Growatt spf 5000es supply issue

[kosmotyp]

Hello, I have two Growatt spf5000es Inverters. When I'm using the battery and the the voltage go below the set values its supouse to start to use the utility supply. And it use it for my loads, but invertors continue to use the battery for their supply. Do you know how I can set the invertors to use supply from utility only in that case? Thank you in advance.

 

[Mattb4]

Not sure if I understand your question. If you are saying that when operating in AC Bypass there is still a draw on your battery you are correct. It is not running the inverter it is powering the AIO circuitry. This is usually not a problem if you are getting solar or if you have some utiilty charging current set. However it can drain the battery low if neither is happening.

If instead you are saying it does not transfer to AC Bypass when below set voltage to do so we would need to know what modes you are operating in. Can you select Uti mode and AC Bypass happen?

 

[bai_shefa]

Hello,
I also have two inverters in parallel (single phase) SPF 5000 ES with firmware 040 05 701; 041 05 701. Batteries 4xSLA 12V / 24Ah (They are small only to support parallel operation).
I also have the same issue. When there isn't enough power from PV modules, the batteries are not charging. I have specified Program 14 to be SNU. The problem is that if it is a cloudy day, or the load power is more than PV production, the inverters draw 1.6 to 2A from the batteries the whole day without charging. They even drop below specified voltage in Program 21 48.0V. They start charging after sunset. I tried different settings but it is still the same.
I only managed to make them charge the batteries the whole day using in Program 1 SOL. But then the panels are not used to supply load if they don't have enough power. And inverters switch internal relays many times a day.
Is it normal behavior? May be I am missing something in configuration.
Here is my config:

Program	Description	Setting
01	Output source priority	SUB
02	Maximum charging current	3A
03	AC input voltage range	UPS
04	Power saving mode	DIS
05	Battery type	USE
06	Auto restart when overload occurs	DIS
07	Auto restart when over temperature occurs	DIS
08	Output voltage	230V
09	Output frequency	50Hz
10	Number of series batteries connected	4
11	Maximum utility charging current	2
12	Setting voltage point back to utility source	51.2
13	Setting voltage point back to battery mode	54.0
14	Charger source priority	SNU
15	Alarm control	ON
16	Backlight control	ON
17	Beeps while primary source is interrupted	OFF
18	Overload bypass	ENA
19	C.V. charging voltage	56.4
20	Floating charging voltage	54.4
21	Low DC cut-off voltage	48.0
23	AC output mode	PAL
28	Address setting	1
37	Real time setting---Year
38	Real time setting---Month
39	Real time setting---Date
40	Real time setting---Hour
41	Real time setting---Minute
42	Real time setting---Second
43	Battery equalization	DIS
44	Battery equalization voltage	58.4
45	Battery equalized time	60
46	Battery equalized timeout	120
47	Equalization interval	30
48	Equalization activated immediately	OFF
49	Utility charging time	0000
50	AC output time	0000