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Author Topic: More PV @ Courtiestown  (Read 32954 times)
marshman
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« Reply #45 on: March 19, 2018, 08:34:11 PM »

Good Afternoon All,

Whilst I haven't been monitoring the PV output via the Immersun readout all day I did see the system putting out 5623W at one point earlier this afternoon.

Given the house was using some 650W and the Immersun was diverting 2.7kW to the immersion in the EHS there was little risk of exceeding my allowed single phase limit.

I am part way through acquiring a Aurora inverter to meet my DNO specified G59/ 3 requirement.

My biggest headache is getting either of my two Windows laptop devices to 'talk' to the Growatt. The whizzo cable is assigned COM 3 on both devices but I can't get any communication going.

The SP200 charges the batteries to '5%' then the battery temperature out of range alarm comes up.

Any suggestions?

Regards

Richard

As Nowty says get a cable with a FTDI chipset. What version of Windoze are you using? Sometimes there are issues with Windoze and setting up a VCP (Virtual Coms Port).  Usually it is all plug and play but sometimes it gets messed up - this can happen if you have had other USB to serial interfaces connected at some point. As I recall there are 2 parts to the driver software - the USB driver and the bit to convert the USB serial to a  COM port the software can see. Not had any experience of Aurora inverters but the older SMA inverters used to require the baud rate to be set to 1200 baud or they wouldn't talk, so have you checked the port parameters? I have found the FTDI drivers when downloaded from their website and matched to the correct version of windows to work on all versions of Windows OK (XP onwards) .

Roger
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3.15kWpk (15xSharp ND210)/SB3000. & 3.675kWpk (15 x Suntech 245WD)/SB4000TL, 10kW GSHP driving Wirsbo underfloor heating from 1200m ground loops. 10' x 7' solar wall (experimental). Clearview 650 Wood Burning Stove. MHRV - diy retrofit. Triple glazing.
linesrg
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« Reply #46 on: March 19, 2018, 08:45:04 PM »

Roger,

Thanks for the comments, I've just sent a PM to nowty. I have a cable with the FTDI chipset, I think I need to read the instructions again........

I exported 2.3kWHr today which could have gone towards charging the battery........

One laptop is running XP and the other a 64bit Windows 7 Professional.

As of 0015 I'm re-installing the FTDI lead software on the Windows 7 device again.

Regards

Richard
« Last Edit: March 20, 2018, 12:10:17 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.
linesrg
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« Reply #47 on: March 20, 2018, 10:10:59 AM »

Good Morning All,

Well I don't seem to be making any progress trying to communicate with the Growatt as I've been out armed with the re-loaded laptop. I've set the Shine Bus (Device Info page) to COM3, Inv Add: to 1 and Period(ms) to 495 and then press the 'Start' button and nothing happens.

This is getting very frustrating. I have no reason to suspect there is a fault with the Growatt as it seems to be working otherwise.

Err help!!!!

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.
nowty
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« Reply #48 on: March 20, 2018, 11:49:49 AM »

On the Windows device, have you checked through, Control Panel > Hardware and Sound > Device Manager > Ports (COM and LPT) > Communications Port (COMx).     (where x is your Com Port number). If this is not 3 then you need to change it in the Shine Bus.

Also in Control Panel (with the UBS cable plugged in) > Hardware and Sound > Device Manager > Universal Serial Bus Controllers > USB Serial Converter.    Is this showing as working properly.

My Shine Bus has Period (ms) set to 600. Although I have just tried it as 495 like yours and it still works ok.
« Last Edit: March 20, 2018, 11:54:46 AM by nowty » Logged

11kW+ of PV installed and 54+ MWh generated.
Lithium battery storage of 50+ kWh.
Hot water storage of 15+ kWh.
Heat storage of 15+ kWh.
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linesrg
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« Reply #49 on: March 20, 2018, 12:09:50 PM »

nowty,

In Device Manager the d-sub cable is showing as installed on COM3.

The USB Serial Converter is showing as working.

I might try going out to 600ms.

In the meantime I have decided to tackle this from the other direction. Armed with my hot air gun it doesn't take long to eliminate the out of range error message, it cleared to give me a no AC flow error message but that is due to lack of Immersun diversion. OK so time to peel the 'gunk' off the connectors on the PCB which are pretty obviously the temperature sensors.

As you can see from the photo there are sensor points (on the PCB) adjacent to the connector. Having applied heat and eliminated the error message with a resistance of some 20k (measured with my trusty Fluke). As the battery pack cooled down again it went down to around 22k when I came in to post this and the error message hadn't returned. A best guess would be that these are 10k NTC's.

Having replaced the thermistors with 20k resistors the out of range 'problem' has gone away..

Regards

Richard





« Last Edit: March 20, 2018, 03:47:22 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.
Dave Fowler
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« Reply #50 on: March 21, 2018, 05:56:16 PM »

It looks like there's some moisture marks round the NTC plug and socket.  Could there be a problem with corrosion residue under the plastic?
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sam_cat
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« Reply #51 on: March 22, 2018, 08:25:35 AM »

I would start by repairing this damaged connection:



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linesrg
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« Reply #52 on: March 22, 2018, 08:48:11 AM »

sam-cat,

Having stripped the sheathing off the cable the strands are quite fine. Having reduced the size of this photo to post it probably gives a misleading 'picture'. The connection is good as I've tested them both via the onboard test points (P26/ P28 in the picture) and also the out of range alarm on the SP2000 has gone.

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.
sam_cat
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« Reply #53 on: March 22, 2018, 09:11:20 AM »

Have to take your word for it, but in that picture it looks bad/damaged. At the very least it now has very poor stress reduction and a slight tug looks like it would make it fail.
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Tinbum
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« Reply #54 on: March 22, 2018, 09:15:25 AM »

Have to take your word for it, but in that picture it looks bad/damaged. At the very least it now has very poor stress reduction and a slight tug looks like it would make it fail.

That is the resistor connection he has just put in to replace the temp sensor.
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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 #55 on: March 22, 2018, 10:13:01 AM »

sam_cat,

OK - it does need to be more durable as I intend to leave it like this for the near future. I'll now need to find out what these connectors are and order some................

Regards

Richard
« Last Edit: March 22, 2018, 11:02:28 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.
sam_cat
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« Reply #56 on: March 22, 2018, 10:44:00 AM »

sam_cat,

OK - it does need to be more durable as I intend to leave it like this for the near future. I'll now need to find out what these connectors are order some................

Regards

Richard


Looks like microlatch wire to board, but hard to tell from the pic.

Take some better pics (lots of light, rest camera on pile of books for better support) and also pull the connector out and get pics of that. Ruler for scale in some pics. We can find the connector for you (As a hobby I do a lot of DIY electronics, building amplifiers, dacs, control circuits, etching own PCBs etc....)

Smiley
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linesrg
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« Reply #57 on: April 01, 2018, 10:04:12 PM »

Good Evening All,

I still have reservations about the Growatt, it charges the battery to 5% and then 'gives up'.

There has been progress this evening in that my eldest son has persuaded his Windows 10 laptop to run the Growatt software and then loaded the FTDI cable as well and we now have communication with the Growatt as per the picture below. I need to go back and try my other two laptops but on Inv 0 rather than Inv 1 as suggested by the Growatt literature.

I now need to determine if the length of CAT 5 cable between the CT sensor and the Growatt is too long and leading to the signal being degraded. I read somewhere that paralleling twisted pairs might improve this situation (was it here?Huh).

A good day from a solar front with 22.2kWHr produced.

Regards

Richard


* Readings 01.04.18 TIME 2000[1].png (117.09 KB, 573x327 - viewed 225 times.)
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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 #58 on: April 02, 2018, 09:57:32 AM »

Modbus should be good for 1300M. It may be worth using specific modbus cable, or CAT5E/CAT6.
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1.140kW mono south-facing at 49*
EpEver 4210A at 24v
24V 400 Ah battery. (4x200Ah FLA)
EpEver STI1000-24-230 pure sine inverter
Of course it'll work. (It hasn't caught fire yet).
linesrg
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« Reply #59 on: April 02, 2018, 05:59:03 PM »

Good Evening All,

Well the Dell notebook that I thought wouldn't communicate with the Growatt has earlier this afternoon so I'm a little confused as to why it didn't previously, I imagine I automatically set the Inv to 1 and never tried the 0 setting.

Now to try and get to the bottom of why it seems to stop charging when the battery gets to 5% as well as reset the low battery temperature function and re-connect the thermistors.

Collectively do 'we' know what the default settings for a Growatt SP200 are?

Regards

Richard
« Last Edit: April 02, 2018, 06:22:07 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.
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