Incremental encoder
The electrical connection of an incremental encoder is described in the chapter
Connection of the goods scanners. The programming is described in the chapter
Testmode. Now the mechanical attachment of the conveyor to the encoder will be
described.
If the speed measuring is done by an incremental encoder, the measured speed can be
fine adjusted by ±10 % with the SPEED potentiometer. The DATA HOLD switch only
stores the potentiometer setting. The dispensing speed will follow the product speed.
Figure 18 shows an example how to calculate the step width:
1: 200 / turn
2: d = 100 mm
Figure 18: Incremental encoder
Example:
Step =
The step width must be in between 1.00 mm and 9.99 mm. For small distances betwe-
en the products, the stepping rate must be as small as possible. 2 mm are a good
practice value.
The minimum dispensing speed is 3 m/min, the maximum speed is 30 m/min. If no
incremental encoder is attached to the dispenser or if the conveyor is stopped, the
dispensing speed will be 3 m/min.
Remark:
The minimum distance between two products is equal to 6 times the
step width.
Remark:
The dispensing speed is captured at the moment of the detection of the
product. At this moment the dispensing speed will not change until the
label is completely dispensed !
d
1
2
=
=
314mm
200
d * Pi
Pulse
1.57mm
5999.527-01A 25.11.98 WM Seite 26 / 32
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