Safety for man and machine

Experience, tradition and passion - these values ensure the five-star quality at the five-brother company Bühler Bedachungen und Bauspenglerei from Romanshorn in Switzerland, a business specialising in roofing and architectural sheet metal. Quality is the top priority for the family business - particularly when it comes to selecting its partners and suppliers. Among these is the Swiss company Jorns AG, which supplied the new double bending machine, model TP-150G-RH-UV-SL-1250-CP200-6.4-mp, including safety concept for the architectural sheet metal area as well as the manufacturer for optical sensors, which ensures the corresponding safety at work for man and machine, Leuze electronic.

Safety for man and machine is required not only by safety-relevant, international standards. Protecting man and machine from dangerous processes is a matter of course for the 35-person company. Trained sheet metal worker Bruno Bühler says: "If a new machine is used, such as the new TwinMatic-Pro 150 bending machine from Jorns here in our architectural sheet metal operations, it must satisfy the latest requirements on safety technology." When selecting the safety concept, he relied on the consulting expertise of the manufacturer of this machine, Jorns AG from Lotzwil. Thanks to positive experiences with other projects, Jorns used the RSL 430 safety laser scanner from Leuze electronic, which optoelectronically safeguards access to the long, front side of the machine. The RSL 430 is centrally positioned under the bending basin, ensuring that the maximum radial range of the sensor can be used. The area in front of the machine can thereby be safeguarded with just one sensor.

TwinMatic-Pro 150 is the name of the new bending machine from Jorns AG used in the architectural sheet metal area of the company, which replaced a nearly 20-year-old machine with similar functionalities here. The new machine enables the bending of a very wide range of types and thicknesses of sheet metals in a fully automated process: aluminium, zinc, copper, steel. Only when loading and removing the metal sheets does the machine need to be handled manually. As soon as the machine operator crosses the red line on the floor located approximately 80cm from the bending machine, thereby entering the danger zone of the machine, his movement is detected by the RSL 430 safety laser scanner and the machine comes to an immediate standstill. Should this safety monitor fail, there is a "safety net" in the form of a step bar. If this bar is actuated by the operator 's foot, it presses against an EMERGENCY-OFF command switch that brings the machine to a standstill in a fraction of a second. Bruno Bühler, who usually operates the bending machine himself, says: "It 's good to have a double safety net - fortunately, we 've never had to make use of it. The RSL 430 safety laser scanner works reliably and fault-free, making it the optimum solution for us."

Multiple awards

Due to its innovative capacity, the RSL 400 safety laser scanner - which is available in various models - convinced not only end users such as Bühler since being launched on the market at the end of 2015. It also convinced juries of experts, claiming multiple awards in 2016, including the GIT Safety Award, the Industriepreis as well as the Handling Award.

The safety laser scanner functions as follows: it transmits periodic light pulses via a rotating deflection unit. These are scattered in all directions by obstacles, such as persons entering the danger zone. A part of the light pulses is received again by the safety laser scanner and evaluated. The scanner calculates the precise position of the machine operator from the propagation time of the radiated light and the current angle of the deflection unit at that time. If this is located within the previously defined protective field, the safety laser scanner executes a safe switching function.

Pascal Guyot, director of control engineering at Jorns AG says: "In our case, this happens as soon as the machine operator crosses the safety line marked on the floor with red signal colour at the long, front side of the machine." Should this occur, the safety-related switching outputs are switched off. The required safety distance is calculated on the basis of safety-related standard DIN EN 999. Playing a role here are factors such as the approach speed relevant to safety and height of the protective field above the ground. Furthermore, the stopping time of the machine as well as additional distances, for example, for system-related measurement errors, must also be taken into account.

All-round protection from all machine sides is, however, not provided by a single safety laser scanner positioned centrally under the bending basin of the bending machine. Depending on how they are attached, at least two safety sensors would be needed to achieve this. With just one safety laser scanner, cutting in automatic mode would only be possible in inching mode. Obstructions could also occur if the sheet was to protrude far outside of the machine when bending sheet metal top-down. Bühler therefore decided to mount a second RSL 430 safety laser scanner to monitor the machine room from above, thereby reducing the depth of the danger field to 80cm. The second scanner is attached to the ceiling with an iron chain and has an operating range of 8.25m with a resolution of 70mm and a detection range of 270 degrees.

The position of the safety laser scanner is always based on the sensor that monitors the bending line. Note that the control panel is also detected as an object and must therefore be located outside of the danger zone while in automatic operation. Bojan Zmijanjac, Area Sales Manager at Leuze electronic Switzerland says: "If the area of the control panel were to be removed from monitoring, blind zones would arise within the danger zone due to shadowing. In addition, blind spots would occur between the stands and behind the machine, which must absolutely be safeguarded."

With the positioning of two RSL 430 safety laser scanners, Jorns Bühler recommended an integrated, comprehensive safety concept for all-round machine protection that has been proven in practical use and that convinces. Tobias Wüst, managing director of the Swiss subsidiary of Leuze electronic in Fluringen, emphasises the competence of the manufacturer and innovation leader in the area of optical sensors: "Safety sensors have a great deal to offer. Reliable safety laser scanners require many years of experience. With the RSL 400 safety laser scanner series, Leuze electronic has succeeded with a development that combines maximum reliability and performance with simple operation."

For more information about safety systems please visit www.leuze.de.

Leuze

Terek House, Sandpiper Court
Phoenix Park
St Neots
PE19 8EP
UNITED KINGDOM

+44 (0)1480 408500

mail@leuze.co.uk

www.leuze.co.uk

More from Leuze

AI has its eye on bar code identification

Posted 5 days ago

Quick-action integration via IO-Link

Posted 1 month ago

White Paper: Optical sensors and light curtains

Posted 1 month ago

Sensor expert Leuze enjoys strong growth

Posted 1 month ago

Reliable detection of shrink-wrapped packages

Posted 3 months ago

New distribution centre for Leuze

Posted 4 months ago

Improving safety in harsh environments

Posted 5 months ago

Time and money savings pledge for conveyor system manufacturers

Posted 6 months ago

Greater safety in harsh environments

Posted 8 months ago

Container and tray identification made easy

Posted 8 months ago

White Paper: Industry 4.0 and the dual channel principle

Posted 8 months ago

Bar code reader range enhanced

Posted 9 months ago

Industry 4.0 technology report – the dual channel principle

Posted 9 months ago

Leuze sensors take the biscuit

Posted 11 months ago

Dynamic safeguarding of AGV/robot transfer stations

Posted 1 year ago

Advances in reference diffuse sensor technology

Posted 1 year ago

Sweet success for sensors in confectionery manufacture

Posted 1 year ago

2D-code readers key to success of tyre automation system

Posted 1 year ago

Work progresses on Leuze's new distribution centre

Posted 1 year ago

Leuze electronic launches volume measurement system

Posted 1 year ago

Vision-based sensor for precise control of double-depth position

Posted 1 year ago

Leuze code reader gains Blockchain authentication capability

Posted 1 year ago

Leuze electronic wins Best-of-Industry-Award at SPS show

Posted 1 year ago

Is it still acceptable to use two-beam safety light barriers?

Posted 2 years ago

What are the options for AGV navigation sensors?

Posted 2 years ago

Safety light curtain incorporates SPG muting technology

Posted 2 years ago

Process-controlled access guarding without using muting sensors

Posted 2 years ago

How machine tools and systems can operate safely and efficiently

Posted 2 years ago

Leuze electronic safety expertise at LogiMAT 2019

Posted 2 years ago

What is dual channel technology for sensors?

Posted 2 years ago

Latest developments in AGV positioning technologies

Posted 3 years ago

Customised sensor developed for lab automation robot

Posted 3 years ago

Latest laser area scanners for static and AGV applications

Posted 3 years ago

Compact cylindrical optical sensor housed in M12 body

Posted 3 years ago

Leuze sensors used in automated powder coating system

Posted 3 years ago

Leuze electronic looks back at its 55-year success story

Posted 3 years ago

Leuze electronic launches new distance sensors

Posted 3 years ago

High-speed quality check with high-performance camera technology

Posted 3 years ago

Sensor data available globally: beyond the local company cloud

Posted 3 years ago

Smart Process Gating: Leuze reinvents light curtain muting

Posted 3 years ago

Intelligent sensor cable prevents downtime by predicting failure

Posted 3 years ago

Efficient automation of life science laboratories

Posted 3 years ago

Compact camera-based IPS200i sensor is quick to commission

Posted 3 years ago

Safe position monitoring in industrial automation

Posted 4 years ago

Leuze electronic collaborates with Microsoft to accelerate IoT

Posted 4 years ago

High-performance sensors in a compact package

Posted 4 years ago

Non-contact, reliable detection of objects and fill levels

Posted 4 years ago

Light curtains for safeguarding packaging systems

Posted 4 years ago

New safety relays and safety controllers from Leuze electronic

Posted 4 years ago

New economical type 4 single-beam safety devices

Posted 4 years ago

CML 700i measuring light curtain features Profinet interface

Posted 4 years ago

See Industry 4.0-ready sensors at Hanover Messe 2017

Posted 4 years ago

Leuze electronic sensors for packaging machines at Interpack

Posted 4 years ago

White paper explains Industry 4.0 collaboration with Microsoft

Posted 4 years ago

New machinery risk assessment white paper from Leuze electronic

Posted 4 years ago

Data transmission photoelectric sensor with remote diagnostics

Posted 4 years ago

Optoelectronic safety devices cut machine tool cycle time

Posted 5 years ago

Reading 1D, stacked and 2D codes is quicker and easier

Posted 5 years ago

Safety locking devices feature uniquely coded RFID technology

Posted 5 years ago

Safety light curtain withstands shock and vibration

Posted 5 years ago

Avoiding overflow with light section sensors

Posted 5 years ago

See new smart sensors at Drives and Controls 2016

Posted 5 years ago

Safety laser scanners: what are the most important requirements?

Posted 5 years ago

Sensors and systems for intralogistics

Posted 5 years ago

Optical sensors are tolerant of target materials and finishes

Posted 5 years ago

New top-end laser scanner from Leuze electronic

Posted 5 years ago

Sensors for packaging

Posted 6 years ago

Setting up access guarding with muting is easy with MLDSET

Posted 6 years ago

Light section sensors: reliable detection of medicine packages

Posted 6 years ago

IO-Link and connectivity in the age of Industry 4.0

Posted 6 years ago

New warehouse, new sensors

Posted 6 years ago

AC/DC SR 49C all-voltage sensors now suitable for outdoor use

Posted 6 years ago

Smart cameras for smart inspection systems in beverage industry

Posted 6 years ago

Quality control with LRS 36 light section sensors at dairy

Posted 6 years ago

Leuze RSL 400 scanners are more versatile and easier to use

Posted 6 years ago

MLC safety light curtains now with integrated AS-i interface

Posted 7 years ago

Barcode positioning system with wide range of bus interfaces

Posted 7 years ago

Photoelectric sensor transmits Ethernet data interference-free

Posted 7 years ago

New guard switch incorporated in stainless steel hinge

Posted 7 years ago

CR 50 bar code reader for medical instrumentation

Posted 7 years ago

Pluggable relay module for safety controllers

Posted 7 years ago

Light-band RK46c-VarOS detects object over 50mm band area

Posted 7 years ago

Modular muting safety light beams - easy to specify and install

Posted 7 years ago

Two new ultrasonic sensors for switching and measuring

Posted 8 years ago

New high-performance sensor series 18B from Leuze

Posted 8 years ago

Bar code reader with Ethernet/IP interface

Posted 8 years ago

Leuze MSI safety relays now have interchangeable terminal blocks

Posted 8 years ago

Leuze's HRTR46B Teach opto-sensor is two sensors in one unit

Posted 9 years ago

Cylindrical photo-electric sensors with unique swivel mounting

Posted 9 years ago

Win a Blackberry Playbook at Drives & Controls 2012

Posted 9 years ago

New Leuze salesman for East Midlands and Central England

Posted 10 years ago

Three-dimensional sensing versus machine vision systems

Posted 10 years ago

Bin-picking robot is guided by laser profile sensor

Posted 10 years ago

New modular safety controllers from Leuze electronic

Posted 10 years ago

Free training on machinery safety and SISTEMA

Posted 10 years ago

Free machinery safety and safety controller training workshops

Posted 11 years ago

EN ISO 13849-1 simplified procedure for assessing PL

Posted 11 years ago

Three-beam multiple light beam safety devices save cost

Posted 11 years ago

Single device reads barcodes and 2D codes

Posted 12 years ago

Explosion-proof housings upgrade standard optical sensors

Posted 12 years ago

Smart camera features improved integral lighting

Posted 12 years ago

Free brochure for Leuze Electronic's SOLID safety light curtains

Posted 12 years ago

Leuze electronic continues to expand UK operations

Posted 12 years ago

New Managing Director for Leuze Electronic UK

Posted 13 years ago

Optical sensor saves cost in high-bay warehouses

Posted 13 years ago

Laser distance sensor offered with a choice of spot sizes

Posted 13 years ago

New catalogue for Leuze machine safety products

Posted 13 years ago

Forked sensor offers higher processing speed

Posted 13 years ago

Optical sensors gain EHEDG certification

Posted 13 years ago

Ultrasonic forked sensor achieves higher processing speed

Posted 13 years ago

New catalogue of photoelectric sensors

Posted 13 years ago

Photoelectric sensor for small targets is ultra-compact

Posted 13 years ago

Ruggedised safety light curtains have 14mm resolution

Posted 14 years ago

Tougher safety light curtains to be shown for the first time

Posted 14 years ago

Tactile safety devices explained

Posted 14 years ago

Ultra-compact opto sensors have big specification

Posted 14 years ago

Safety light curtains cope with arduous environments

Posted 14 years ago

Laser measuring sensor achieves +/-3mm over 200mm

Posted 14 years ago

Can Character Verification System checks text on concave end

Posted 14 years ago

Safety light curtains are sealed to IP68

Posted 14 years ago

Measuring light curtain helps check pallet stability

Posted 14 years ago

Ethernet-enabled device reads damaged bar codes

Posted 14 years ago

More applications

Login / Sign up