3-20
·
Protection from operating errors as far as necessary, is possible via electronic protection
(programming).
·
Protection from over-speeds (On the basis of engine and turbine speed).
·
Automatic reversing (Driving speed-dependent).
·
Pressure cut-off possible (disconnecting of the drive train for maximum power on the power
take-off).
·
Change-over possibility for Auto-/Manual mode.
·
Kick down functions possible.
Driving and shifting
Driving and shifting
- Neutral position :
Neutral position will be selected via the controller.
After the ignition is switched on, the electronics remains in the waiting state. By the position
NEUTRAL of the controller, resp. by pressing the pushbutton NEUTRAL, the EST-37A becomes
ready for operation.
Now, a gear can be engaged.
- Starting :
The starting of the engine has always to be carried out in the NEUTRAL POSITION of the
controller.
For safety reasons it is to recommend to brake the machine securely in position with the parking
brake prior to start the engine.
After the starting of the engine and the preselection of the driving direction and the gear, the
machine can be set in motion by acceleration.
At the start off, the converter takes over the function of a master clutch.
On a level road it is possible to start off also in higher gears.
- Upshifting under load
Upshifting under load will be then realized if the machine can still accelerate by it.
- Downshifting under load
Downshifting under load will be realized if more traction force is needed.
- Upshifting in overrunning condition
In the overrunning mode, the upshifting will be suppressed by accelerator pedal idling position, if
the speed of the machine on a downgrade should not be further increased.
- Downshifting in overrunning condition
Downshiftings in overrunning mode will be then carried out if the machine should be retarded.
If the machine will be stopped and is standing with running engine and engaged transmission,
the engine cannot be stalled. On a level and horizontal roadway it is possible that the machine
begins to crawl, because the engine is creating at idling speed a slight drag torque via the
converter.
It is convenient to brake the machine at every stop securely in position with the parking brake.
At longer stops, the controller has to be shifted to the NEUTRAL POSITION.
At the start off, the parking brake has to be released. We know from experience that at a
converter transmission it might not immediately be noted to have forgotten this quite normal
operating step because a converter, due to its high ratio, can easily overcome the braking
torque of the parking brake.
(3)
(3)
Summary of Contents for HL955
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