Leica MOJO RTK Administratorhandbuch
For more information
www.mojoRTK.com
Page 1/5Document #1034 rev1.3
HOW TO GUIDE: Using mojoRTK with a QuickSteer
steer assist motor
Description
This document describes how a Leica mojoRTK system can be set up and
used with a Leica QuickSteer steering motor. The intended audience is Leica
approved Value Added Resellers and end users of the Leica mojoRTK system.
Benefits
Using the Leica mojoRTK system with a QuickSteer motor allows auto-steer
capabilities to be added to a wide range of vehicles that do not have factory
installed steering kits. The mojoRTK and QuickSteer can be moved between
vehicles, allowing a single system to be used for multiple vehicles.
Limitations
A steering motor cannot provide the same level of accuracy as a hydraulic
system. However, a steering motor does provide a cost effective, easy to
install and versatile steering solution.
For applications that require a high level of accuracy, the QuickSteer is not
recommended. For high accuracy the Steer Ready Kit (SRK) hydraulic
solution is the preferred option.
Required Items
mojoRTK system kit – For information regarding this system and the
latest software versions, please visit www.mojoRTK.com
QuickSteer steering motor kit – This includes the motor, a universal
mounting bracket and the required cables. The Leica Geosystems part
number for the steering motor kit is 676087.
Installation
Install the QuickSteer motor as per the installation instructions.
Install the mojoRTK system in the vehicle as per the standard mojoRTK
user manual.
For more information
www.mojoRTK.com
Page 2/5Document #1034 rev1.3
Configuration
When the mojoRTK console starts up for the first time it will start a
configuration sequence designed to guide you through the initial setup of
the console.
The mojoRTK user manual explains the standard configuration settings for
the mojoRTK console (refer to the section ‘Running the mojoRTK Console for
the First Time’).
This part of the guide refers to the selection of the Leica Geosystems
QuickSteer kit and its setup for use with the mojoRTK console.
1. Once you have reached the vehicle type section of
the setup sequence you need to select
‘QuickSteer’ as the vehicle type. Press OK to
confirm the selection.
2. A status screen will be displayed which indicates
the status of the CAN bus and the QuickSteer. If
the message indicates that there is a problem,
check the cables and connectors and ensure that
the QuickSteer is powered up.
3. If it is the first time you have set up the
QuickSteer or you are changing from another
steer kit then you will be prompted to perform a
steering adjustment procedure. Press OK to
continue.
4. Proceed through the remaining setup wizard stages following the
prompts on screen and the instructions in the user manual.
For more information
www.mojoRTK.com
Page 3/5Document #1034 rev1.3
5. If steering adjustment is required then a screen will be displayed warning
the user to first detach any implements before proceeding. Press OK
when there is no implement attached to the vehicle.
6. A screen will be displayed telling the user to
engage the QuickSteer motor against the steering
wheel. Once this has been done press OK to
continue.
7. The user is then prompted to start driving the
vehicle. Select an appropriate gear in a fairly flat
open location with a clear view of the sky as
GPS is required for this step. Press OK when you
are ready to continue.
8. The system will then ask the user to turn the
steering wheel full lock to the left. Once this is
done press OK. The system will then determine
the adjustment required for steering left. Keep the
wheel at full lock left until the stage completes.
9. When the left adjustment is complete, follow the on-screen instructions
to repeat step 8 for the right adjustment.
10. The next step requires the steering to be centred.
It is recommended to try and get the nose of the
tractor to aim at the same place while completing
this stage. It does not have to be perfect but the
closer it is to the centre, the better.
11. A screen will then be displayed stating that the
steering adjustment is complete. Press OK to
continue.
For more information
www.mojoRTK.com
Page 4/5Document #1034 rev1.3
12. The next step is to set the freeplay value, which
takes into account any movement of the steering
motor that does not cause the vehicle’s wheels to
move. While you are changing this value the
QuickSteer motor will operate, changing directions
every few seconds.
Note: the larger the value you set, the more the
motor will move. Increase the value until the
vehicle’s wheels twitch slightly. Press OK when
you are satisfied with the setting.
13. Once the freeplay setting is set the steering setup is complete. It is
recommended to check the control tuning at this point. See the mojoRTK
Tuning Guide for more information on tuning.
Custom Steer Kit Parameters
The QuickSteer steering motor has a number of settings for optimising the
performance.
To access the QuickSteer settings via the mojoRTK
console, press OK from the navigation screen to
enter the main menu and select:
Settings->Vehicle->Steer Kit Wizard
If the ‘Steer Kit Wizard’ option is not present, there is a communication
problem between the mojoRTK console and the QuickSteer. Enter the
‘Vehicle Wizard’ and proceed until you reach the ‘Vehicle Type’ screen and
ensure that ‘QuickSteer’ is selected, as described in the Configuration
section above.
If problems persist, check that the steering motor is powered and that
the CAN bus cables are connected between the console and the steering
kit.
The settings available in the QuickSteer Steer Kit Wizard are ‘Minimum
Motor Speed’, ‘Override Sensitivity’ and ‘Maximum Motor Speed’.
For more information
www.mojoRTK.com
Page 5/5Document #1034 rev1.3
The ‘Minimum Motor Speed’ adjusts the minimum
speed at which the motor will be moved. If the
motor is trying to move the wheel, but the wheel
isn’t turning increase this value. If the motor is
moving too fast and overshooting past the
desired turning position, decrease this value.
The ‘Override Sensitivity’ adjusts how sensitive
the QuickSteer is to the operator overriding the
auto steer controls.
The ‘Maximum Motor Speed’ adjusts the
maximum speed at which the motor will move.
This should be decreased if the motor
consistently moves too fast and overshoots the
desired tuning position.
When setting one of the settings in the Steer Kit Wizard, use the main
dial to adjust the value. When you are satisfied with the setting value,
press OK to save the value and continue to the next setting. Press Escape
to undo any changes and return to the previous screen.
Steer Kit Information Menu
The Steer Kit Info menu is available to Leica approved
Value Added Resellers in the Dealer Menu. This menu
provides a quick method of viewing QuickSteer
details including firmware version and current
encoder position.
Glossary
Base The source of the correction signals for the RTK solution.
May also referred to as: base station, reference station
and network reference station.
CAN Controller Area Network, the communication bus used
between the mojoRTK console and the steering kit.
Console The mobile receiver installed in the vehicle.
QuickSteer Steering motor from Leica Geosystems.
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3
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