Hi Folks,
I just want to confirm my understanding of the Lynx Power In module.
Am I able to connect the battery +/- to the tabs on the left of the unit and then wire in a Multiplus-II (12/3000/120), MPPT 100/50 and Orion XS 12/12-50 into the Power In module. Then use the Lynx Distributor to wire in DC loads etc?
Cheers
Hello Matt,
Welcome to the forum 
You would be able to connect your battery to the tabs but that is not how the product is designed. The tabs are for interconnecting the Lynx rails on both sides. The Lynx-In has fuse holders for your battery. The tabs do not have a fuse. Isolation is well designed inside the lynx for your DC +/-. The tabs have no specific isolation for your battery cable lugs since they would normally just connect the Lynx modules. I personally would not do it that way.
regards, Alfredo
Just to be clear, the lynx power in has no fuse holders, the lynx class-T power in does have them.
The system is designed as a bus bar system with a battery input, shunt and/or BMS and power output in separate modules but can be used as you described, see this schematic on the victron website for an example.
thanks @mac this connection of the battery is kind of what I was thinking, however it looks like there is a smart shunt off the negative? I do have a 300Ah NG Lithium Battery so leaning towards the Lynx 500 BMS NG, would this slot between the Power In and the Distributer? Would the Lynx BMS allow me to see the state of charge etc of do I need to include the Lynx Shunt into the mix? Lastly, would you wire the multiplus and orion xs into the power in also?
Thanks again
You can sort of do it, but it looks a bit weird. You need to separate charging and discharging, which requires an extra negative bus for the MPPT, Orion, and Multiplus. The battery can be connected to the power side along with your loads, but you won’t have many spare slots, and most of the connections will share one of the M8 bolts.
You can add fuses to the lynx power in. You will need to buy some more M8 bolts and washers, undo a few screws and put them in. Putting the multi on the tabs is the best way.
There is a schematic example on the lynx smart BMS NG datasheet.
Yes, see the linked datasheet.
No, in this case you use - from left to right - a lynx module to connect your batteries, a lynx module with BMS and/or shunt, a lynx module for your loads. The point is to measure and/or disconnect the loads from the battery.
When limited in space and using only one battery you could get away without the lynx module to connect your batteries and connect directly to the BMS/shunt module. Do make sure to follow local regulations and put an appropriate fuse on the battery.
Brilliant, Thank you.
Thanks for the reply, can see how it would look weird.
You could do as you plan as long as you have fuses for the equipment connected to the power in within the cables as they are not protected from over current. The power in is ideally for battery power in with fusing between the batteries and the power in. Consider replacing the power in with another Lynx Distributor and connecting the batteries to the end lugs with their own separate fuses.
Thank you for the info. Will look into swapping the power in for another distributor
The distributor is twice as much as a power in. I already mentioned you can add a few M8 bolts to the power in and add fuses. They are identical in design except that the distributor has some electronics in it for the LEDs, which most people don’t need. This is what most people do.
Caravan Wiring Diagram - V1.pdf (286.8 KB)
Thanks everyone for your help so far. Would this work in terms of wiring and connections? Any suggestions?
Cheers
Should be OK as long as that 300A fuse on the battery is a high AIC fuse like a class T or MRBF or equivalent, not a mega fuse. But if you have only the 1 battery, then connect it to the lug on the left hand side of the Lynx BMS. That is what I have done, 2 12.8V NG batteries with 300A class T fuses connected to the lugs on the side of the BMS. Also why 2 Lynx Distributors, all you need is 1 as far as I can tell. I have 3K Multiplus, 60A MPPT, 175A alternator and 100A DC loads from one Lynx Distributor.
Will consider the fuse situation and removing the power in and wiring the battery directly to the BMS. I figured I’d need to distributors as 1 would be full with 2 x MPPT, 1 x DCDC and 1 x for 12v things. The Multiplus would be wired into a second distributor (according to the manual it requires 2 x + and 2 x - wires). Thanks for the input.
That schematic shows a Lynx Distributor not Lynx Power In.
Power In was on the left of the BMS.
Use Power-In for batts connections (and Lynx Shunt if you have) and Distributor for MPPT and inverter connections with Mega-fuse protection. If Lynx Shunt is between PowerIn and Distributor you can monitor the fuse status.
Also PowerIn can be tailored inside to accommodate fuses. Do not forget to add power switches on “+” to MPPT and inverter (MultiPlus2) for separation , just on plus , do not use them on minus terminal.
All equipments shall be grounded along with GND terminal from Distributor and Power In.
@fctinescu The OP does not need Lynx Shunt, they are using Lynx NG BMS which has a battery monitor and fuse monitoring built in.
