Rockwell Automation 2755 High Performance VLD Scanner - Manual (Page 8)

Chapter
2
Features of Scanner
This chapter gives an overview of scanner features including:
•
overview of scanner
•
LED indicators
•
scan angle adjustment
•
safety labels
•
available accessories
The high performance, fixed-mount scanners use a visible laser
diode for non-contact scanning applications. The laser generates a
small, concentrated light beam that exits the scan window. Light,
reflected off the bar code symbols, passes back through the window
and is detected by a light sensor. The signal is then sent to the
decoder for further processing.
Important: Other than the scan window, the scanner contains
no user-serviceable parts. Removing or attempting to remove
the sealed screws will void the warranty.
To Label
Reflected Light from Symbol
(Diffuse Return)
The scanners are compatible with these Allen-Bradley bar code
decoders:
•
Catalog No. 2755-DS1A/DS4A Enhanced Single-Head Decoders
•
Catalog No. 2755-DD1A/DD4A Enhanced Dual-Head Decoders
Equipped with either a NEMA Type 1 or Type 4 connector, the
environmentally sealed enclosure is suitable for a wide range of
applications. Each scanner has a permanently attached 10 foot (3
meter) cable for connecting to a decoder, and an 11.5 inch (.29
meter) package detector cable. Extension cables are available to
increase the scanner-to-decoder distance to 25 or 50 feet (7.6 or 15.2
meters).
Chapter Objectives
Overview of Scanner