CLV621-1120 | Raster Barcode Reader | Installation and Maintenance Manual
Product Introduction
The SICK CLV621-1120 belongs to the CLV62x family of fixed mount barcode scanners. Firstly, this device operates as a raster scanner with fixed focus optics. Additionally, it projects eight laser lines covering a 15 mm raster height at 200 mm distance. Therefore, the scanner captures codes across a wider vertical field than single line alternatives. Furthermore, the CLV621-1120 reads all common 1D barcode symbologies, including Code 128, Code 39, UPC/EAN, and GS1 DataBar. Meanwhile, the SMART620 decoding algorithm enhances reading performance on damaged or partially obscured labels.
Core Value
Industrial operators choose the CLV621-1120 for three primary reasons. Firstly, the extended 60–730 mm reading range eliminates the need for precise mechanical positioning. Consequently, integrators gain flexibility when mounting scanners above conveyors or alongside sortation equipment. In addition, the built-in Ethernet interface supports both TCP/IP and PROFINET protocols without requiring external gateway modules. Therefore, the CLV621-1120 reduces hardware costs and simplifies network architecture. Furthermore, the IP65 aluminum die-cast housing withstands dust, moisture, and typical warehouse contaminants. Finally, the swivel M12 connector design eases installation in space-constrained mounting locations.
Technical Insights
The CLV621-1120 operates with a visible red laser at 655 nm wavelength. Moreover, the device maintains laser class 2 compliance under EN 60825-1 standards. The scanning frequency ranges from 400 Hz to 1,200 Hz. Additionally, the scanner resolves barcode modules from 0.35 mm to 1 mm. Meanwhile, the device supports up to 20 codes per single scan using the standard decoder. Furthermore, the SMART620 decoder handles up to 6 codes per scan with enhanced reconstruction capabilities. The CLV621-1120 also provides multiple interface options: Ethernet, RS-232/422/485 serial, and CAN. Besides, the device accepts 10–30 V DC power through a 12-pin M12 male connector.
Installation & Maintenance
Proper installation begins with correct mounting distance. Firstly, position the CLV621-1120 between 60 mm and 730 mm from the barcode surface. Secondly, align the scan line at approximately 15° relative to the barcode plane. Consequently, this angle minimizes specular reflection interference. Next, connect the 12-pin M12 power connector and the 4-pin M12 Ethernet connector. Moreover, use shielded twisted-pair cables that meet CAT5 specifications for reliable data transmission.
For configuration, the SOPAS ET software provides parameter setup and diagnostics. Furthermore, the software displays reading quality percentage values for alignment optimization. Meanwhile, maintenance tasks remain minimal because the CLV621-1120 contains no user-serviceable parts. Additionally, clean the glass viewing window periodically with a soft cloth. Subsequently, monitor the Ready and Result LEDs for operational status confirmation.
Buyer's Guide FAQ
Q1: What is the maximum reading distance for the CLV621-1120?
The device reads barcodes from 60 mm to 730 mm. Specifically, larger barcodes read at greater distances, while small 0.35 mm modules require shorter range placement.
Q2: Does the CLV621-1120 support PROFINET natively?
Yes. The built-in Ethernet interface handles PROFINET single port communication directly. Additionally, dual port redundancy requires an optional external module.
Q3: Why does the scanner miss tall barcodes?
The raster height setting likely requires adjustment. Therefore, increase the raster height parameter in SOPAS ET. The device projects 8 lines covering 15 mm at 200 mm distance.
Q4: Can I power the CLV621-1120 from a standard 24V PLC supply?
Absolutely. The device accepts 10–30 V DC input. Consequently, most industrial 24 V power supplies work without modification.
Q5: How do I troubleshoot duplicate barcode readings?
Set the multiple readings parameter to 1 in SOPAS ET. Alternatively, enable auto pulse with timeout. Meanwhile, your PLC program can also filter duplicate codes.
