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I have a SmartSolar MPPT 100/30 which I am attempting to control remotely using the relay on a BMV 702.
In the online manual Item 5.2.5 states the following;
Remote on/off:
This is the default setting. This functionality will switch the solar charger on or off via the RX pin.
- RX pin to GND will switch the solar charger off.
- RX pin floating or to battery positive will switch the solar charger on.
However this does not appear to work, when I short Gnd-Rx nothing happens?
Have you used the VE.Direct non inverting remote on/off cable as per the manual instructions.
Thanks for your reply.
My intention was to use the relay on the BMV to control the ON/OFF state of the MPPT, would the Remote ON/OFF Cable be able to convert a relay input from the BMV into a logic input for the MPPT?
In the mean time I have used the BMV relay to control a relay which will cut off solar input thereby accomplishing the task, but I would much rather be using the logic than a failure prone high current relay,
My intention was to use the relay on the BMV to control the ON/OFF state of the MPPT, would the Remote ON/OFF Cable be able to convert a relay input from the BMV into a logic input for the MPPT?
Yes, if you supply 6-70v to the relay, to supply + signal to the yellow lead of the VE direct non invert cable.
I use my BMV's relay to provide OVP and UVP for my battery, combined into my basic BMS.
I would much rather be using the logic than a failure prone high current relay,
Makes sense.
