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4. Set MAXIMUM WORK HEIGHT to desired value.
5. Press SET and then press ENTER.
5.1.16 Sensor Operation
The position sensors supplied with auto header height
control (AHHC) system are 1000 ohm (1 k) industrial series
sensors containing sealed connectors. Normal operating
signal voltages for sensors fall between 10% (0.5VDC) and
90% (4.5VDC).
•
A sensor operating with a signal voltage below 5% is
considered to be shorted
•
A sensor with a signal voltage above 95% is considered
to be open
An increase in sensor voltage correlates to an increase in
header height.
Each sensor is constructed with a power wire and a ground
wire. Inside sensor, these two wires are connected by a
high resistance filament band (C). The resistance measured
across power (A) and ground (B) wires should read a
constant value between 800 and 1200 ohms (0.8–1.2 k)
with nominal reading being 1000 ohms (1 k).
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SETTING UP AUTO HEADER HEIGHT CONTROL
Figure 5.286: New Holland Combine Display
Figure 5.287: Power, Ground, and Signal Wires
270
Revision A
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