How to Connect the ShuntMon to the WatchMon Supervisor

ShuntMon works with WatchMonCORE, WatchMonPlus (WM5 & WM7), WatchMon 4 and typically comes in your Starter Kit with a cable labelled “yellow”, connect the cables as per photos below:-

Follow the picture below as the wiring diagram: 

  • Maximum Battery Voltage = 650v DC
  • Current = 500A

ShuntMon can be connected to any WatchMon using the same wiring sequence.

Connection to ShuntMon

Communication 4 pin port:

Pin Colour Function
1 Red Isolated 5vdc supply
2 Green Isolated TX to WatchMon
3 Yellow Isolated RX from WatchMon
4 Black Isolated Ground

Voltage sense 2 pin port:

Pin Colour Function
1 Spare
2 Red Battery Positive

Battery Current terminals

Pin Function
LEFT Battery load - to inverter / charger
RIGHT Battery Neg - from cells

Connection to WatchMon

CAUTION:  The Shunt cable / plug should only be plugged into the 4 pin Shunt connector on the WatchMon.  Plugging into the CMU of the WatchMon instead should be avoided as this will likely damage the device in a non warranty manner.

Terminal strip connections are as follows:

Pin Colour Function
12 Red 5vdc supply
13 Green RX from Shunt
14 Yellow TX to Shunt
15 Black Ground
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