Can Bus Wiring - Victron energy Color Control GX Manual

2020-10-30 14:18
11. Lowest probe temperature
12. Battery gross capacity
13. Number of batteries online
All of the above information can be viewed in the Freedom Lite device sub menus on the GX-device.
Specific setup of the GX-device and the MultiPlus/Quattro is required to ensure the required control is
implemented.
If the CAN bus cable is removed or damaged the Victron inverters will shut down within 5 minutes.
This prevents continued operation in the absence of communication from the battery. Likewise, the
MPPT's will stop producing power to the DC bus.
DC Bus Pre-charging
Important: Many installers neglect this aspect.
The inrush current when switching on the battery breaker onto the DC bus is huge. This can cause
damage to the breaker over time. So it is a Freedom Won requirement that the DC bus is pre-charged
before switching on the battery. This is achieved by switching on the AC input to the inverters – the
inverters will use the AC power to pre-charge their capacitors. This will eliminate the huge inrush
current. The MPPTs can also be used for pre-charging by switching on the solar panels supply to the
MPPTs.

CAN Bus Wiring

The connection of the Lite to the GX-device is extremely simple. A standard straight through CAT5e
Ethernet cable is required of the desired length, with one end plugged into one of the RJ45 sockets on
the Lite and the other end plugged into one of the CAN sockets on the GX-device. Note that the
second RJ45 socket in each case must be fitted with an end of line 120Ω resistor. Two are supplied
with each GX-device.
Note: In the case of the Venus GX or Octo GX, if the VE.CAN ports (RJ45) are being used by MPPTs,
the secondary CAN bus needs to be connected using the green terminal blocks. If you require any
information on how to do this, contact Freedom Won support at support@freedomwon.co.za
If multiple batteries are installed in parallel the second RJ45 socket is used to link the next battery in
the line onto the CAN Bus network. The termination resistor is installed in the last battery in the CAN
Bus line. Refer to Lite installation manual for further information.
Correct CAN Bus communication can be verified by observing whether the Freedom Lite battery is
presented in the GX-device list under the name "Freedom Lite".
Victron VE.CAN MPPTs and Freedom Won Batteries
Note: In this section, the reference to "Color Control GX" refers only to that specific model of GX
device and excludes the rest of the range. The limitations described in this section apply only to the
Victron Energy - https://www.victronenergy.com/live/
5/13 Victron & Freedom Won LiFePO4 batteries - Freedom Lite