Motion Control & Drives


Rugged, cost-effective safety light curtain

April 2004 Motion Control & Drives

Banner Engineering is offering its EZ-Screen safety light screen system, a non-contact, point-of-operation machine guarding system. This new robust system is believed to be the industry's easiest to set up, align and operate, due to its excellent optical design, variety of sizes and resolutions, zone indicators, detailed diagnostics, and flexible mounting options. It is also believed to be the lowest cost system of its kind. The system also offers ample power - with a range up to 18 m and fast response times ranging from 9 to 40 ms.

"Especially significant to note, the two-piece EZ-Screen system does not require a separate control box, only a self-contained emitter and receiver pair," said Mike Carlson, technical manager for Banner's Safety Products. "This technology also eliminates the need for a synchronisation wire between the emitter and receiver because the system is synchronised optically - making it extraordinarily easy to install and operate," said Carlson. Despite its simplicity, this redundant microprocessor-controlled, self-checking design exceeds control reliability requirements and is certified per CE (Type 4/Category 4) and cULus (NIPF, UL61496, UL1998).

With systems available in two resolutions offering minimum object sensitivity of 14 mm or 30 mm, this compact package is suitable for finger or hand detection on smaller production machines, yet robust enough for large power presses. The addition of these hand protection EZ-Screen models round out the EZ-Screen safety light screen product family that includes grid and point style models for long-range (up to 70 m) perimeter guarding applications. The vibration-tolerant emitter and receiver circuitry, rugged aluminium housing, die-cast metal end caps, and acrylic lens cover result in long-lasting dependability, even in demanding industrial environments. It is also smaller than similar competitive systems, measuring just 45,2 mm by 36 mm.

Ease of set-up is achieved with a wide range of protective heights from 150 to 1800 mm, available in 150 mm increments. The emitter and receiver can be oriented on a vertical or horizontal plane or at any angle in between. Bracket choices provide the option of mounting the emitter and receiver from each end or by a convenient mounting channel on either side. Special brackets are also available for retrofitting older light curtains. Each system is pre-configured for most typical trip output, 'reach-through' applications. Trip output automatically resets when blocked beams are cleared. For 'pass-through' applications, Latch Output is easily configured via the access panel on the front of the receiver. Latching output requires a manual reset once the beams are cleared.

Extensive diagnostics further aid and simplify set-up, operation and maintenance. Both emitter and receiver feature highly visible diagnostic displays to provide continuous feedback of operating status, configuration and error conditions. The receiver features an easy to read seven-segment, three-digit display to indicate the number of beams interrupted or blocked and error codes if the system goes into lockout mode. The LED Zone Indicators on the receiver show when sections of the light screen are aligned or clear, or which areas are misaligned or blocked. DIP-switch selectable functions enable reduced resolution (Floating Blanking), Trip or Latch Output, external device monitoring (EDM), and Scan Code setting are accessible through the access cover.

The Banner EZ-SCREEN System is intended for point-of-operation machine guarding applications and other safeguarding applications, including area guarding when mounted horizontally and perimeter guarding utilising corner mirrors. A range of mounting brackets, stands and mirrors are available to facilitate virtually any conceivable mounting configuration. Typical applications include small assembly equipment, pick-and-place machines, moulding presses, packaging machinery, palletisers, roll formers, automated production equipment, robotic work cells, and power press applications.

The receiver has two solid-state safety outputs to control 24 V d.c. loads up to 0,5 A. For AC loads or loads requiring higher currents, an optional relay interface module is available, or discrete relays may be driven directly.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

How vision-guided robotics is transforming South African manufacturing
Yaskawa Southern Africa Motion Control & Drives
In South African manufacturing, the final stages of production need more than manual labour or conventional automation. For many, vision-guided robotics is becoming the solution to smarter, more flexible end-of-line processes.

Read more...
Transporting substations for the world’s largest offshore wind farm
Motion Control & Drives
Dogger Bank Wind Farm will be the world’s largest offshore wind farm when it is completed. Mammoet was involved in providing transportation and weighing of the project’s three offshore substations.

Read more...
Lubrication application a key component for wire rope longevity
Motion Control & Drives
As part of its extensive work to help develop benchmarking standards for wire rope lubrication in South Africa, lubrication specialists Lubrication Engineers South Africa has found the Viper wire rope lubricator to be a key element for effective lubrication application and rope maintenance.

Read more...
Extreme pressure additives for oil
Wearcheck Motion Control & Drives
Extreme pressure additives - the other metal guardians in your oil additives - work their magic under pressure.

Read more...
SEW EURODRIVE sets the pace with power packs in African mining
Motion Control & Drives
Comprehensively supporting the mining sector with commodity-specific drive train solutions, SEW-EURODRIVE has cemented its reputation as a trusted partner to the industry, a testament to its customer-centric approach.

Read more...
Anti-wear additives – the metal guardians in your oil
Wearcheck Motion Control & Drives
Anti-wear additives are used to protect against wear and the loss of metal surfaces during mixed-film and boundary-film lubrication.

Read more...
SEW-EURODRIVE advances industrial performance with next-gen predictive maintenance
Motion Control & Drives
Predictive maintenance, once considered an emerging technology, is now a core requirement for modern operations and SEW-EURODRIVE is driving this evolution with its advanced DriveRadar IoT Suite.

Read more...
Generation surface drill rig
Motion Control & Drives
Epiroc is launching a new and improved PowerROC T45. This new generation surface drill rig offers increased fuel efficiency and high availability, and is a welcome addition to the PowerROC family.

Read more...
Coke drum integrity project at Canadian oil sands site
Motion Control & Drives
Mammoet supported a leading Canadian energy provider in Alberta’s oil sands with replacing its original eight coke drums.

Read more...
Polymer bearings contribute to heavy lifting success
Motion Control & Drives
Leading dock-levelling and materials-handling specialist, REV Designs & Installations designs and manufactures a wide range of loading, docking and lifting equipment including some of the largest scissor lifts ever produced in the country. A key engineering decision was to move away from greased steel bearings and fully adopt igus high-performance polymer bearings across the key pivot points of the new lifts.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved