Genie GS-3384, Service And Repair Manual

Page: 166 / 193

Service and Repair Manual September 2016
Wiring Diagram - 12 kW Hydraulic Generator (option)
154 GS-84 • GS-90 Part No. 1272222
Theory of Operation
1 Turning on the Generator sends a signal to
the ECU which deactivates the function as
long as the generator function is turned on.
In addition, the Generator “on” signal from
the ECU deactivates all other functions, until
that function is enabled, which deactivates
the generator function until the enabled
function is deactivated. Furthermore, the
generator “on” signal from the ECU switches
the engine to high RPM.
2 The SX controller is turned ON supplying
power to the bypass valve and the change
over relay. The EDC valve is switched over
to the output of the SX controller.
1 When the AC generator is turned OFF, the SX
module will ramp the output to the EDC to
threshold preventing cavitation, to the hydraulic
motor powering the generator. When the
threshold is reached, the bypass valve is turned
OFF.
2 The time relay module keeps the SX controller
ON, four additional seconds after the ESTOP is
pressed, allowing for a controller ramp down of
the generator.
Adjustment:
1 Connect a digital multi meter (DMM) with a
frequency counter to the 110V AC outlet. Adjust
the potentiometer until a frequency of 66.5 HZ is
obtained with no load on the generator.