Okay thank you, then we will stick to the plan.
One more question, how can I test this setup then to make sure that the BMS intervenes correctly in case something goes wrong, can I just remove a cable from the BMS?
And one more question about the Texu200 - I know this is a Victron forum, but I’ve made another schematic and integrated the Texu200 so I might be able to use it after all.
Do you think this will work or should I rather do without the Texu200?
To test the BMS works remove one of the battery cables, the BMS should then shutdown charge and discharge.
The diagram with the Texu unit looks OK. What you.might like to consider is moving the input from the chargers and output to the loads to one of the smaller fused connections if there is an appropriate 100A or so fuse. Then leave the inverter on the larger fuse. As you have drawn it, the cables for charger and loads will need to be oversized.
Yes, that is exactly what I meant.
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Just check tjat the rating of the Texu is OK for the inverter fusing.
Okay, i will do that. Next, I was going to check all the cable cross-sections anyway, just to make sure everything is correct.
Hello everyone, I can’t get my loading setup to work… I need to expand a bit.
Yesterday I did the following setup to charge the batteries:
It didn’t work at all with the first Battery Protect. It gave no sign of life at all. Neither the app nor the status display showed anything. Then we connected the second one to test whether the first one might be defective. Lo and behold, the second one worked immediately and we were able to charge the first battery.
Today I wanted to charge the second battery using the same setup. That no longer worked. The battery protect no longer shows anything, just like the first one.
What am I doing wrong?
Did you connect the battery and charger to the BP and then switched on the charger? The inrush current going from the battery to the turned off charger might have killed the BPs. They can only handle current in one way
Yup… That’s exactly what I did…
At this point, it may be easier to buy another charger that can work directly with the BMS.
Frustrating.
Yeah, thats a risk with the BPs, they have their usecase but i prefer relais, even if that means higher contact resistance and power loss on the coil. The cyrix-li-charge is intended to stop chargers. I mean, using a BP with a charger is also allowed, its in its manual, but it can go wrong
One more question about my SmartSolar MPPT 100/30, as I am not 100% sure whether I understand it correctly.
If I want to operate the device without Battery Protect, then I have to connect it to the smallBMS via VE.Direct non-inverting remote on/off cable, right? Or does the MPPT not need a BMS?
At least, if I understand this datasheet correctly, the MPPT does not have a direct remote connection, so I have to connect the VE.Direct cable: https://www.victronenergy.com/upload/documents/Datasheet-BlueSolar-and-SmartSolar-charge-controller-overview-EN.pdf
You have understood correctly, you need the non-inverting on/off cable.
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