Hello all you good pepole in here4 :-)

I hav a problem that I cannot figure out haw to make...

I have an analog speed control of an motor (4-20mA). I will like to do thwe following (using a analog output module on the LoOGO 8.4):

When you enable  input A (Push button attacht to input) the folowing shall happen: Motor starts to run at speed X1, but if you hold the button in for lets say 3 sec it starts to ramp up in speed until it reaches the Y1 speed (also a set value) then stay at that speed

If you press input B (another push button) the folowing shall happen: Motor starts to run at speed X2, but if you hold the button in for lets say 3 sec it starts to ramp up in speed until it reaches the  Y2 speed (also a set value) then stay at that speed

If you press input C (another push button) the folowing shall happen: Motor starts to run at speed X3, but if you hold the button in for lets say 3 sec it starts to ramp up in speed until it reaches the  Y3 speed (also a set value) then stay at that speed

If both A and B is pressed it runs at speed Y4

If both B and C is pressed it runs at speed Y5

If both A and C is pressed it runs at speed Y6

If both A, B and C is pressed it runs at speed Y7

Pls can sombody guide me in the right direction?

In advance thanks

Hello tue_

Actually, you switch the speeds with one or more muxers. For the steps with the speed increases, you need a delay that starts a ramp. But your description leaves several questions unanswered:

Firstly, what happens to the speed when switching to the next higher level ?

What speed should be assumed when switching down to the previous level ?

What speed should be started with if a high speed is selected straight away ?

And how quickly should the speed change be ?

P.S.: I have created something based on your description

Best wishes Ella_68

(translated with google)