Is possible to create on/off pid controls with lookout ?

[Khalid]

Yep:  There are Lookout Objects for PID and On/Off control.  See Online Help for their details.  And post any questions you may then have. 

Good day!

-Khalid

[petre]

PID OBJECTS IS FOR CONTINUOS CONTROL. ON/OFF CONTROL WITH INTEGRAL TIME, DERIVATIVE AND PROPORTIONAL GAIN IS PID CONTROLLER WITH DICONTINUOS CONTROL. LOOKOUT DON'T HAVE DISCONTINUOS CONTROL.

[Khalid]

I guess I misunderstood your original post. 

Though I haven't worked on discontinuous PID control, it appears one can be implemented by using the PID Object along with the On/Off Control (NeutralZone) object:  The Output from the PID would be fed into the NeutralZone to get On/Off control.  Would this work? 

Again, I admit my ignorance here and am just wondering aloud. 

-Khalid

[petre]

Is not possible with neutralzone because if the controller in in 98 % and increase the autput contact ON

If the output contact is in 12 % and increase the autput contact is ON

Neutralzone is for pump.

Is another way with derivative objects were the contact close when derivative increase and off else.

Thanks

[flexman]

Without much more information on the question I am guessing that PID control is desired, with the output being an on/off signal where the on time is proportional to the Output of the PID. One way to this would send the output of the PID to the Pulse object. Pulse(timer duration)=PID out (0 to 1 ranged)*Pulse(timer period). Set the pulse time period to be fast enough that the on/off cycling doesn't upset the process, but not so fast as to prematurely wear out any output physical devices or contacts.