Control systems
The two control systems, CTR101 and CTR201, have functions to control the driving
mode in 2WD and 4WD applications.
CTR101 control system is applicable to all tractors. It provides driving functions that
you can activate with the system display. It can also automatically switch the system
to freewheeling mode if the working pressure drops due to increased driving speed.
CTR201 control system is applicable to tractors that have the ISOBUS implement
connector. It has automatic functions that use the tractor's speed and direction
information to make the operator’s work easier. If necessary, manual operation of the
system is also available.
Working principle
The Black Bruin On-Demand Drive System can use hydraulic motors in the operating
modes that follow:
• Driving mode
• Driving mode with HDC function (Hill descent control) (option)
• Freewheeling mode.
The chapters that follow give the working principles of these modes.
Driving mode
In this mode the motors help the vehicle to move in the direction of travel. You can
adjust the tractive power level to the driving conditions. The power level stays
constant also if the speed changes. When the tractor brakes the system reduces the
working pressure to the minimum level and the hydraulic motors do not have tractive
power.
2-speed hydraulic motors give wider speed range for the hydraulic drive.
If the vehicle wheels slip, the assisting traction control ATC increases the torque on
the wheels that have more traction.
Typical situations to operate in the driving mode are:
• Driving up steep slopes
• Moving rearward on steep slopes
3.2
3.3
3.4
Product description
8
Product manual
