Assembly and function
44
Cirrus 3/4/6000 DB2034 08.04
4.5 Vario gearbox
For setting the seed rate the setting motor (Fig. 56/1)
adjusts the gearbox setting lever (Fig. 56/2).
The seed rate can be set infinitely variably via
. The seed rate is read off at the
pointer (Fig. 56/2) of the scale. The higher the scale
value, the bigger the seed rate will be.
The desired seed rate is entered into
and re-checked with the aid of calibration tests.
Fig. 56
4.6 Full electric metering system (Option)
With the full electric metering system each one electric
motor (Fig. 57/1) drives a metering roller.
The forward speed and the pre-set seed rate
determine the drive speed of the metering roller. The
star wheel determines the operational speed and the
travelled distance.
The seed rate is infinitely variably set via
.
The drive rev. speed of the metering roller
• can infinitely be set via .
• determines the seed rate. The higher the drive rev.
speed of the electric motor, the bigger the relevant
seed rate will be.
• automatically adapts to the changing forward
speeds.
Fig. 57
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