AC Control block - block inputs/outputs

[jereminius]

Hi,

I want to integrate my AUX AC with loxone (through MQTT). I can send the states with virtual inputs to the AC block, also send the outputs via virtual outputs through MQTT to the AC. However, if I turn on the AC, it gets the "turn on" message from the input, and sends it out once again through the virtual output (the AC beeps 2 times, with every status change).

Is it possible to block the inputs for a fixed period of time, after sending out a command via a virtual output (and vice versa)? Or is it only possible without abandoning the AC block completely?

Thank you

[Tico]

If you encounter feed-back loops in any control system, a useful block is the EIB push-button. This block has a State input that receives the Status (on or off) of the controlled device. The Loxone GUI is updated to reflect the On/Off state but the message doesn't flow any further.

[jereminius]

If you encounter feed-back loops in any control system, a useful block is the EIB push-button. This block has a State input that receives the Status (on or off) of the controlled device. The Loxone GUI is updated to reflect the On/Off state but the message doesn't flow any further.

do you have any idea how could i use it in my use case? or should i completely forget the AC block and make it all custom?

[Tico]

Option 1: Forget the AC block and use custom logic with the EIB push-button.

Option 2: Make a variation of the attached thread using the AC block. While this logic makes use of KNX for control, the important elements are how to avoid feedback loops using the Sequential Controller.

https://www.loxforum.com/forum/eib-knx-schnittstelle/403931-zennio-klic-dd-v3-mit-ac-baustein#post404767

Specifically for the On/Off Sequential Controller, the logic looks like this -






Where the entries "Playroom Aircon On..." connect to AI1 of the Sequential Controller and V2 of the Unequal block, instead connect the feedback from your Virtual Inputs states.

I anticipate your Virtual Inputs only update at best once per 10 seconds. There is a "Switch-On and -Off delay" after the Unequal block. This may need to be set to Don = 12, Doff =12.

[jereminius]

Thank you, Ill try this. If i understand correctly, the AC is then controlled with the Mode output in the AC Control block right? Because from the Status I dont see any output sent outwards to the AC.

[Tico]

Sorry, you've just reminded me that I had done some temporary modifications to the logic. The Status output does have control (in my case via KNX actuator).




Depending on your feedback delay, you will need to experiment with the "Switch-On and -Off delay" to extinguish the pulse on S1_Sequence_1 when controlling the aircon from the Loxone GUI. This is better portrayed in the block's info guide -




When controlling externally (ie. via an infra-red remote) the pulse on S1_Sequence_1 will cause the Loxone GUI to match the aircon state. For KNX control, this doesn't cause me any issues sending an 'On' signal to an already on state. You might find you still get the double-beep. You could try another Sequence Controller on the AC Control Status output to regulate "If status ON, don't send another ON".

[jereminius]

I gave up on the original AC Block, the EIB button works great for the on/off, however im encountering the same issue with the mode selection using radio buttons.


I change the mode on the AC using the remote, it also beeps twice. Is there an easy way to get rid of this problem? Thanks

[Tico]

There’s not an easy way to prevent the problem. Using the AC Control block results in an entire page of work-arounds. Probably a good idea to revert to the EIB switch.

I’m not at home for a few days so can’t access my Config. In the interim, you could try the EIB Dimmer block (or more specifically ‘abuse’ the EIB Dimmer block…). Press F5 on the keyboard and search on EIB.

You won’t have named modes, but if you set parameter Sts to 25, you effectively get 5 steps you can cycle through for modes. You can use a Status block on the feedback to depict what mode is in use.

Linking function blocks is also handy when you need to control and observe the response on the same screen.

https://www.loxone.com/enus/kb/linking-function-blocks/