Function; Advantages; Standalone Operation - Leuze electronic BPS 37 Technical Description

Leuze electronic
3.3

Function

The BPS uses visible red laser light to determine its position relative to the barcode band.
This essentially takes place in three steps:
1. Reading a code on the barcode band
2. Determining the position of the read code in the scanning area of the laser beam
3. Calculating of the position to within a millimetre using the code information and the
code position
The position value is then passed on via the standardised SSI interface (synchronous serial
interface) to the drive system of the vehicle for which the position is to be determined.
3.4

Advantages

• Easy installation and commissioning
• Teach function for the "zero point", i.e. it is not necessary to exactly affix the barcode
band.
• Data output via SSI interface; BPS can be connected instead of a conventional rota-
tion encoder.
• The function of the BPS makes it possible to attach the barcode band only at those
locations where it is necessary that the position be known exactly.
• Positioning of non-linear movements as well
• No referencing necessary following voltage drop
• Thanks to the large scanning depth, it is possible to compensate for mechanical toler-
ances.
• It is possible to exactly determine positions from distances of 10000 metres.
3.5

Standalone operation

The barcode positioning system BPS 37 is operated as a single "stand alone" device. The
BPS features a 15-pin sub-D connector for the electrical connection of the supply voltage,
the interface and the switching inputs.
With connection units
The connection units simplify the electrical installation of the barcode positioning system in
stand-alone operation.
Moreover, they store the operating parameters so that the configuration data are retained
even if the BPS is replaced and can show parameters and operating data on a display
(MA 4D.7).
A listing of the available connection units and associated short descriptions can be found in
chapter 5. Separate data sheets are available that contain further details about the connec-
tion units.
Leuze electronic BPS 37
Description
9