ABB i-bus KNX AC/S 1.x.1 Series User Manual

ABB i-bus
®
KNX
Parameters
130 2CDC508198D0211 Rev. A | AC/S 1.x.1
Function
Schematic diagram of controller:
Algorithms:
• ControlValue = ProportionalValue + IntegralValue + DerivativeValue
• ProportionalValue = Deviation x ProportionalCoefficient
• IntegralValue = IntegralValue Old + Deviation x CycleTime / IntegralTime
• DervativeValue = (Deviation - Deviation Old) / CycleTime x DerivativeTime
The controller calculates a new output value in the cycle time for the logic calculation (see Settings)
(usually every 200 ms). The output sends on value change.
If the ControlValue exceeds the Upper limit or Lower limit (see parameters), the values are limited
accordingly and the IntegralValue is reduced.
If the Reset input = 1: the integral value is set to 0.
Exceptions
For parameter inputs (Proportional coefficient, Integral time, Derivative time) not connected, the function
element uses the value 0.
Bus voltage failure, download and restart
The integral value is saved. The value is restored on restart.

ABB i-bus KNX AC/S 1.x.1 Series Specifications

General

Brand	ABB
Model	i-bus KNX AC/S 1.x.1 Series
Category	Controller
Language	English