Instruction Manual

25.6V Smart have an integrated Balancing, Temperature and Voltage control (acronym: BTV) and
connect to the BMS connections with two M8 circular connector cable sets. The BTV’s of several
batteries can be daisy chained like in this drawing with 3 connected batteries. When cables are
not long enough, extensions cables are available in several lengths to fit your purpose available
from your Victron dealer. A shunt has been build inside this BMS in the negative connection bus.
This shunt is needed to measure what the charge/discharge current is for all connected batteries.!
The protective part of the BMS for the Li batteries is called ATC (Allow To Charge) and ATD !
(Allow To Discharge) and this happens trough two potential free contacts called ATC and ATD.!
You can see all these connection clearly in the enlarged part of the Lynx Smart BMS in the bottom
left of the drawing. Power for these contacts to control external equipment can be taken from the
Aux positive and Negative power connections trough a fuse.!
ATC for both WS500 regulators has to be connected as follows: Positive power from the Aux +
contact towards a 0.5A fuse. From the fuse to the left ATC contact and from the right ATC contact
to Relay contact COM. From Relay contact NO, the ATC signal go’s to WS500 Port ATC+ and to
WS500 Stbd ATC+ Wakespeed Charge enable/Feature in connections.!
ATD for Smart battery Protect-1/220 and 2/220 has to be connected as follows: Positive power
from the Aux + contact towards a 0.5A fuse. From the fuse to the left ATD contact and from the
right ATD contact to SBP 1/220 and SBP 2/220 H connections.!
Power for the Cerbo has to be connected as follows: from the Aux + contact towards a 1A fuse.
From the fuse to the positive power connection of the Cerbo and from the Aux - contact to the
negative power connection of the Cerbo.!
The Distributor RJ11 cables on the left and right hand side of the BMS have to be connected to
Distributor-1 and Distributor-2 as they provide power to the LED PCB for each Distributor and can
be daisy chained from Distributor 2 to 3. These cables transfer data between the Distributor and
the BMS about each main fuse status. Dip switches in each distributor need to be set properly to
make this work. See settings behind each Distributor header. !
Data at Can bus level to/from the BMS has to be connected to the Cerbo VE.Can port and to the
Wakespeed Can bus connection. The VE.Can cable between the BMS and the Cerbo is a normal
RJ45 cable, but the cable between the Cerbo and the WS500 is a Victron to Wakespeed Cross
over cable. Do not forget to terminate the Can bus system at each end. Only use Wakespeed
terminators for the WS500 as they are different compared to the ones for Victron.!
The ATD contacts of the BMS will stop connected devices from discharging when the Battery
Voltage has decreased below a preset value. (Detailed description as explained above) !
The following Victron devices will be stopped when this happens:!
•
Smart Battery Protect SBP 1/220 and SBP 2/220 both controlling a full Load disconnect of
what is connected to both SBP OUT Connection.!
The ATC contacts of the BMS will stop connected devices from charging to prevent Cell over-
Voltage or a Cell temperature that runs too high. (Detailed description as explained above)!
The following Wakespeed devices will be stopped when this happens:!
•
WS500 Port ATC+ when connected to Charge enable/Feature in connection.!
•
WS500 Stbd ATC+ when connected to Charge enable/Feature in connection.!
Other connected Victron devices in this system also need to be controlled from a charge and
discharge point of view and this can be achieved trough the connected GX device: !
• Quattro Inverter/Charger will be controlled digitally trough the GX device DVCC feature. !
• Solar chargers will be controlled digitally trough the GX Device DVCC feature.!
Lynx Distributor-2 (Dip switch Pos-B)
1. The first fuse position at the bottom of Distributor-2 holds a 400A fuse together with its lower
positioned negative connections for the biggest device in this installation, a 5kVA Quattro
inverter/charger. Keep the distance between Lynx Distributor Fuse-1, Main switch-1 and the
negative Quattro connections as short as possible. Read the Quattro manual carefully to
proceed further. Mind you that 2 negative connections are used here, 1 below Fuse-1 and one
below Fuse-2. !
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