MarkNiwot
New Member
I have a new (to me) Schweitzer 6848 inverter (and the hundreds of pages of manuals) that will NOT seem to drive the AUX port pins to start a remote generator.
The manuals say pin 4, which I wired (two-wire start to Generac) is an open collector driver, capable of up to 30V Vcc. The controller has a pull-up to 5V, and all it takes to activate the generator is to turn on that driver (ie, pull the output low.) I can do that with a remote switch, which is how I'm having to run the backup generator now.
The menus allow multiple signal sources for that output (I've tried 'em all, and set the voltages, charge states, etc) -- SOC, low battery voltage (either) will suit my purpose, which is to turn on the generator when I get to the point I want the batteries to have help. But I simply can't make that pin change state (including the 'manual on' menu choice.)
I have concluded that EITHER - the inverter aux port isn't working right , OR
-- there's a TRICK hidden in there somewhere to activate/enable something that they aren't telling. Any ideas?
PS> There's (supposedly) a switched 12V output on pin 1 (both ref'd to pin3 ground) - but I can't make that switch either. It just stays at +12V.
The manuals say pin 4, which I wired (two-wire start to Generac) is an open collector driver, capable of up to 30V Vcc. The controller has a pull-up to 5V, and all it takes to activate the generator is to turn on that driver (ie, pull the output low.) I can do that with a remote switch, which is how I'm having to run the backup generator now.
The menus allow multiple signal sources for that output (I've tried 'em all, and set the voltages, charge states, etc) -- SOC, low battery voltage (either) will suit my purpose, which is to turn on the generator when I get to the point I want the batteries to have help. But I simply can't make that pin change state (including the 'manual on' menu choice.)
I have concluded that EITHER - the inverter aux port isn't working right , OR
-- there's a TRICK hidden in there somewhere to activate/enable something that they aren't telling. Any ideas?
PS> There's (supposedly) a switched 12V output on pin 1 (both ref'd to pin3 ground) - but I can't make that switch either. It just stays at +12V.