Smart Implant self trigerring for unknown reason

[ThatDude 8]

I use the Smart Implant as trigger to open an outside electric gate (powered by a Nice gate motor). The gate can be opened/closed via a momentary switch, so basically by momentarily shorting two pins on the gates controll module.

 

I've put the Smart Module in a dedicated, hermetically enclosed plastic enclosure, along with a small 12V DC power supply. The DC power supply gets powered from the same line as the gate motor, and the smart module outputs are connected to the appropriate pins in the gate's controll module. The smart module is configured as a momentary switch (auto off after 2 seconds), and the setup works as expected. After trigerring the smart module, the gate opens.

 

BUT

 

On a random day the gate will just start to open/close constantly without any input. The events panel doesn't on HC doesn't show any imputs/outputs/events from the smart implant. This behaviour happens event when the smart implant is not powered on, but just connected to the gate controll module pins. The whole setup can be fine for few weeks, and than one day it will start to cause issues. Disconecting power to the whole gate&implant assembly for a while "fixes" the issue.

 

Two obvious reasons this could happen:

• moisture causes a short on the output pins of the smart module
  • I don't think this is the case, because:
    • this unwanted behaviour happens can happen any time of day or night, during summer, winter, and regardless of weather
    • smart implant is in an enclosed case, does not display any visible moisture indicators (viasually)
    • there are also electronic modules form the gate itself there, and they unaffacted
• electrical interference between module and gate electronics
  • I also don't think this is the case, because:
    • the smart implant and gate electronics are spearated by a thick (3-4mm layer of plastic, and 1cm of air-gap), it would take insane amounts of current to cause intereference
    • I have a different implant mounted on the garage door motor, and it doesn't display such behaviour

 

Did anyone expirienced such a behaviour with the smart implant?

[ThatDude 8]

On 5/31/2025 at 11:52 AM, Dan991 said:

I experienced the very same issue some time ago[...]

 

 

Ok, so after some time has passed since adding a relay between my gate motor control pins and the smart implant I can confidently say that the issue was solved !!!!!! So the experts from this forum, that suggested that the voltage from the gate control pins can affect the SI were right, connecting the SI to a voltage source above a certain treshold can cause it to self tigger. A realy seems like a quite an easy way to solve such an issue. Mine is now working falwlessly for a couple of months.

 

BIg thanks to @Brors94 @m.roszak@Martin_N@Tim__@Łukasz997@Marcin Bereznicki, so cool of you guys to debug this issue with me!