What equipment do i need?

Bruno_Christensen · 2019-06-04T11:46:26.935Z

HI again

now i have setup all the gear. i ordered 2 emonTx one with id 7 and one with id 8 and a emonBase.
I have uploadet the 3 phase sketch to the 2 tx and in the sketch i have given them the id that there was writen on the outside of the tx box.

But i can only see the one with id 8 on the emonBase. how do i connect the 2’ one?

i also bought 2 temp sensors, and connectet them, but the temp shows up as 173 on the id 8 tx.

Robert.Wall · 2019-06-04T13:19:01.314Z

Both emonTx should have appeared. Can you confirm that in line 105 in the sketch, you have:
int nodeID = 7;
for both units if you hare using DIP switch 1 to select the NodeID, or

int nodeID = 8; for the second unit if DIP switch 1 is OFF. (The switch when ‘ON’ adds 1 to the number set by nodeID, so I think you might have a wrong nodeID.)

Your emonBase should recognise the emonTx with NodeIDs of 7, 8, 11, 12, 13 & 14 (but not 9 & 10). So if you had NodeID=8 and the DIP switch ON, it won’t be recognised.

Bruno_Christensen:

the temp shows up as 173 on the id 8 tx.

That is 17.3 °C. There is an error in the emonBase file “emonhub.conf” You can edit it via your web browser. The “scales=” factor for temperatures should be 0.01, not 0.1 The example configuration in comments at the top of the sketch is correct. You need to change this for both nodeIDs.

borpin · 2019-06-04T13:43:38.812Z

Robert.Wall:

int nodeID = 8; for the second unit if DIP switch 1 is OFF. (The switch when ‘ON’ adds 1 to the number set by nodeID, so I think you might have a wrong nodeID.)

Every day a learning day. I wonder if the shop simply set the DIP switch therefore, so if @Bruno_Christensen did different sketches it would do as you said . Useful to understand, thanks. For my reference, where is this documented?

Robert.Wall · 2019-06-04T14:04:05.785Z

borpin:

For my reference, where is this documented?

In general, or just for the 3-phase sketch?
In general - I wouldn’t know - you most probably need to read the sketch in question. The default sketch is nodeID=8, and subtracts one with the DIP switch. This probably goes part way to explaining why Nodes 7-10 are labelled emontx4 - emontx1 in reverse order. It would make a lot more sense for the default to be nodeID=7 and emontx1 and the switch to add 1.
For the 3-phase sketch, (a) in the documentation that’s part of the download, or (b) in the comments.

borpin:

I wonder if the shop simply set the DIP switch

That’s exactly what I suspect has happened - they didn’t know the 3-phase sketch would be loaded and assumed it would be the default single-phase one.

Nodes 9 & 10 most likely won’t work for anyone, as emonhub expects a signed integer for the pulse count, whereas the sketch sends an unsigned long.

[I’ve flagged this to Gwil in PM - hopefully he’ll correct the faulty emonhub.conf]

Bruno_Christensen · 2019-06-04T15:26:52.796Z

i have one with int nodeID = 7; and dip 1 ON
and one with int nodeID = 8; and dip 1 OFF

Robert.Wall · 2019-06-04T15:38:19.516Z

Both are actually NodeID=8
7 + 1 = 8
8 + 0 = 8

You thought you had one Node 8 and the other was not working - you actually had both reporting as Node 8. You might have seen the values reported varying because it would show the value for one, then the other.

If you turn off the DIP switch for the one with int nodeID = 7, then that one will appear as Node 7. There is no need to edit and reload the sketch, but you must press the reset button after you have changed the switch, because it only looks at the switch as the sketch starts.

Bruno_Christensen · 2019-06-04T15:41:27.485Z

Thx. that worked

Bruno_Christensen · 2019-06-04T17:30:49.258Z

Is there a guide to setup “my solar” app view with 3 phase solar?

Robert.Wall · 2019-06-04T17:48:06.494Z

Not that I am aware of. And I don’t know emonCMS sufficiently well to offer any suggestions.

Robert.Wall · 2019-06-04T18:06:01.185Z

This question has been asked again here: 3 phase solar setup

Bruno_Christensen · 2019-06-09T10:15:45.089Z

is it normal that i need to set the scale to:
scales = 2.03,2.03,2.03,1,0.0093,0.01,0.1, 0.1,0.1,0.1,0.1,1

to get it to show the correct watt?
and can I expect that when I have measured one of them, does it fit all 6?

Robert.Wall · 2019-06-09T11:16:51.036Z

No, it is definitely not normal, unless you are using sensors that are not our standard ones.

The calibration of the 3-phase sketch as distributed is set for the emonTx V3.4 using the standard UK a.c. adapter and 100 A current transformer - as given in the documentation (“emonTx 3-phase PLL User Doc.pdf”) that was included in the zip file you downloaded.

Which a.c. adapter and which current transformer are you using?

Bruno_Christensen:

does it fit all 6?

6 ?
Do you not have only 2 emonTx’s?
You can expect the calibration for each main channel of the emonTx’s to be close, but I do not expect all to be exactly the same, because each current transformer (our standard) has a tolerance of ±3%, the a.c. adapter likewise. And then you must add the tolerance of the components inside each emonTx. But that does not account for an error of ½ ×.

Bruno_Christensen · 2019-06-09T11:31:18.499Z

Im using the a.c adapter you sell, and the current transformer is yhdc sct-013

ohh i just calibratet it in the enmonhub config.

Robert.Wall · 2019-06-09T12:03:57.180Z

Which SCT-013? There are many variants. Only the SCT-013-000 is directly suitable for use with the emonTx.

SCT-013-000 and SCT-013-000V are NOT the same, if you have the -000V that would almost explain your problem. The SCT-013-000 has a 50 mA output at 100 A, the SCT-013-000V has a 1 V output.

Can I check? Your supply is 230 V measured line - neutral, and 400 V measured line - line.
And you have the “Ideal Power” 77DE-06-09-MI a.c. adapter, plugged in at a 230 V socket?

Have you set up the c.t’s on the correct cables? If the “phase rotation” is wrong, then the values you read will be wrong by exactly ½. The instructions for setting up and calibration are in the “User Doc”.

Bruno_Christensen · 2019-06-09T12:39:27.359Z

i got them here.

aliexpress.com

2.67￡ 17% OFF|1PCS Non invasive Split Core Current Transformer AC current...

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I just say SCT-013-000.

the ac adapter is in a 230v socket connectet to phase 1.

i have the Ct1 to the firste phase ct2 to the second phase and so on.

Robert.Wall · 2019-06-09T13:14:06.930Z

Bruno_Christensen:

I just say SCT-013-000.

The text on the web page says “SCT-013-000”, but the photo is of a SCT-013-050, which is 1 V output at 50 A.

What is written on the c.t. itself?

Also

Bruno_Christensen:

i have the Ct1 to the firste phase ct2 to the second phase and so on.

But which phase is the a.c. adapter? It must be the first phase. If it is on the second or the third, that is your problem.

Bruno_Christensen · 2019-06-09T13:34:46.844Z

it say sct013 and nothing else. i think i will order 6 from youre shop, then i know it is the correct one.

the adapter is on phase 1

Robert.Wall · 2019-06-09T13:40:52.213Z

Before you spend money, if you have a multimeter, take a c.t. from its cable, disconnect it from the emonTx and measure the resistance between tip and sleeve. You should read about 100 Ω if it is a SCT-013-000, or about 20 Ω if it is a SCT-013-000V.

If it is the SCT-013-000V, you can (if your electronics skills are good) remove 3 resistors in each emonTx to convert it and make it suitable.

Bruno_Christensen · 2019-06-09T13:51:50.173Z

i get 93.3 Ω

Robert.Wall · 2019-06-09T14:34:17.201Z

I think you DO have the correct c.t.

Are you certain that the a.c. adapter is on phase 1?
At this time, you have
c.t.1 → line 1
c.t.2 → line 2
c.t.3 → line 3

Can you move the c.t’s round, i.e.
c.t.1 → line 3
c.t.2 → line 1
c.t.3 → line 2

and then
c.t.1 → line 2
c.t.2 → line 3
c.t.3 → line 1

If one of these gives you the correct power, then the a.c. adapter is really on a different phase to the one you thought it was on.