Plug-in Switch Mini - TZWP-102 - Wrong power reporting?

[larsi70]

I have three Telldus Plug-in Switch Mini, all of them are reporting incorrect power/wattage usage. I've tested a few different loads to better understand, and it almost appears to be reporting % usage rather than W..? a ~1000w toaster is reported as ~50w, a ~1000w toaster AND a ~1000w kettle is reported as ~100w while a ~30w lamp is reported as ~1,5w.. I have excluded and included the units multiple times without it making a difference.

[yhaugom]

Hi, this is strange. I just tested mine with a Kitchen Aid blender and it seemed to report correct as far as I can understand. It reported between 0-300W and only 300W when it had a lot of resistance.

There is no possible way to change the readings from W to % or the other way around as far as I know, and as I said, it is working for me...
Did you try changing the setting for Wattage report threshold? And is the insight graph also displaying consistently wrong values?

[larsi70]

Hi, your graph looks more correct.. I can only assume I have a different firmware on my devices or something like that. I tried some heavy Googling before reporting the issue, but I couldn't find anything useful. I have tried connecting multiple devices, even loading it towards max, and the highest reading I have seen was around 100, when drawing close to 2kW.

Below is a full dryer cycle, with an average of 30w, which makes no sense, the real wattage is probably closer to 600w..

I think I have tried both with fully default settings and playing around with whatever settings are available without any notable changes to the reporting.

[yhaugom]

Is this still an issue @larsi70 ?

[larsi70]

Yes, no change, I've concluded that this is very much likely reporting the % of the max load as the wattage.. So my dryer is puling around 30% of the maximum load rating of the plug.. Seems like I am on FW 2.11 BTW.

[yhaugom]

Could you maybe try the following @larsi70 ?
When using a wall plug, preferably just after Homey picks up a change in wattage, trigger the manual diagnostic report in the app settings?
Then I will recieve a report that might include the raw values coming from the plug.
You should also be able to inspect the values coming from the plug in the Developer Tools - Zwave
Find the device you want to inspect and note the node ID, then scroll down to the Log area and enable logging.
In the Filter text input write the following 'Node[' followed by you node ID. Example: Node[124]
To make sense of the values you may need to have a look in the deivce spesification (manual).
If you start by doing step 1, I could have a look in the report and see if anything stands out.

[larsi70]

Node[99]: [COMMAND_CLASS_METER] {"Properties1 (Raw)":{"type":"Buffer","data":[161]},"Properties1":{"Meter Type":1,"Rate Type":1,"Scale bit 2":true},"Properties2 (Raw)":{"type":"Buffer","data":[100]},"Properties2":{"Size":4,"Scale bits 10":0,"Precision":3},"Meter Value (Raw)":{"type":"Buffer","data":[0,0,0,110]},"Meter Value":{"type":"Buffer","data":[0,0,0,110]},"Delta Time (Raw)":{"type":"Buffer","data":[0,0]},"Delta Time":0}

Node[99]: [COMMAND_CLASS_METER] {"Properties1 (Raw)":{"type":"Buffer","data":[33]},"Properties1":{"Meter Type":1,"Rate Type":1,"Scale bit 2":false},"Properties2 (Raw)":{"type":"Buffer","data":[116]},"Properties2":{"Size":4,"Scale bits 10":2,"Precision":3},"Meter Value (Raw)":{"type":"Buffer","data":[0,0,108,87]},"Meter Value":{"type":"Buffer","data":[0,0,108,87]},"Delta Time (Raw)":{"type":"Buffer","data":[0,0]},"Delta Time":0}