Great Plains ADC2250 Operator Manual - Manual (Page 54)

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Section 7 Specifications and Capacities
Model 2250 Air Drill Cart 167-033M 7/28/10
Great Plains Mfg., Inc.
Vansco Electronic Monitor Technical Specifications (con’t.)
Ground Speed Ground speed in either MPH or KPH is displayed when the selector switch is set to SPEED. (KPH is
obtained by selecting metric units when in width mode.)
Ground speed calibration may be adjusted by changing the pulses per mile setting.
Normal speed is 2.5 MPH to 25 MPH. The display is to one decimal place.
When displaying KPH, the decimal point will flash.
The speed is sensed for a reed switch on the clutch drive shaft.
A short double beep is given when the monitor detects the loss or resumption of the ground speed
signal. Loss of ground speed signal is defined as 2 MPH.
Pulses per mile are variable from 500 to 9999.
The monitors are factory programmed with pulses per miles set to 720. NOTE: When the pulse rate
is set to low values, the accuracy of the area calculations and ground speed will be degraded, and
the rate at which the area and speed is updated will be decreased.
Pulses per mile for a 45’ unit is 2900.
Pulses per mile for a 34’ unit is 2213.
Area Meter Accumulated or Field areas are displayed when the selector switch is set to AREA. The value displayed is
the area accumulated since the last resetting. In either acres of hectares. (Hectares units are obtained by
selecting metric units when in width mode.
Field Area is displayed on 0.1 acre or 0.1 hectare increments.
Accumulated Area is displayed to the nearest acre or hectare.
When displaying hectares, the decimal point will flash.
The field and accumulated area is stored in nonvolatile memory to a maximum of 999.9 and 9999 acres
respectively. The display then rolls over and begins again from 000.000 (0000). When displaying area in
hectares, the display will roll over at 404.7 (4047) HA, which is the metric conversion of 999.9 (9999) acres.
The operator should note that the area accumulation accuracy depends on a number of variables
such as overlap, turns on the head lands, and unclutching the ground drive. The monitor assumes
there is no overlap when making calculation. If the operator experiences area readings that are per-
sistently high, it is suggested that a false implement width be entered. This width would have to be
determined by experience, trial, or calculation.
Implement Width Implement width is displayed when the selector switch is set to WIDTH.
The factory default setting is 40 feet. The width may be adjusted with the UP and DOWN buttons.
The range is 0 to 100 feet in 0.1 foot steps. (When in metric mode the default setting is 12.1 meters,
and the range is 0 to 30.4 meters in 0.1 meter steps.)
Settings are stored in nonvolatile memory.
Reset width to 45’ (13.7 meters) or 34’ (10.4 meters) depending on unit size.
Grain Flow Monitor Option The unit monitors up to 120 flow sensors using External Blockage Modules. The modules signal the monitor
for loss of flow in any run. Blockage is indicated by module number and run number flashing on the display.
Vansco Electronic Monitor General Electrical Specifications
The monitor operates from 12 VDC nominal, 8 V minimum, 18 V maximum.
It withstands 24 V transients for one minute maximum, and reverse voltage until the fuse blows. Use the
correct size fuse (3 amp F.B)
IMPORTANT: Installing an incorrectly sized fuse could result in permanent damage to monitor, and void
the warranty.
The monitor is not damaged by electrical noise such as radio transmissions, load dumps, inductive switch-
ing, alternator field decay, and static electricity in plastic pipes.
Operating temperature range is from -10˚ C to +40˚ C.