Cable Connection Sequence; Can Bus Interface - Victron energy SmartSolar MPPT RS 450 100 Manual

Figure 2. MPPT RS PV example diagram
11 x 270W 60 cell panels in
series – 418 Voc
418V and 304V DC PV Distribution

3.5. Cable connection sequence

First: Confirm correct battery polarity, connect the battery.
Second: if required, connect the remote on-off, and programmable relay, and communications cables
Third: Confirm correct PV polarity, and then connect the solar array (if incorrectly connected with reverse polarity, the PV voltage
will drop, the controller will heat up but will not charge the the battery).

3.6. Can bus interface

The solar charge controller is equipped with two VE.Can bus RJ45 sockets.
The CAN bus on this charger is not galvanically isolated. The CAN bus is referenced to the minus battery connection.
The CAN bus interface will be referenced to ground if the minus pole of the battery is grounded. In case of a positive grounded
system, a CAN isolation module will be needed to reference the CAN bus interface to ground. The end of a CAN cable should
have a bus terminator. This is achieved by inserting a bus terminator in one of the two RJ45 connectors and the CAN cable in the
other. In case of a node (two CAN cables, one in each RJ45 connector), no termination is needed.
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Isolated SmartSolar MPPT RS
8 x 270W 60 cell panels in
series – 304 Voc
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Installation