in 800xA the Feedrforward in module PidCC is not working
In controlbuilder I connected a feedforward signal to a pid controller PidCC (from CotrolStandardLib) and enabled it with the InteractionPar.Main.EnableFF = true and FFGain = 1.0
But the feedforward is not added to the output. This remains the same when I toggle the EnableFF bit.
Does anyone have any idea what I might have forgotten?
(the installed 800xA version is 5.1-4)
Voted best answer
You may need to check the Gain setting - at some revisions of the Library it may be in % so 1.0 should be 100%.
Usually, the act of Enabling / Disabling FF should not change the output of the controller. To make a FF Signal work ....
- Enable FF Action
- Change the FF signal value
- The PID output should change by the size of the FF Change * Gain.