I'm finalizing my design, and already have two EPEVER Tracer 8420AN units planned to handle one string of panels each in conjunction with an LVTOPSUN inverter on a third string of panels with all three connected to a 51.2V, 280Ah LiFePO4 powerwall battery. As I'm studying the manual for the EPEVER units, I see this:
I don't even understand this. I thought the dry contact was for starting a generator. Why would it be connected to the inverter? And why would the Tracer be damaged if this connection does not exist? And if this is the case, how could anyone connect two Tracer units to one inverter in this manner? And, finally, what cable(s) would be used for this connection?
Is this for real?
[EPEVER MPPT Solar Charge Controller User Manual, p. 13]When the lithium battery and the inverter are used together, connect the
controller's (Load) dry contact to the inverter's start-stop dry contact. Otherwise,
the controller may be damaged
I don't even understand this. I thought the dry contact was for starting a generator. Why would it be connected to the inverter? And why would the Tracer be damaged if this connection does not exist? And if this is the case, how could anyone connect two Tracer units to one inverter in this manner? And, finally, what cable(s) would be used for this connection?
Is this for real?