Diagram

Engineering Application Bulletin
Atkinson Electronics, Inc.
www.atkinsonelectronics.com
EAB #4m
OUTBACK INVERTER W/ HONDA EB6500 GENERATOR WIRING DIAGRAM May 12, 2006
The GSCM-mini wiring connections for Honda’s EB 6500 portable generator. Based on the electrical diagram
found in the owners manual, the GSCM-mini should be configured for momentary start (terminal 6 has no
connection)and should be wired in parallel with the Combination Switch (Off/On/ Start) . The combination switch
should be left in the ON position for the generator to be started by the GSCM-mini and the Outback Inverter. The
above diagram shows the combination switch, it’s connects made in the three positions, it’s connector and wire
colors. The GSCM-mini’s K1 (start) relay contact is wired to the ST (Black/White)and BAT (White) wires. The
GSCM-mini’s K2 (shutdown) relay contact is wired to E (Green) and IG (Black) wires. When the Outback Inverter
calls for the generator to run it passes a start signal to the GSCM (terminals 5&7), the GSCM-mini then begins
it’s starting sequence by energizing K1 for 20 seconds . The generator begins cranking, as it is cranking it powers
its own electronics (ignition, auto throttle circuit) and begins producing an AC signal. The GSCM monitors the AC
output and when the AC Hz exceeds the crank disengage threshold the K1 (start) relay is de-energized. When
the Outback tells the GSCM to shutdown the generator by removing it’s 12V signal, the GSCM begins it’s
shutdown routine (see GSCM-mini data sheet for description of routine) K2 is energized grounding the
generator’s Ignition coil as if the combination switch had been turned off causing the generator to shutdown. If
generator has problems shutting down, a 12VDC DPDT shutdown relay may needed to ground both the Ignition
and the Fuel Cut Solenoid, see wiring diagram on next page.