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SAFE KEY SYSTEM PREVENTS UNINTENTIONAL MACHINE START-UP PRODUCTS MACHINE BUILDING, FRAMEWORKS & SAFETY


sponsored by Feature


New from Euchner is the CKS2 safe key system, designed to simplify access control and prevent unintentional machine start up. The CKS2 can be used as a safe lockout


system, authorisation system or trapped key system. It is available separately or as a submodule for the MGB2 Modular, opening up many new applications, the company explains. This features integrated


FlexFunction technology, and is suitable for a range of applications in manufacturing, warehousing and procurement. It can be integrated into installations with the highest safety requirements, such as category 4 / PL e according to EN ISO 13849-1. The device can operate as a safe


lockout system, an authorisation assignment for starting installation process sequences, an authorisation sequence for several operators, and a key transfer system. Applications can be defined directly in the control system, which results in greater flexibility. All evaluation electronics are embedded in


the compact unit, which makes installation simpler while guaranteeing maximum safety via highly coded transponder-based keys, the company explains. The electronic principle of operation eliminates the need for key exchange


boxes and key distribution stations. Getting started is simple – users define the


application during initial set up, select a suitable RFID key to activate the required device functions, and assign parameters. If required, they can assign one key to multiple key adapters. Once set up, the CKS2 has one job: safely detecting the key. When a key is inserted, the key adapter reads the data and checks for validity – if the key is recognised as valid, the safety outputs switch. The device can connect


to IO-Link via the appropriate Euchner gateway, enabling


comprehensive diagnostic and communication functions.


For example, this includes identifying which key was used


to operate the installation. When used as a submodule for the MGB2 Modular, the CKS2 submodule can be seamlessly linked via PROFINET/PROFIsafe or EtherCAT/FSoE using the MBM bus module, avoiding complex configuration and key management. This assembly provides an attractive new solution for fully automated logistics or complete turnkey applications. Modular expansion is possible, with


ROLLER PINIONS DELIVER HIGH ACCURACY WITH ZERO BACKLASH


The 32mm and 40mm Roller Pinions from Nexen Group have been re-engineered with new needle bearings to handle higher torque loads while delivering high accuracy with zero backlash. The 32mm Roller Pinion is the same size as the previous


version but has a 66% increase in torque while maintaining its inertia. This provides more project design options without sacrificing accuracy and zero-backlash. The new 32mm design can be used in projects requiring a 40mm Roller Pinion in past designs, allowing for more compact designs. The 40mm version is designed to handle higher torque


loads accurately. The 200% increase in torque capacity maintains the same inertia as the previous design. Furthermore, the company has added additional mounting


holes to the corresponding rack to handle the increase in torque of the 40mm Roller Pinion. "Our new Roller Pinion design allows customers to design


systems that perform in the most demanding applications, no matter the length, speed, or geometry," explained Dave Hein, vice president of Engineering.


Nexen Group www.nexengroup.com


thousands of different key codes available, thanks to proven transponder technology and the high coding level. “Safety tasks, such as access restriction, safe


installation lockout and starting, and selection of the operating mode, play a hugely important role in modern facilities,” explained David Dearden, managing director of Euchner UK. “Wherever there are dangerous machine movements that must be safely started or stopped, the CKS2 brings many benefits to users, particularly its versatility and ease of use.”


Euchner UK


T: 0114 256 0123 www.euchner.co.uk


SECURE TOUCH OPERATION FOR SAFETY-CRITICAL APPLICATIONS


A new technology platform has been developed by RAFI for the market-ready series production of touch systems for safety- critical applications at performance level d. With more and


more functions of stationary and mobile machines being controlled via touch operation, increasing


demands are being placed on the functional safety of touch-operated control systems. To help, RAFI has designed a reliable system architecture based on high-quality, fail-safe components, which is protected by a high level of diagnostic coverage on the software side. In order to monitor all potential sources of error with safety-critical effects, a specific safety controller with its own logic was implemented in addition to the new touch controller. The safety CPU controls all safety-relevant factors from the touch sensors and display, to the plausibility of the command inputs and outputs, and the cyclical function test every millisecond. Parameterisable filter functions cancel sensor signals triggered by unintentional


contact, liquids or other unwanted touch effects. In addition, permanent display monitoring ensures that the user interface is displayed without errors. The touchscreens can optionally be equipped with force detection based on


TWIN-TOUCH technology; and functionally safeguarded electromechanical actuators can also be applied directly to the touch surface.


RAFI Group 20 DESIGN SOLUTIONS OCTOBER 2024 www.rafi-group.com


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