Mounting and installation
Leuze electronic GmbH + Co. KG
BPS 8
26
6
Mounting and installation
6.1
Mounting the bar code tape
6.1.1 Installation and application remarks
NOTE
BCB mounting
When processing BCBs, observe the specified processing temperatures.
When processing BCBs in cold storage facilities, the BCB must be affixed before cooling the
storage facility. However, if it should be necessary to affix the BCB at temperatures outside
of the specified processing temperature, assure that the bonding surface as well as the BCB
are at the processing temperature.
Avoid dirt deposits on the BCB.
If possible, affix the BCB vertically. If possible, affix the BCB below an overhead covering.
The BCB must never be continuously cleaned by on-board cleaning devices such as brushes
or sponges. Permanent on-board cleaning devices polish the BCB and give it a glossy finish.
The reading quality deteriorates as a result.
After affixing the BCBs, make certain that there are no polished, high-gloss surfaces in the
scanning beam (e.g., glossy metal at gaps between the individual BCBs), as the measure
-
ment quality of the BPS may be impaired.
Affix the BCBs to a diffusely reflective support, e.g., a painted surface.
Avoid sources of extraneous light and reflections on the BCB.
Ensure that neither strong sources of extraneous light nor reflections of the support on which
the BCB is affixed occur in the vicinity of the BPS scanning beam.
Affix the BCB over expansion joints up to a width of several millimeters.
The BCB must not be interrupted at this location.
Cover protruding screw heads with the BCB.
Ensure that the BCB is affixed without tension.
The BCB is a plastic tape that can be stretched by strong mechanical tension. Excessive
mechanical stretching results in lengthening of the tape and distortion of the position values.
NOTE
BCB application
Make certain that the BCB is located in the scanning beam of the BPS over the entire tra
-
versing path.
The BPS can determine the position on BCBs with arbitrary orientation.
Bar code tapes with different value ranges may not directly follow one another.
In the case of different value ranges, a gap of at least 1 m must be maintained between the
last position bar code value of the preceding BCB and the first position bar code value of the
subsequent BCB (see see chapter 5.2).
For MVS control bar codes (see see chapter 5.2), the minimum distance of 1 m between the
printed value of the last position bar code before the control bar code and the printed value
of the first position bar code after the control bar code must be maintained (BCB G30 ...
printed values in cm).
In the case of bar code tapes with different value ranges, both BCBs must be BCB G30 ...-
type in a 30 mm grid (see see chapter 5.1).
When using the position bar code with the value ’000000’, negative values are output for
position measurements to the left of the label.
