Standen ZENO 21, Manual

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Hopper Belt Speed and Delay
The hopper belts should move slowly, just enough to keep the singulating belts
supplied with a manageable quantity of seed. Achieving the correct speed and flow is
a matter of trial and error.
Press the icon . Using the yellow arrows, scroll until the ‘hopper belt speed’
screen is displayed (see fig 52). Increase / decrease the speed using the + and –
icons. Alternatively, press the digits to display a keypad. Always start slowly and very
gradually increase the speed.
The STOP delay is determined by the movement of the seed on the singulating belts.
The delay should normally be set at 0.5 seconds but can be adjusted as follows.
Press the icon . Using the yellow arrows, scroll until the ‘hopper stop delay’
screen is displayed (see fig 57). Increase / decrease the delay using the + and –
icons.
Singulating Belt Speed and Delay
The singulating belt units consist of a fast belt and a slow belt arranged in a V-format.
The speed of the belts is controlled by the speed of the trough belt below (i.e. when
the trough belt speeds up or slows down so do the singulating belts).
The speed ratio between the trough belt and the singulating belts is adjusted as
follows.
Press the icon . Using the yellow arrows, scroll until the ‘singulation fast belt
ratio’ screen is displayed (see fig 53). Press the digits to display a keypad (for fine
adjustment use the + and – icons). Initially, set the ratio to 1.00 (i.e. 100%). This will
set the fast belt speed to be the same as the trough belt speed. Gradually increase
the speed just enough to keep the trough belt supplied with seed.
The speed of the slow belt is proportional to the speed of the fast belt (i.e. when the
fast belt speeds up or slows down so does the slow belt). The action of the fast and
slow belt sorts the potatoes into a continuous, single line. To achieve this the ratio
between the fast and slow belt is adjusted as follows.
Press the icon . Using the yellow arrows, scroll until the ‘singulation slow belt
ratio’ screen is displayed (see fig 54). Press the digits to display a keypad (for fine
adjustment use the + and – icons). Initially set the ratio to 0.50 (i.e. 50%). This will set
the slow belt to run at half the speed of the fast belt. If necessary, adjust the ratio to
correctly singulate the potatoes.
The singulating belt units have an adjustable START and STOP delay. The START
delay should normally be set at 0.1 seconds giving a minimal delay.
Press the icon . Using the yellow arrows, scroll until the ‘singulation start
delay’ screen is displayed (see fig 55). Increase / decrease the delay using the + and
– icons.
1.23 OPERATION