hello guys,

i'm building an hydraulic lift controlled by logo

So, i have a proportional valve that i want to control using the 0-10v output of the AM2 AQ extension.

but i can't seem to find the right functions to make a slope.

So the situation would be: when the start button is pressed, it needs to slowly go from 0 to 10volts. When the lift is almost at the top and triggers a switch, it needs to go back from 10volts to 0 in the same matter.

Anybody got an idea how to build such an upwards slope that could go back down again?

thanks!

Hello phino,

With a ramp, not only the transition but also starting and stopping would be much too hard.

It's best to program a filter with a sliding average or a ramp with a sliding transition. The basics are well explained in the German Wikipedia.

Greetings Ella_68

(translated with Google)

Another important warning !

As long as the elevator is just a practice project, everything is fine. But if you have a real one, you should familiarize yourself with the regulations and rules of your country. Otherwise accidents can quickly occur, for which you alone will be liable.