one clamp report 900 watts the other reports 1000 watts the hem is only reading 1300 watts. Is there a setting that fix this?
Along that same line I have a similar issue. I have a Vera3 UI5 (v 1.5.622) and a Gen1 HEM, which I initially struggled to get setup. Now that I have it working, I have a different issue.
I live in the US and have a Smart Meter on my house, so my power company has an App that allows you to download your historic usage that you will ultimately be billed for… so I have a way to determine how much power was USED (past tense) during any hour period of time. The problem comes in where this information is only available after it downloads to some server 1-2 days after the fact. Since this will not help you monitor your power usage in real time (ie knowing when certain devices are cycling or if the kids left all 25 of the 65W floods in the basement turned on but are no longer using them), I wanted to be able to monitor my moment by moment usage… Hence the Aeon Labs HEM purchase.
I am seeing a significant discrepancy in accuracy after comparing what was recorded vs. what I actually used according to the power company. (see graph kWh used during 24 hour period)
I initially had quite a bit of trouble getting it working at all: This involved following Aeon Labs (Chris) advice and upgrading to HEM V3_67, then downgrading to V3_65, V3_64, V3_62, and finally V3_61, un-pairing / re-pairing / resetting after each. V3_61 is where my HEM starting reporting ANYTHING, so I’ve left it at that level.
In order to get anything reasonable reporting on the HEM, I had to alter parameter 1 as some others have had to do, so instead of 120, I am using ‘43’ because it gets me pretty close to reality at least during PART of the day. Multiple resets (setting 255=0 4byte dec), allowing it to fail config, then clearing 255 from the param list as per the guide that was l8nighter put together (Thank you!)
Current configuration:
1: 43 (I know, I know, but this is what it takes to ‘scale’ output to reality even after several resets)
3: 0
101: 6926 (report kWh & Watts for individual clamps as well as Whole HEM (for GEN1!))
103: 0
111: 30
113: 30
You can see from the graph that the HEM is pretty accurate during the day when everyone’s gone and the house is quiet, but when a lot of power is being used, things get VERY out of scale, almost like one of my clamps isn’t reporting, but I have changed 101 so I can isolate reporting on each clamp, and they are both reporting.
101: 2304 (Send only Clamp 1 kWh & W, not Whole HEM)
then
101: 4608 (Send only Clamp 2 kWh & W, not Whole HEM)
Each clamp reported about 600W during the quiet period of the day, when the HEM is reporting accurately, which seems odd to me given that they should add up to twice what I know I’m using during that timeframe. BTW, I know about the k->h arrows and have those oriented in opposite directions on each of the incoming phases, per forum.micasaverde advice.
So I’m not sure where to go from here to determine how to get the HEM to where I can trust what its reporting.
Any ideas?
how are you getting your graph to even work? I too have a HEM V1 but it’s pretty much useless as far as logging goes. All I can do is watch my current usage. I’m using veralite UI7
I’m also in the US with Smart Meter and have PG&E for utility, where are you getting your logs from?"
What you see there is simply an Excel chart, but you can use the Datamine to grab information like the graph below… see this discussion thread:
http://forum.micasaverde.com/index.php/topic,7750.msg213327.html#msg213327
I get my ACTUAL numbers from (DTE) Detroit Edison through an app they offer, but my goal is to figure out why my HEM isn’t recording accurately.
Does REV1 store and forward values in between update submissions?
I don’t know that they are supposed to add up.
in this case the device is probably sending a report based on % change in wattage and based on time.
so both are reading, but reading and reporting different information at different times.
the total reporting is a sum of the 2, but not necessarily a sum of the 2 numbers you see on the screen at that specific time.
if that makes sense.
Yes, it behaves just like the Gen2, where it will report Watts and accumulate kWh (and report if you configure it to). What I’m doing is using the script that was discussed in other topics that clears the kWh on an hourly schedule so as to align with what my power company makes available on a delayed basis. (at least until I get it working properly). My primary goal is to have awareness of real time usage and eventually use that data for specific tasks like someone mentioned elsewhere to have notification of an appliance that has finished it cycle, etc.
[quote=“Hexasoarus, post:4, topic:185584”]What you see there is simply an Excel chart, but you can use the Datamine to grab information like the graph below… see this discussion thread:
http://forum.micasaverde.com/index.php/topic,7750.msg213327.html#msg213327
I get my ACTUAL numbers from (DTE) Detroit Edison through an app they offer, but my goal is to figure out why my HEM isn’t recording accurately.[/quote]
So you have DTE - have you tried out their Energy Bridge?
[quote=“johnes, post:8, topic:185584”][quote=“Hexasoarus, post:4, topic:185584”]What you see there is simply an Excel chart, but you can use the Datamine to grab information like the graph below… see this discussion thread:
http://forum.micasaverde.com/index.php/topic,7750.msg213327.html#msg213327
I get my ACTUAL numbers from (DTE) Detroit Edison through an app they offer, but my goal is to figure out why my HEM isn’t recording accurately.[/quote]
So you have DTE - have you tried out their Energy Bridge?[/quote]
I have tried every which way I can to get an Energy Bridge. I’ve used the APP to order one at least 20 times, I’ve called their help line, and even reached out to a tech guy that I used to talk to frequently when I was in the Nucleus pilot program they had back in 2009. Which was awesome BTW! Unfortunately he doesn’t seem to be there any longer. I was very sad when they suspended support for the Nucleus program and it stopped working.
When I can actually reach someone, all they say is; ‘There aren’t any available right now, you’ll be notified when some become available’ Yeah… that was at least 2 years ago. I keep trying anyway. I even tried to reach the company that produces them, but they say I have to go through DTE to get one.
I’ve even seen it in advertisements lately, and I’ve called again, but I still get the same answer.
If you have some idea how to get a hold of one, YES, that would be a lot easier than my current solution.
sorry… [Rant mode: OFF]
So the way I got it was by downloading the Insight app and then hitting the button on the bottom left. I did that about 10x a day for a week and then one appeared in my mailbox.
Have you tried that?
Also, how are you getting your data from them to populate your sheet?
Here’s what I know so far…the bridge talks to the smartmeter via zigbee. The bridge has 13 months of data at 1 minute intervals, and reports up to DTE constantly. What I am trying to figure out is how to access the data on the device because that would be simply awesome to get my hands on, in realtime or otherwise.