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ABB i-bus
KNX
Parameters
Room temperature control example:
The setpoint and actual value are two temperatures. The output value is the control value for a valve
actuator.
Parameters
Name
Controller type
Proportional
coefficient
Integral time
Integral time as
input
Derivative time
Derivative time
as input
Limit output
value, anti-wind-
up
Lower limit
Upper limit
Description of parameters
Controller type:
Value
P (Proportional)
PI (Integral)
PD (Derivative)
PID
If the controller type is P (Proportional), the integral value and derivative value are always 0.
Value
- Proportional (P)
- Integral (PI)
- Derivative (PD)
- PID
Floating point number,
default = 60
Floating point number in [min],
default = 90,
0 not permitted
- Yes
- No
Floating point number in [s],
default = 1
- Yes
- No
- Yes
- No
Floating point number,
default = 0
Floating point number,
default = 255
Description
Proportional controller. The integral and derivative coefficients are 0.
Proportional integral controller. The derivative coefficient is 0.
Proportional derivative controller. The integral coefficient is 0.
Proportional integral derivative controller
Visible
Description
Always
Always
If Controller
Integral time in [s]; typical value
type = PI or
range: 60...900 s
PID
If Controller
type = PI or
PID
If Controller
Derivative time in [s]; typical
type = PD or
value range: 1...10 s
PID
If Controller
type = PD or
PID
Limits the output value to a
range. If this range is exceeded,
Always
a limit is imposed on the integral
element in the controller ("anti-
wind-up")
Always
Always
AC/S 1.x.1 | 2CDC508198D0211 Rev. A 129
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