Travel speed sensor
The parameters of the travel speed sensor — pulses, wheel diameter, speed limits, imitation — and what setting the imitation does by itself.
Everything the panel counts — area, rates, deviations — is worked out from the distance travelled. A speed sensor that is out by a tenth makes every other figure on the panel wrong by a tenth. Set its parameters first, then calibrate it (Calibrate the speed sensor).
Open the context menu of the speed sensor as described in Sensor settings. All its parameters need the “Agronomist” level (Enable the Agronomist level).
The context menu also offers “Speed calibration” directly, under “Information”.
| Parameter | What it does | Range |
|---|---|---|
| “Pulses” | The pulse figure of the sensor. Set it before the calibration, which corrects it. | 1 … 1000 |
| “Count period” | How many pulses of the sensor the panel averages the travel speed over; a higher value gives a steadier figure. Acts only on a speed sensor wired to the panel itself. | 1 … 1000 |
| “Diameter, cm” | The wheel diameter. Set it before the calibration. | 10 … 200 |
| “Factor, %” | The drive ratio to the wheel; 100 is a direct 1 : 1 drive. | 1 … 10000 |
| “Seeding criteria” | “Yes”: the alarms of the seed, dry fertilizer and liquid fertilizer sections are raised only while the machine moves. “No”: also while it stands. Hidden, and always “Yes”, in the “Precise” mode and on machines with metering motors or a liquid fertilizer pump controller. | “No” / “Yes” |
| “Min speed, km/h” | Below this speed the home screen shows “FASTER”. 0 switches the check off. | 0 … 99 |
| “Max speed, km/h” | Above this speed the home screen shows “SLOWER”. 0 switches the check off. | 0 … 99 |
| “Imitation, km/h” | A simulated speed. 0 = the real sensor is used. | 0 … 20 |
| “Width, cm” | The track between the two wheels of a two-sensor installation. | 0 … 10000 |
| “GPS”, “GPS internal” | Take the speed from a receiver instead of the wheel. | “No” / “Yes” |
The minimum must be below the maximum, otherwise the panel raises “Error in settings of Min/Max” (Speed sensor alarms).
The imitated speed is also held inside the range the dosing allows: a value outside it is pulled back to the nearest limit as you enter it. While the speed is imitated, the status screen of the sensor shows “IMITATION” in yellow. Working without a speed sensor: Work without a speed sensor.
The status screen
The status screen shows the pulse frequency F= in Hz (with two sensors F1= and F2=) and the two limits in force. See The sensor status screen.
Something your machine does that this page does not answer? Write to support@agriwelt.com — an engineer answers.