30.03.2020, 13:03
Hi,
I've got complex plantroom controling various motors and valves.
I’m trying to find suitable script which would do as follows:
A-Output – supply to building from header - target temperature 52degC-55degC -max 55dgC
B-Input – return from building to header - target 45deg C
If above 55degC then blend using proportional 0-100% (all valves are 24V/1-10V) - analogue control currently sits on KNX
If ever difference between a-b>10 or <10 then correct through blending
I’ve checked PID script but it will fit this type of control
My KNX groups i.e.:
Group for sensor A (temp) – 4/0/14
Group for sensor B (temp) – 4/0/2
Group for absolute valve control - 2/1/177
Group for absolute FB - 2/1/178
100% means valve open and feeding system
0% means valve close and feeding bypass once temperature on output A over 55degC
I'd appreciate some guidance or ready script.
I've got complex plantroom controling various motors and valves.
I’m trying to find suitable script which would do as follows:
A-Output – supply to building from header - target temperature 52degC-55degC -max 55dgC
B-Input – return from building to header - target 45deg C
If above 55degC then blend using proportional 0-100% (all valves are 24V/1-10V) - analogue control currently sits on KNX
If ever difference between a-b>10 or <10 then correct through blending
I’ve checked PID script but it will fit this type of control
My KNX groups i.e.:
Group for sensor A (temp) – 4/0/14
Group for sensor B (temp) – 4/0/2
Group for absolute valve control - 2/1/177
Group for absolute FB - 2/1/178
100% means valve open and feeding system
0% means valve close and feeding bypass once temperature on output A over 55degC
I'd appreciate some guidance or ready script.