В Protection from operating errors as far as necessary, is possible via electronic protection (programming). В Protection from over-speeds (On the basis of engine and turbine speed). В Automatic reversing (Driving speed-dependent). В Pressure cut-off possible (disconnecting of the drive train for maximum power on the power take-off). В Change-over possibility for Auto-/Manual mode. В 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. (3) - 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. 3-17