Beiträge von disuye

    I would appreciate the “bullet-proof” solution too! Cheaper and more reliable…

    Not sure if a 3 phase contactor + 1 Shelly is indeed cheaper than a S3Pro these days! All my local electrical shops are selling ABB, Hager, Schneider, Legrand etc. etc. brand DIN 3-phase contactors for anywhere from EUR 60~120 depending on spec. But I'll probably go this route all the same. Pulling up a broken borehole pump from 200m+ is a huge pain and definitely more expensive than a contactor :)

    I bought a couple Shelly 3 Pro for automating various 3-phase pumps. During my bench tests w/ Home Assistant I notice that the three relays aren't triggering 100% simultaneously (there is a very tiny delay as the relays engage; always in the same order 1-2-3, with approx. 0.25 seconds gap in between each relay).

    I'm not sure if this is due to Home Assistant / network delays etc. causing sequential triggering... But my question:

    Is there any way to gang all the three relays together within the S3Pro firmware, and trigger all relays as *one* single device / entity (instead of three individual devices / entities)?

    Note: My concern is to avoid the (very small) risk of one-of-three relays not 'getting the message' from Home Assistant and my borehole pumps being forced to run on less than 3 complete phases. Many thanks!

    Note 2: Yeah, my alternative option is to use a single-relay type Shelly plus a 3-phase contactor (which is probably the more bullet-proof solution).

    OK great thanks!

    I have a feeling that I may have slowly killed this Shelly, it should have been OK according to specs (the heater draws max 2600W @ 240V), which is below the 16A limit.

    In the end I used a Shelly to remote control a 25A DIN contactor in the main circuit box for the water heater. I lose the power metering capability, but the Shelly can't overheat.

    Hi all, title says it all. I'm using a Plus1PM to control a ~2500W water heater, and it's been fine for the last 5-6 weeks. However the Plus1PM switched off the boiler twice today (the relay to the heater switched off; the Plus1PM kept running OK).

    I'm curious how hot the Plus1PM needs to be before switching off the relay due an Overheating incident?


    Many thanks!

    Dan

    Title says it all really.

    I have an old sliding gate which I've retrofitted with a Shelly 1Plus (a wifi relay w/ a 1 second timer, that mimics a user cycling between open > stop > close etc.) and Home Assistant.

    What I want is to do is get notifications in Home Assistant when the gate is open or closed. Is the Shelly Uni the correct product for this? Or something else?

    Note: Inside the existing gate control unit there are 2 microswitches – one is 'on' at open-stop and the other is 'on' at closed-stop. When either microswitch is 'on' I measure 24VDC across the microswitch terminals. I thought about hijacking this 24VDC power to run a Shelly device, but when each microswitch is 'off' then 24VDC no longer exists across the terminals: As if the gate control unit 'flip-flips' power to the microswitches. I don't fully understand the logic to be honest.

    My gate control has 24V*AC* auxiliary power terminals, but no DC aux power. And I could use the 220VAC mains power.

    Anyway, assuming I can find power somewhere, what Shelly device can I use to get the open & closed status of the microswitches? Thanks in advance ladies & gents!