Settings
A BAH0040-9 01.19
41
6.8
Pre-metering prior to startup
Pre-metering is only possible for pneumatic seed drills with full metering functionality.
These machines introduce the seed into the air stream underneath the metering unit immediately after
the tractor starts.
The seed requires a few seconds before it arrives in the coulters and is deposited in the soil. The first
few metres after the machine has started are not sown.
Pre-metering provides a remedy prior to startup.
When the button is pressed to activate the pre-metering function (see "Activate pre-metering",
unterhalb) the metering roller starts to rotate with a simulated tractor speed. The simulated tractor
forward speed can be adjusted (see "Calibration test for implements with full metering", Seite 39).
The seed is dosed into the air stream. After approx. 3 seconds [the time can be set in Mode 8 ()],
when the seed has arrived in the coulters, the driver starts up the tractor.
6.8.1
Start-up ramp
When starting the tractor, the control terminal receives the first pulse. The metering roller then rotates
for approx. 10 seconds [adjustable in Mode 9 ()] at 50% [adjustable in Seite 56 ()] of the simulated
tractor speed and then with the actual values. The simulated tractor speed can be adjusted (see
"Mode 10", Seite 56).
If the actual speed is higher than the simulated tractor speed within the first 10 seconds, the simulated
process will be terminated and operation continues with the actual values.
6.8.2
Activate pre-metering
Press
.
Activate pre-metering
The metering roller motor starts to rotate.
The pre-metering process runs as described (see section "Pre-metering prior to startup", oben).
Observe a waiting period after activating the pre-metering process [the time can be set in Mode 8 ()].
When the seed has arrived in the coulters the driver starts up the tractor.
Summary of Contents for AmaDrill+
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