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8 Operation in general
8.6.2 AUTO control system with material sensor
Function
Switching on
Display
Switching off
A material sensor mounted above the conveyor measures the distance
up to the material conveyed by the conveyor.
In AUTO operating mode, the control system's objective is to keep this
distance constant so that sufficient material is always available in front of
the screed.
To achieve this, the actual value measured by the sensor is constantly
compared with the input nominal value. The difference between these
two values is the so-called control variance.
The conveyor is actuated proportionate to the calculated control
variance.
This mode is activated by pressing the AUTO button.
The green function LED integrated into the button indicates to the user
that this mode is currently active.
Activation of the auto mode additionally ends any manual mode which
may previously have been active.
The nominal value can be changed using the "+" and "-" buttons.
The display only switches automatically to the conveyor window when
the +/- buttons are pressed.
When the auto button is pressed, no display appears.
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12
Menu symbol
Operating mode
Sensor measured value
Nominal value
F3 ends the display
The AUTO button is pressed again for deactivation.
Activating the manual mode also ends AUTO mode.
The green function LED in the button is off.
