Schneider communication bus power?

Riley

In the winter time, I am currently turning off my inverter and opening the breaker feeding the inverter. 
I am not sure what device powers the schneider 'mod-bus' but i think it looses power even though the charge controller is still powered (from the panels and perhaps some battery draw when no solar output). 

So my question is; what device actually powers the bus? 
If I wanted my schneider com-box to power up and talk to the charge controller, should do that by supplying power to the com-box ? It has a power input terminal. When the system is up, there is no power to the com-box but it works fine. 

I was thinking about rigging up my electronics / communications systems to power up the communications briefly once and awhile with a separate power system (main system is off) and allow me remote access to tweak and monitor what's going on with the system at my remote cabin.  I could even fire up the generator when needed to recharge my batteries.

I guess I am trying to understand where the power for the mod-bus (or xan-bus as I think they call it).  

mike95490

The inverters can power the xanbus.
 SCP cannot.  Gateway can only power itself - I don't think it's wall wart can power a whole xanbus string.
 Charge controllers cannot, because the xanbus would fail at night. 

Riley

ok, so that makes sense that when I turn off the inverter, I lose the bus. 
So sounds like I would need to keep the inverter powered to keep the bus up... ugh

mike95490

When the inverter is in Standby, does the bus shut down ?    Can you place your inverter in standby ?

Dave Angelini

The 150 V mppt can't power xanbus. The 600V mppt's all can power xanbus.

Riley

mike95490 said:

When the inverter is in Standby, does the bus shut down ?    Can you place your inverter in standby ?

I will have to try that Mike. I am not on site now but next time I am back, I will give that a try.