integral value of the
controller.
As long as R = 0 the integral
value is set to 0.
Description
Control value, no unit.
Typically 1 byte unsigned
(0...255)
ABA/S 1.2.1 | 2CDC509086D0201 91