Emergency Operation; In An Emergency Situation; Operation When A Sensor Fails - Hardi ISOBUS VT Operator's Manual

Emergency operation

In an emergency situation

If an error occurs in the system then choose Computer CAN status. This
test will show if there is communication between the units. The menu
will be as shown.
ATTENTION! See also "Menu 4.7 Emergency" on page 8.3.

Operation when a sensor fails

When one of the sensors for RPM, flow or pressure fails, the system will work in a limp home mode with reduced, though
acceptable, performance. One of the alarm ID's between 140 to 147 will be triggered in the controller display. See also "Fault
codes" on page 11.5.
• In the auto mode, the system will not work with 2 failing sensors, hence the operator should repair the failing sensor
as soon as possible.
• The pressure regulation can use both wheel speed sensor on trailer and GPS speed via ISOBUS.
÷
NOTE! SafeTrack only works with wheel speed sensor.
Pressure regulation angle sensor works both as a feed back to the computer and as the end stop switch. If angle sensor fails,
the operator can continue turning regulation valve past the completely closed position.
Failure in the sensors below will cause an inaccurate calculation of the volume rate when spraying. In order to be able to end
a spray job when a sensor fails, do the following:
RPM Flow Pressure
Use Use Use
Defect Use Use
Ignore Defect Use
Defect Defect Use
Ignore Use Defect
Defect Use Defect
Use Use Use
Ignore Defect Defect
Ignore Ignore Ignore
Speed Valve angle Mode for regulation
Use Use Full performance
Use Use Reduced performance
Use Use Reduced performance
Use Use Reduced performance
Use Use Reduced performance
Use Use Reduced performance
Defect Use Spray at constant speed
Ignore Use Manual only
Ignore Defect Manual only. Regulation valve can
pass end stop. I.e. when continuing
after it was closed, it opens again.
11 - Fault finding
Extra actions for operator
None
None
Setup new size when changing nozzle, see "Menu
3.4.3 Nozzle size flow at 45 psi" on page 7.10.
Setup new size when changing nozzle, see "Menu
3.4.3 Nozzle size flow at 45 psi" on page 7.10.
Setup new size when changing nozzle, see "Menu
3.4.3 Nozzle size flow at 45 psi" on page 7.10.
Setup new size when changing nozzle, see "Menu
3.4.3 Nozzle size flow at 45 psi" on page 7.10
Keep sprayer at constant driving speed.
Type in simulated sprayer speed, "Menu 3.4.2
.
Simulated speed value" on page 7.9
Adjust pressure after mechanical pressure gauge.
Adjust pressure after mechanical pressure gauge.
Check for passing end stop of valve.
Compensate for sections change.
11.15