- Agricultural Tractors:
- Challenger 35 (PIN: 8DN; 8RD; ADK)
- Challenger 45 (PIN: 1DR; ABF; 3BK)
- Challenger 55 (PIN: 7DM; 6NN; AEN)
Reference: Special Instruction, REHS0566, "Installation Procedure for Slip Limit Override Control"
Description of Change: The software has been updated for Challenger Row Crop Tractors. The changes add several new features, which are described in the following sections. Table 1 shows the revision numbers for the new software. This new software must be used together in order for the modules to function correctly.
Adaptable To: The updated software is effective with Challenger 35 (PIN: 8RD78; ADK332), Challenger 45 (PIN: ABF129; 3BK377), and Challenger 55 (PIN: 6NN192; AEN511) Agricultural Tractors. The updated software is adaptable to all earlier Row Crop Tractors. All modules must be flashed with the latest version in order for all new features to be available.
| Software | |
|---|---|
| Module | Version |
| RHC | 3.30 |
| EMC | 6.80 |
| ETC | 5.50 |
| EDC | 6.30 |
Summary of Changes to Software
Slip Limit Override for Three-Point Hitch
This feature can be used to select a maximum percentage of track slip before the three-point hitch raises. When the track slip is again below the preset value, the hitch will return to the working height. The slip limit range is 8 to 20 percent. A new potentiometer on the right hand console sets the slip limit value.
In order to use the slip limit feature, additional parts are required. See the special instruction that is referenced at the beginning of this article for instructions on installation.
Calibration Constant for Radar
The operator can now reset the internal calibration constant for the radar. Previously, if the internal constant was set too high the Chassis Control Module (CCM) would not allow a successful 122 m (400 ft) calibration. The internal constant will now revert to the factory nominal value upon the start of the 122 m (400 ft) calibration. Upon completion of the calibration, the calibration constant for the radar must be within 12.5 percent of the factory nominal setting. The factory nominal setting is 744 mm (29.3 inch). The operator is notified of the "failure to calibrate" by a flashing "READ MANUAL" icon (open book) and "CAL" icon on the Electronic Monitoring Center (EMC).
Overspeed Alarm for Power Take-Off (PTO)
The overspeed alarm for the PTO will sound and the light for an engaged PTO will flash when the PTO goes into the first overspeed condition. Only the light for an engaged PTO will flash for each additional occurrence of an overspeed condition. Previously, the overspeed alarm would sound for every occurrence of an overspeed condition.
Area Accumulator
The function of the area accumulator has been significantly improved. Previously, the three-point hitch overrides the implement status switch (ISS). By using the new software, the operator can select a value for the threshold in Mode 1 by using the EMC. The area accumulator will accumulate information from one of three source. The source depends on the value that was used for the threshold. The settings are listed in the following table:
| Operation of Implement Status Switch | |
|---|---|
| Hitch Position | Source of Input |
| 0 percent | START/STOP switch |
| 1 to 98 percent | Three-point hitch position sensor (1) |
| 99 percent | Implement status switch (ISS) (2) |
| ( 1 ) | The source of the input will be from the three-point hitch position sensor up to the height limit setting. |
| ( 2 ) | If the height limit setting on the hitch is lower than the value for the threshold, then the value for the threshold will default to the height limit setting. The hitch must also be enabled. Pushing the reset button in Mode 1 will reset the value to zero. |
Note: You can press the START/STOP switch in order to override the default actions in any situation.
Miscellaneous Feature Enhancements
Display Units
Three options are now available for display units.
- The English option contains all of the English units.
- The Metric option contains all of the Metric units.
- The UK MPH option will contain all of the metric units with the exception of KPH which will be displayed as MPH.
Note: Hold the "E/M" switch for three seconds in order to toggle these display options.
Detection of Hardware
The software will read the change level of the hardware. In addition, the software will determine the chip that is installed in the hardware. This feature is needed for future design changes to the hardware.
Display for Elapsed Time
A feature for elapsed time that uses the mm.ss format with a minimum of 00.00 and a maximum of 99.59 is now displayed with the "Hour" symbol. You can use the feature for elapsed time as you would use a stopwatch.
To use this feature, push the "SETUP/SELECT" button until "hour" appears on the dash. Use the "START/STOP" button in order to start and stop the timer.
Note: To reset the timer, hold the "START/STOP" button for three seconds.