Heating control

so this should work then.
Looking at my code, have i addressed the temp sensor correctly?
I'm trying to control the heating in relation to a set point?
Aaron

 

looking on case of sensor it says E5031RDTSL
but in toolkit, catalog no E5031TS?
screen shot of toolkit below
which one is it?

Aaron

 

Aaron
I'm going to duck your questions about the temp sensor polling/broadcasting and addressing 'cos I have no experience with these.

For the other floors, where you put the logic (whether you need other modules) will depend on whether you want to switch the floors on and off independently of one another. I'll assume that you want to implement a master switch function with the HEATING SWITCH group and that this group switches all your UFH on or off.


In that case you will need to put similar lines of code for the other floors into the stat function module.

Something like

{bathroom}
SetPoint := GetCBusLevel("LOCAL", "Heating (Legacy)", "BATHROOM SETPOINT");
FloorTemp := GetCBusLevel("LOCAL", "Heating (Legacy)", "BATHROOM FLOOR TEMP PV");
RoomTemp := GetRealIBSystemIO("Measurement App Real Value", "local", 55, 1);
if (FloorTemp >= 35%) then SetCBusState("LOCAL", "Power", "BATHROOM U_FLOOR", OFF);
if (FloorTemp < 35%) and (RoomTemp <= SetPoint) then
SetCBusState("LOCAL", "Power", "BATHROOM U_FLOOR", ON);
if (FloorTemp < 35%) and (RoomTemp > SetPoint) then
SetCBusState("LOCAL", "Power", "BATHROOM U_FLOOR", OFF);


{Kitchen}
SetPoint1 := GetCBusLevel("LOCAL", "Heating (Legacy)", "KITCHEN SETPOINT");
FloorTemp1 := GetCBusLevel("LOCAL", "Heating (Legacy)", "KITCHEN FLOOR TEMP PV");
RoomTemp1 := GetRealIBSystemIO("Measurement App Real Value", "local", XX, XX);
if (FloorTemp1 >= 35%) then SetCBusState("LOCAL", "Power", "KITCHEN U_FLOOR", OFF);
if (FloorTemp1 < 35%) and (RoomTemp1 <= SetPoint) then
SetCBusState("LOCAL", "Power", "KITCHEN U_FLOOR", ON);
if (FloorTemp1 < 35%) and (RoomTemp1 > SetPoint) then
SetCBusState("LOCAL", "Power", "KITCHEN U_FLOOR", OFF);

Delay (60);

The heating switch module can remain largely the same (except that you will need to ensure that once the HEATING SWITCH group goes off, each floor heater is turned off)

Something like

once (GetCBusState("LOCAL", "Heating (Legacy)", "HEATING SWITCH") = ON)
then begin
EnableModule("stat function");
end;
once (GetCBusState("LOCAL", "Heating (Legacy)", "HEATING SWITCH") = OFF)
then begin
SetCBusState("LOCAL", "Power", "BATHROOM U_FLOOR", OFF);
SetCBusState("LOCAL", "Power", "KITCHEN U_FLOOR", OFF);
DisableModule("stat function");
end;

Second thoughts...

One thing that would really make me nervous in doing all this in logic is the possibility of something going wrong and the safe max floor temp being exceeded. You need to have a really good think about what happens, for example, when power is restored after a power cut and be sure that you're not going to come back from work to find cracked tiles and warped floorboards.

At the very least a section in the initialisation code that just turns everything off might be a safe thing to do.

 

Aaron

Toolkit is showing you that the unit you have is really an E5031TS. The unit type, lack of a serial number, firmware version and Toolkit UI loaded all confirm that the unit is really an E5031TS. Unfortunately, this unit cannot broadcast the temperature.

If you purchased this unit from a Clipsal/Schneider retailer then I suggest you return it under warranty for replacement with a genuine E5031RDTSL. Despite using the same enclosure, the RDTSL is a significantly better sensor.

 

When using logic to control temperature, always put a bit of "hysteresis" in, otherwise you can end up with relays going on and off all the time.

So instead of :

Code:

once Temperature >= SetPoint then
  SwitchOffHeater;
once Temperature < SetPoint then
  SwitchOnHeater;

You want something more like:

Code:

once Temperature >= SetPoint + 1 then
  SwitchOffHeater;
once Temperature < SetPoint - 1 then
  SwitchOnHeater;

This gives you a "deadband" where the measured temperature can move up and down a bit without the heaters switching.


I just noticed I have now done over 1500 posts. I should really go to bed (and get a life)...

 

Not before you 'edumacate' me on code - but that will probably be at least another 1500 posts (at least)

 

To be honest i swapped the temp sensor with a schneider rep for a b&w back box - thought i got a good deal?

Is the 5031RDTSL available in uk format face plate?

what other options are there for a sensor sitting on the c-bus loop located above the room door way?

Aaron

 

Yes, the RDTSL is available in the UK square fascia.

 

E-mailed the rep, no reply as yet?

Contacted C-Bus Shop (where I normally get me stuff from) and they said the E5031RDTSL was not available yet - any idea where I can get them from in the uk?

If i was to use one of the newer 5070 thermostats which one would be most applicable?

Aaron