Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Rise in Turf Encountered<br />
During sprayer operation with the sonic boom switch in<br />
the automatic position (sonic boom light is illuminated),<br />
the boom mounted sonic boom sensors continually<br />
send impulse signals and then receive echos as the signals<br />
bounce off the turf. The electronic control unit<br />
(ECU) determines the sensor distance from the ground<br />
based on the time between the sensor signal generation<br />
and the received echo. As long as the sensor height remains<br />
the same as the calibrated height, the spray<br />
boom section will remain at a fixed distance from the<br />
ground for spraying accuracy.<br />
When a spray boom section encounters a rise in the turf,<br />
the time necessary for the sensor to receive the signal<br />
echo is shorter than the calibrated timeframe. This<br />
change in time causes the ECU to energize the appropriate<br />
power switch relay and H--bridge relays.<br />
These energized relays provide a current path to the<br />
boom actuator causing the actuator to retract and the<br />
boom section to raise. This maintains the boom height<br />
at the calibrated distance from the ground. Once the<br />
boom section is raised to the calibrated distance, the<br />
elapsed time between the sensor signal generation and<br />
the received echo returns to the correct timeframe and<br />
the boom stops raising.<br />
The boom sensor target distance is initiated during initial<br />
sonic boom calibration and is typically set at twenty (20)<br />
inches. When in automatic mode, the booms will not<br />
move if the target distance change is three (3) inches or<br />
less (inner dead band). Once the target distance exceeds<br />
five (5) inches (outer dead band), the ECU will energize<br />
the appropriate power switch relay. The<br />
energized relay will lead to a change in boom actuator<br />
length and ultimately a change in boom height.<br />
Sonic Boom<br />
System<br />
A LOWER BOOM HEIGHT IS DETECTED<br />
SO ACTUATOR RETRACTS TO RAISE BOOM SECTION<br />
RISE<br />
Figure 5<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>--D Page 7.1 - 11 Sonic Boom System (Optional Kit)