16
15 Optional GPS Kit
Part No. TJ-004-GPS-KIT
If the machine is not being used with this GPS speed sensor –
this operation will not be necessary as the
machines will operate at a fixed output to match a fixed forward speed and this speed must be maintained – this
is the speed used in the calculation – it will
NOT
be speed proportionate metering.
NOTE
- This calibration can only be done after the application rate has been set as described on pages 20-21
It will not work if it is done prior to calibrating the machine.
This speed calibration is done in the field, on the move at the same speed used in the application rate calcula-
tion, and the small white circular GPS receiver mounted on the top of the LHS Fan Jet chassis will register the
actual forward speed, and the VS-2 will then match the rate to the speed.
PROCEDURE
1.
Set the main power ON/OFF – disc ON/OFF switch (
E
) to the lower ON position
2.
Set the feed motor switch (
A
) to the mid OFF position – not spreading for this calibration
3.
All other switches and dials are positioned where they are following the application rate calibration
4.
Ensure that both green and red LED’s are showing on the Black inline Satspeed2 box that is positioned on
the rear upright of the LHS chassis – a solid green LED indicates that the GPS receiver has power and a solid red
LED indicates it is receiving signals from GPS satellites
5.
Drive forward and accelerate until the “calibrated speed” is reached – indicated using the vehicle speedome-
ter or radar or GPS – this is the speed used during the catch and weigh test – maintain this speed and press and
hold upwards the spring loaded toggle switch (
A
) until two solid green LED and one solid red LED appear, and
you will hear an audible alarm to indicate that it has calibrated successfully.
6.
Release the switch
The VS-2 has now registered the signal from the GPS receiver at this speed and now knows that it has to bal-
ance the signal from the feed motor (established during the catch and weigh test using this same speed as the
target field speed) to the signal from the GPS running at this actual field speed – from now on it will maintain
the proportion between the two. If for any reason it cannot do this – an alarm will sound and a red LED will
light – for example, this could happen if the feed motor needs to run faster as the forward speed increases, but
the motor is at the limit of its performance and cannot increase RPM further. This example is when a change of
feed rollers needs to be considered to meter more grams per revolution to allow the motor to run slower for the
same application rate.
Once this Speed Calibration is done, your machine is ready for work and will operate at varying forward speeds
maintaining your calibrated application rate. Providing
all LED displays are green
and the alarms silent in
normal work – everything will be working correctly. If the feed motor cannot achieve the required speed to
maintain the rate, an alarm will sound and a red LED will light.
If the application rate or disc speed is changed whilst on the move by increasing or decreasing the feed or disc
motor speeds using the appropriate dials – a rapid pulsed red LED will light and the alarm will sound to remind
you that the original settings are changed and will remain on until they have been returned to the original
setting.
Turn the feed motors ON and OFF as required using toggle switch (
A
) using only the mid to low position – not
the spring loaded upper position. This will start and stop both Fan Jets together unless you have chosen to
switch off one side or the other using the independent LHS/RHS feed control switch.
If a new product calibration or target field speed is needed, then this speed calibration will need to be repeated.
NOTE. when calibrating for a new application rate, or a new forward field speed – first disconnect
the main power cable to the Turbo Jet for at least 10 seconds – this will cancel the memory of previ-
ous calibrations and allow new settings to be used.
For best results and to avoid over applying product we recommend the
machine is fitted with this optional GPS Kit as this will give speed
proportionate metering of pellets, maintaining the pre-set application
rate in line with forward speed changes – if the system is not able to
maintain the rate, it will alarm and alert the operator.
WARNING
this GPS kit must be used as the control system is
not designed to work with the signal generated from a standard GPS
receiver or Ground Speed Radar.
Summary of Contents for Fan Jet Duo Plus VS-2 130
Page 23: ...23 22 Parts drawing...
Page 30: ...30 29 Notes page...
