PID deadband

[krishy2]

The PID function lacks deadband. I'm using it for a 3 way valve control for temperature. 1-2 degrees is not an issue, but the lifetime of the valve would suggest not to operate too often.
For this case the industrial systems has a deadband function, which helps to achieve less interaction with an affordable error. Whoever is the maintainer of PID I'd like to help to make it more professional.

[Wintespe]

Try to change the time behaviour via TC. This will result in decreased activity. Refer to:

Feautre request for PID-Control: Adjustable cycle time #17656

[krishy2]

I'm not talking about Timeprop! I'm using pid with a 3way valve, so a shutter is defined for 2 relays.
Trust me, the solution here is a deadband. Otherwise just workarounds will be done which will effect other parameters in a bad way.

[Jason2866]

For any changes a PR is needed and welcome. No need to ask for permission :-)

[krishy2]

But I need help to know the principles from the maintainer. I am experienced PLC programmer, but not experienced enough in ESP.