Wiring harness components plug into the 5 connectors in the 2Q BMS:

  1. ""RS485-0"" Connector:  Normally connects to the REC WiFi unit with the cable supplied with the WiFi unit.  As part of this wire harness a spare connector is supplied with pins that an installer can use to connect to, e.g. an industrial RS485 interface in an industrial system.
  2. ""RS 485 CAN T Cp"" Connector with the following wires
    • ""RS 485-1"" no wires on these pins
    • ""CAN"" has a 0.5metre cable to a Weipu Series 13 connector  (note that mostly inverters and controllers use an RJ45 connector for their CAN Bus, however as there is no industry standard pin-out for the RJ45 this leg of the CAN Bus cable is a separate purchase)
    • ""T"" has a jumper wire
    • ""Cp"" no wires on these pins
  3. ""CELLS"" Connector with the following labelled wires with a clean cut at 2metres length (for termination by the installer):
    • 17 cell wires labelled as follows:  ""Cell 1-"", ""Cell 1+"", etc to ""Cell 16+""
    • Power supply wires labelled:  ""Pack -"",  ""Pack +""
    • Pre-charge wire labelled:  ""Precharge""
  4. ""Isens Tsens""  Connector with the following labelled cables each 2metres length
    • DS18B20 digital temperature sensor  x 2 (unlabelled)
    • Shunt sense cable with 4mm lugs with 1 labelled ""+"" that attaches to the battery side of the shunt
  5. ""Power symbol  I/Os"" Connector with 1 metre length cable and wire as follows:
    • Power symbol: Cable to BMS on/off switch
    • I/O wires labelled as follows:
      • ""OPTO RELAY IN"",  ""OPTO RELAY OUT""
      • ""OC 1-"", ""OC 1+""
      • ""OC 2-"", ""OC 2+""