Operation Of The Electronic Governor - Haybuster H-1130 Operating Instructions And Parts Reference

Figure 2.5
electronic governor
controls
sensor light
range switch
2.9

Operation of the electronic governor

Engine (Auto) mode
IMPORTANT: Except when calibrating or trouble shooting the electronic governor always use the
engine (Auto) mode of the electronic governor.
In engine (Auto) mode, the electronic governor monitors the rotation speed of the tractor's engine. The hydraulic flow
to the tub drive mechanism is regulated in proportion to the tractor's engine speed. As the engine speed slows, the
electronic governor decreases the hydraulic flow which slows down the tub's rotation. Conversely, as the tractor's
engine speed increases, the electronic governor increases the hydraulic flow which speeds up the tub's rotation. This
allows the electronic governor to automatically control the feed rate keeping the tractor's engine running within the
governor's optimum power zone. When the load on the grinding rotor begins to lug the tractor's engine, the governor
automatically reduces the tub's rotation speed in proportion to the load. The result is nearly a constant load on the
tractor's engine, which maximizes the grinding efficiency.
The range of rotor speeds for which the electronic governor will regulate the hydraulic flow is determined by the setting
of the engine load knob. For example, turning the engine load knob counter clockwise will increase the load on the
engine by keeping the tub engaged to a lower engine RPM.
With proper calibration, the tractor's engine will only load down to its optimum horsepower RPM, and the tub's
rotation speed will be varied proportionally to keep the tractor's engine at this RPM.
Tub (Manual) mode
In tub (manual) mode, the electronic governor performs as a simple tub speed control. In this mode the tub speed is
constant and it will not change to match varying load conditions.
engine load
knob
H - 1 1 3 0 T U B G R I N D E R
speed lights fuse light
tub speed knob
O P E R A T I N G I N S T R U C T I O N S
tub mode switch
NOTE: some units may
be labeled automatic and
manual
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