spark88

I tried to run mine from the Venus, and it was too much for the venus, so hence ran it on the raspberry.

So the cloud coverage data isn't really that reliable, but I have the left the information in the dashboard ... however I've been busy with a few other things.
Primarily I want to limit how much I draw from my batteries, so I built in a "Limit Battery Discharge Feature". Thanks @deapsquatter for the help.
It kind of operates like ESS Optimised mode, except that:
1) I control how much juice I want to draw from the batteries.
2) I can set the level of juice used based on the SOC.
3) I can set different juice usage levels for day and night
4) If I hit my minimum level, then I set a recovery period for the battery
So in effect it gives priority to the Grid and then the batteries, and doesn't drain the batteries super quick when there is a heavy load.
TODO: Make sure that the batteries get a full charge at least once a week.

 

 

Quick update ... I added ESS mode now.

So since I've setup my blue install I have come across node red ... awesome is all I can say.
Last night I hacked together a little UI with some information that I wanted to see.
It also shows the grid status and announces if the status of the grid changes.
On the configuration tab I've added manual switching of relays on the venus for a start.
I'll of course add to this as I go along and update here. Things on the road map:
    - See if I can use sun forecasting to determine how much I discharge the batteries at night
    - There are certain things I want to control given the various states my system is in
    - Add a button to control modes of ESS if needed (rather than having to go through the menus on the Venus)
NOTE - Victron actually has a node-red ready version of Venus OS. Super nice, but I found as soon as I start using the UI it kills the performance of the venus.
NOTE - It was night time when I took the pic, hence no PV
The flows are available from here: https://github.com/sparkmark/victron_node_red

 

 

 

So since I've setup my blue install I have come across node red ... awesome is all I can say.
Last night I hacked together a little UI with some information that I wanted to see.
It also shows the grid status and announces if the status of the grid changes.
On the configuration tab I've added manual switching of relays on the venus for a start.
I'll of course add to this as I go along and update here. Things on the road map:
    - See if I can use sun forecasting to determine how much I discharge the batteries at night
    - There are certain things I want to control given the various states my system is in
    - Add a button to control modes of ESS if needed (rather than having to go through the menus on the Venus)
NOTE - Victron actually has a node-red ready version of Venus OS. Super nice, but I found as soon as I start using the UI it kills the performance of the venus.
NOTE - It was night time when I took the pic, hence no PV
The flows are available from here: https://github.com/sparkmark/victron_node_red

 

 

 

Hey all ...
I reached out to Dyness (China) for the settings required and battery cable configuration. I got a response the next day which was great.
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You need to make sure that the dip switch on the master battery is 0010. This is the default on battery from the factory.
Make sure to update you Venus firmware to at least 2.42
For the can bus use : CAN-bus BMS (500 kbit/s)
Make up a cable as per below:

If all works well, then you should see "Dyness-L Battery" appear as a device on the Venus
On the Venus set the following:
Goto Settings -> System Setup -> Battery Monitor and choose "Dyness-L Battery on CAN-bus"
Goto Settings -> DVCC -> Turn on DVCC
Goto Settings -> DVCC -> Enable "Limit Charge Current"
Goto Settings -> DVCC -> Set maximum charge current = 100A
Goto Settings -> DVCC -> Turn OFF SVS
Goto Settings -> DVCC -> Turn ON STS
Goto Settings -> DVCC -> SCS should show as Disabled (External Control)
On the Inverter set the following:
Battery type = Lithium Charge Curve = Fixed Bulk Voltage: 53.5 Float Voltage: 51v Sustain Voltage: 49v Absorption Voltage: 52v Absorption Time: 1hr Cut off Voltage: 46v DC Input low shutdown: 44v DC Input low restart: 48v DC Input low pre-alarm: 48v Dynamic Cut Off Values: 46v (all options) Restart off-set: 1.2v Checking The Configuration
Goto Dyness-L Battery -> Parameters. If the battery is fully charged then CCL should show as 0.0A and DCL as 120A (30A per battery). This means that the battery is talking to the Inverter
Here is a list for other SOC's

Hope this helps someone. Mine seems to be working well now.