KFU-
tronic
33
PID inverse:
The PID feedback can be inverted using the 3.061 parameter. The feedback is imported in-
versely, i.e. 0 V…10 V correspond internally to 100%…0%.
Please note that the reference must also be defined inversely.
An example
A sensor with an analogue output signal of (0 V…10 V) is to operate as the source of the feed-
back channel (at AIx). At an output variable of 7 V (70%), this is to be regulated inversely. The
internal feedback then corresponds to 100% – 70% = 30%. Accordingly, the specified refer-
ence is 30%.
PID process control