Beiträge von adorobis

Zitat von thgoebel

It would be more convenient and reliable to use the SENS Vcc pin (4) for the high side of the contacts, as I mentioned above.

Hello, interestingly the connection to the input from AC source was also described in the manual:

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My Uni gen1 device has failed after a few years of such usage with 24V AC power supply (could this connection method be the cause?) and I'm now replacing it with the gen2 device (Plus Uni). Do you know if the same connection applies? From what I can see in the manual such connection is not described there anymore (neither via Sens VCC):
image.png

Shelly Plus i4 gives you the scripting capability so I would explore this option. Most likely this should be possible.

Issue has been solved in firmware 0.11.4

Some good news, according to the changelog latest firmware has this solution fixed:

Changelog | Shelly Technical Documentation

I'll test it later today.

I just got a replay that fix is in the works for the next firmware release and beta most likely will be ready next week. Good news finally

Yes, I know this changelog but so far fix to this issue is not mentioned in any of the releases... still waiting.

Do you have anywhere confirmation that it should be fixed in 11.2? Because I've never received such commitment unfortunately.

Still no news on when it will be fixed...

So here is the summary. I have followed recommendations from thgoebel and selected option c (a resistor of approximately 500kΩ to 1MΩ in series to Shelly‘s SW input). With such connection the state of inputs in Shelly i4 is reversed (when motors are running it shows OFF and when motors are off the inputs are in ON state). The logic can be reversed in Shelly i4 configuration. I have used the following resistors soldered in line with connecting cables:

Resistor: thin film;SMD;0207 MELF;560kΩ;1W;±1%;Ø2,2x5,9mm

Manufacturer: Viking; OEM nr: CSRV0207FTDT5603;

Below is the diagram of my connection (just one motor for better clarity).

Now I have full status information of my gate in Home Assistant (closed, open, closing, opening). With additional closed sensor I know when the gate is fully closed and based on the time of opening I know when it is fully opened. So with this I can safely open or close the gate without seeing it and it will react properly. So for a cost of ~20EUR (Shelly Plus i4, nodemcu esp8266 board for closed gate sensor and gate control - this could be achieved with Shelly 1 as well) I have converted very simple gate controller to a fully smart one with google assistant controls, automations, notifications etc.

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That is interesting. Indeed this solves the problem, although now the input is shown in reverse. When the motors are stopped Shelly input shows as ON and when they are running Shelly shows as off. This is not a problem as I can now reverse the logic in Shelly. Many thanks!

thgoebel

OK, so I got my resistors (560k) and I've installed them as per option c. There is good progress as now Shelly i4 detects when the motors are running. But it detects both phase cables irrespective in which direction a motor is running. Any idea how this could be solved? Would higher resistance block the input from the phase that is not powered? Motors are connected to the controller with a large capacitor (8uF most likely) connected between both L cables so probably there is still some current going in to the other phase from the powered one.

I'm unfortunately not very good in understanding electronics the moment you add something more than resistance to it

Yes, that's my plan (and practice so far)

Great, many thanks!

Zitat

BTW: If you have an issue to get the parts or a ready-to-use resistor, please drop me a message!

Many thanks for your offer, I have already ordered the resistors of similar specs as the ones on the thread you've shared earlier, so should be able to play with it at the end of the week.

Zitat

(c) a resistor of approximately 500kΩ to 1MΩ in series to Shelly‘s SW input.

thgoebel

This option seems the easiest and the most convenient to implement.

I have one question though: Those gate motors have 2 phase cables (for two directions) so detecting on N is not giving me the required information. Will putting the resistor between the L input of the motor and input of the i4 work ok? Or it will only work on N switching?

Many thanks for express reply!

Hello,

Is it possible to detect if gate motors (swing gate) are being powered with Shelly Plus 4i? When I connected it to the motors phase wires it was constantly showing as on and the device was getting hot. But the phase detector was not showing current being supplied to the motors. How could this be achieved so that I could sense with Shelly Plus 4i when the motors are running?

Thanks, need to check if I have any diodes in my boxes

Many thanks! I was hoping to have a simple device, based on that thread I'm not sure if just adding a diode will fix the issue. And a bit strange is that it worked ok for quite some time already, only once the issue when the power was cut and restart of shelly uni was resolving it... In worst case I'll add a DC transformer or switch to a different device. Actually I've just checked and the sensor switch is rated at 230V so I could be able to use Shelly 1 without any additional transformer/power supply.

I have received response from shelly support that it is a known issue and will be fixed in a future firmware update but no specific date provided.

Agree with 66er. Just go for 4 (or 3) wire control motors and control them with Shelly 2.5 or Plus 2PM. You can later integrate it with any home automation solution you like or just use the Shelly mobile app. It will also allow you to still control it with physical buttons/switches connected to shelly.