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Author Topic: More PV @ Courtiestown  (Read 32974 times)
linesrg
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« Reply #105 on: May 02, 2018, 04:41:35 PM »

Good Afternoon All (again),

Neil at Growatt is indeed being helpful. Apparently the currently fitted CT is from an SP1000, not sure how this came about as I've only acquired 2off SP2000. I'll shortly be changing out the currently fitted CT for an SP2000 one.

Things are pointing to a problem RJ45 socket IMHO but I'll see the fault finding process through with Neil first.

Battery at 9% Smiley

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #106 on: May 03, 2018, 08:12:20 AM »

Good Morning All,

Finally I've seen the Growatt do what it's supposed to. OK so it only charged up to 10% but it was discharging this back between 1800 - 1900. Hooray. I hate to think how much time has been lost over this issue.

As I was on a roll, so to speak, I fitted the Aurora PVI 3.6 inverter last night. The good news is that it is running this morning. You can never be sure with purchases off that well known internet based auction site.

I logged on to the ABB site as an 'installer' last night so should be able to gain the password to enable me to change it over to G59/3 mode. I see the inverter has only done 1538hrs

There is still some tidying up to do - the actual mains output cable has to be clipped up, the more eagle eyed will see it currently dangling from the round junction box.

In the meantime SWMBO has just phoned from Aberdeen railway station to advise the 0715 has been cancelled as a result of initially brake issues and then signals. This is the first train she has had to catch for some time so she is not amused, in the meantime I've got to go and persuade the pony to come near me so I can get a head collar on him and drag him into the stable for the vet and his flu jab...............

Now to look at dismantling the 'duff' Growatt and get at the small PCB on which the sensor RJ45 socket is mounted.

Late Addition - very embarrassing I see I've put the cover plate back on the inverter upside down!

Regards

Richard


* IMG_0372.jpg (508.5 KB, 1512x2016 - viewed 318 times.)
« Last Edit: May 03, 2018, 08:22:29 AM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #107 on: May 04, 2018, 09:55:57 PM »

Good Evening All,

Time for some Growatt surgery. I've gotten to the PCB on which the socket is mounted.

As you can see from the photo's the two pins of the RJ45 that connect to the mini-connector are very clearly marked 1 & 2. I have run a meter on them and the only two pins of the RJ45 that are connected are Pins 1 & 8.

Following one of Neil's suggestions I've cut the heatshrink on the CT sensor cable open to confirm which two cables were connected. As you can see it is the Blue and Orange and a visual inspection of the RJ45 shows that the Blue and Orange are connected to Pins 1 & 8.

Unless I'm missing something drastic here there is no way that this socket/ CT sensor combination can work. One has to assume that the wiring of the socket/ plugs changed at some point?

I'll send these photo's to Neil for his comments.

As you'll see from the one photo the CT sensor I inspected has got a crack in it which won't help it work properly either.

At some point I'll rewire this CT sensor (fingers crossed it will still work after a fashion) so that Pins 1 & 2 are connected to the RJ45 plug.

Comments welcome.

Regards

Richard


* Growatt PCB.jpg (79.04 KB, 640x480 - viewed 256 times.)

* Underside of PCB.jpg (87.62 KB, 640x480 - viewed 258 times.)

* CT Wiring.jpg (79.99 KB, 480x640 - viewed 258 times.)

* Cracked CT.jpg (76.98 KB, 480x640 - viewed 263 times.)

* RJ45.jpg (67.35 KB, 640x480 - viewed 256 times.)
« Last Edit: March 24, 2019, 09:30:51 AM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #108 on: May 04, 2018, 10:10:53 PM »

The clamp uses 2 wires of the CAT5 cable. The RJ45 Orange is connected to the CT Clamp's white/black wire. The RJ45 Brown is connected to the CT Clamp's black only wire

It was the BROWN and orange that I found to be connected as well.

edit; My RJ45 colours are also in a different order to yours. orange/white, orange, blue, blue/white, green/white, green, brown white, brown
« Last Edit: May 04, 2018, 10:27:55 PM by Tinbum » Logged

85no 58mm solar thermal tubes, 28.5Kw PV, 3 x Sunny Backup 5048, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, Atmos wood gasification boiler, Brosley wood burner, 2000lt buffer tank and 250lt DHW
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« Reply #109 on: May 04, 2018, 10:24:31 PM »

Good Evening All (again),

I was going to leave any further investigation until tomorrow but...............

Only the blue wire has continuity, the orange is 'dead' at the PCB end. Having looked at the RJ45 plug pin 2 is clearly the blue/ white core. Lo and behold there is continuity to the PCB.

At some point in the life of Growatt production they clearly changed from using pins 1 and 2 to pins 1 and 8.

I now need to put this unit back together and run a simple test before trying it out for real. I now know I need to change the CT sensor wiring in order to get this particular unit working.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #110 on: May 04, 2018, 10:31:42 PM »



At some point in the life of Growatt production they clearly changed from using pins 1 and 2 to pins 1 and 8.


Mine seems to be pins 2 and 8.
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« Reply #111 on: May 04, 2018, 11:16:18 PM »

Good Evening All (Part 3)

You know how can you can't put things down once you have a grip on them?

I've re-assembled the SP2000 and changed the wiring for the CT sensor.

What is they say about don't try this at home but I accessed the CU and clipped the CT around the heat pump live feed.

As you can see the previously non-functional SP2000 looks like it may actually be functional!

I'm away to Aberdeen tomorrow morning. I wasn't going to come back as I'm heading out to the Tay for kayaking on Sunday but I can see that I'll have to get back tomorrow and carry out a full test.

Regards

Richard


* Growatt Display.jpg (162.34 KB, 2016x1512 - viewed 260 times.)

* CT Test.jpg (167.78 KB, 2016x1512 - viewed 257 times.)

* Bodged Wiring.jpg (160.73 KB, 1512x2016 - viewed 260 times.)
« Last Edit: May 04, 2018, 11:18:33 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
Westie
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« Reply #112 on: May 05, 2018, 08:08:29 AM »

The crack in the CT ferrite core will reduce the inductance and mess up the CT calibration.

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« Reply #113 on: May 05, 2018, 09:01:40 AM »

Weston,

I was hoping to avoid modifying the wiring for my one remaining CT sensor but it isnít that big a deal really. Currently waiting for the chiropractor before heading back home to try the Growatt out. Itís a nice sunny day here.

Battery charged to 28% yesterday.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #114 on: May 05, 2018, 01:17:04 PM »

Good Afternoon All,

Well the 'old' Growatt has been fitted along with the CT sensor with the modified cable and all seems well. I will change out the cracked CT sensor at some point.

I still can't fathom why, using the same sensor, you would want to change the which pins you use on the RJ45 plug.

Now to focus on getting the 7 PV panels mounted on the roof.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #115 on: May 06, 2018, 09:07:59 PM »

Good Evening All,

Had to go back to the house today to get my son's kayak for an evening paddle and took the opportunity to check out the Growatt. The SP2000 was reporting that the battery was 100% charged which has to be good news. The bad news was that power was being exported.

I would like to have been back at the house this evening to see how long the house would be powered off the battery but it will have to wait until another day.

In attempting to monitor things from afar I find, yet again, that the Immersun servers are playing up at the weekend as I'm not able to get fully updated information via their app. Is it just me experiencing this. If not then I shall get on to SISEM and ask them why this keeps happening.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #116 on: May 08, 2018, 06:37:53 AM »

Remind me again what all those clamps on the same incoming supply, and thus with no prioritision, achieve?
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« Reply #117 on: May 08, 2018, 09:14:39 AM »

Nick1965,

I only have two CT's on the mains in live feed. One to the Growatt SP2000 control unit and the other to the Immersun Mk.II.

The only other CT is on the inverter outputs.

I'm intrigued as to how the Growatt keeps determining the house has a demand once it starts supplying power from the battery as the two requirements are at odds with one another.

I was running around in circles last night at one point as the Immersun saw an 'export' and started heating the EHS from the Growatt supply.

For those not entirely familiar with the Growatt operation the control unit supplies DC from the battery to the inverter and then in to the house.

The Growatt CT was showing circa 150W demand which triggered it to 'do its thing' but the actual load on the house was some 450W.

Currently I'm not sure how the system can work alongside the Immersun without some conflict at certain points.

Thoughts welcome.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #118 on: May 08, 2018, 11:13:01 AM »

Good Morning All,

I think I'm getting to the bottom of the current issue (no pun intended).

I wasn't sure that the 'loan' Growatt CT was accurate as it seemed somewhat at odds with the Immersun CT so I ran a couple of tests. The 'loan' Growatt and CT was showing an export of circa 400W yet the Immersun was set to 250W export.

I set-up my Growatt inside the house with the CT around the kitchen ring main live feed. The minim+ showed 160W and the Growatt CT showed 130W which seems near enough correlation for me.

I dragged my Growatt/ CT and installed it in place of the 'loan' Growatt/ CT and saw almost the same 400W export port figure. This suggests that the Immersun CT is out by about 150 - 200W.

I can't see how to do a 'hard' reset of the Immersun to force a re-calibration of the CT, a 'normal' reset doesn't really do a lot.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #119 on: May 08, 2018, 05:57:32 PM »

I can't see how to do a 'hard' reset of the Immersun to force a re-calibration of the CT, a 'normal' reset doesn't really do a lot.

I think you need to go through the ImmerSUN setup sequence to recalibrate to the control sensor.
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