Hi all, I just installed the Aeotec ZW095 energy meter and configured it with HA. Everything seems to be communicating as it should, but most of the values being reported are negative, such as the watts. Is there a config setting that will fix this? I’ve tried changing some of the reporting parameters but they don’t seem to have any effect. Thanks.
I’ve exactly the same thing here. Did you ever find a solution?
I wound up just flipping the clamps on the meter and everything started coming in positive. Apparently my breaker box is just backwards from how the instruction manual says it should be.
worked a treat!
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@Bill_Rollo , @Rox897 can either of you elaborate a bit on how you ‘flipped’ the clamps?
I just installed a zw095, the version with the two clamps and the AC plug, immediately after installing and the integration, I got all the sensors but noticed that aggregate power and also all the currents and partial power were all negative.
Following the discussion here, I tried inverting the direction of both clamps (i.e. if K > L was pointed pointed “towards the house” I inverted it and pointed it towards the street, leaving the clamp on the same cable. I reversed the other clamp in the same way. Now the value for aggregate power is positive but the current values are still negative, I find this weird.
Did you ran into this too, if so, how did you solve it? I wonder if I need to swap the clamps, move each clamp to the other cable. Any hint on how to approach this would be great
I just moved from ST and was integrating the HEM into HA running into your same issue. Since I am quite sure my clamps are on properly, and that the phases to my house did not shift, I opted to figure out how to fix it without inverting the clamps. I don’t know whether I did the correct thing but this works - change parameter 2 to "Power - Absolute value of energy. I don’t have solar so it should always be positive anyway. Not sure why it was reading negative.
Anyhow, it takes a while before the dashboard updates to positive, likely because it doesn’t retroactively update past numbers.
If anyone can comment on parameter 2 and the proper setting, that would be great.
FWIW, in my case (with positive “total” power readings but negative amp readings and per-line power readings), what I ended up doing to avoid having to disassemble my electrical panel again is swapping the clamp connectors in the main-unit side, that fixed the problem completely.
Then I proceeded to verify that the power readings from the ZW095 are accurate after the swap by connecting a known large load (the boiler of an espresso machine) that has a zwave switch that also measures power, for a few minutes, and compared the delta from the ZW095 and the zooz switch power reports, and they were the same within two decimals.
I think the second issue I had was that the plug in the basement that I use for the ZW095 was coming from a different hot feed from that where I originally connected Clamp #1. Clamp #1 and the AC plug need to be on the same feed, per the short instructions from aeotec. I didn’t confirm this 100% but I do know I didn’t properly check this while I had the electrical panel open.
I’m really impressed by this device and I already spotted a couple opportunities for savings.
For fun, here’s my dashboard,
I can confirm that I needed to flip the clamps around and then I got positive values. I even tried plugging the HEM into a circuit that was on the other phase but that didn’t work either.
How were you able to get regular reporting though? I had to write an automation to refresh values.
Yes it reports every 2 minutes or when the variation es more than 10% on any of the parameters. It’s been rock solid, working for 3 years and counting!
I have some 45 zwave devices at home and this one must be the most stable and hassle free. Hopefully I am not jinxing it!
What firmware are you running? A lot of people (myself included) can’t get it to update more than once every six hours.
These are the details and the device config in case it helps.
Seeing the config I realize I had turned off threshold-based reporting and only use periodic reporting. with a 120s interval.
then all off from there until:
Here you can see that the device is updating every 120 seconds, the value I use for “automatic reporting interval”
I checked in the above the timestamps showing and confirmed that the length of the ‘steps’ is 2 minutes.
It’s been working non-stop for 3 years. For the first few months I used 60 seconds but thought that would kill my zwave network so I lowered to 2 min.
I setup victoriametrics/grafana at home in early 2023 and have been consuming the house power measurements since then
Looks like you’re running older firmware. Do yourself a favor and never update that. It doesn’t seem to care what settings I throw at it.