Maschinenbau

Guaranteeing functional safety in a user-friendly way

The ESX.3cs control unit by STW is now also available in a safety version for safety-oriented applications. With the new safety release of the ESX.3cs, it is now possible to implement applications with Performance Level PL d or Safety Integrity Level 2. Thus, the control unit meets the highest requirements for functional safety of mobile machines.

Machines – whether stationary or mobile – have to be safe. People must not be harmed in any way by their operation and functional safety must be ensured. The new safety release of the ESX.3cs control unit by STW can help implement functionally safe applications.

The new development combines efficiency with robustness: A robust die-cast aluminum housing with automotive plug-in connectors contains a 300 MHz fast 32-bit microcontroller with four MB Flash and eight MB SRAM, up to two CAN interfaces, one serial interface, Ethernet and LIN interface. A second, independent processor monitors various system voltages as well as the program sequence. If required, it switches off all outputs via a second shut-down path or resets the main control unit. Digital and analog feedbacks for almost all signal branches allow a comprehensive diagnosis of the system including the inputs and outputs. Thanks to these features, it is possible to implement functionally safe applications according to EN ISO 13849 and IEC 61508.

For these safety-oriented applications, a safety layer programming interface is available, which allows a separation of safety and non-safety (feedback-free) application sections by means of a memory protection unit. This considerably simplifies the effort for a re-certification in case of changes to the (non-safety) application software. The creation and maintenance of a safety-oriented application is easily possible via the safety manual and diagnostics library.

The application software for the ESX.3cs can be created very efficiently in "C". Numerous convenient functions such as current controllers and ramp functions for outputs or frequency averaging for inputs are already integrated in the programming interface.

The safety update can be retrofitted for control units already being used in the field. Once purchased, STW provides the corresponding software modules via Cloud.

About STW

As an internationally active company with headquarters in Kaufbeuren, we have been committed to the digitalization, automation and electrification of mobile machines for 35 years. With generic or customer-specific products, systems and solutions developed and manufactured at our headquarters in Germany, we support our customers with innovative technology on their way to making their machines the best in the world.

Supplemented by partner products and accompanied by our training, support and system teams, we help medium-sized companies and large OEMs to increase the performance and efficiency of their machines and to increase safety. Through communication between machines, connectivity with cloud platforms and additional partner services, we enable the integration of mobile machines into business processes.

Über die (STW) Sensor-Technik Wiedemann GmbH

As an internationally-active company with its headquarters in Kaufbeuren, we have stood for the digitalization, automation and electrification of mobile machines for 35 years now. With our generic or customer-specific products, systems and solutions, which are developed and produced in Germany, we support our customers in their goal to make their machines the best in the world through innovative technology.

Supplemented by partner products and accompanied by our training, support and system teams, we assist medium-sized companies and large OEMs in increasing the performance and efficiency and also the safety of their machines. Through the communication between the machines and the networking with cloud platforms and partner services, we facilitate the integration of mobile machines into business processes.

We are an independent company, we support our employees and we are aware of our responsibilities towards the environment and the society. Together with our clients and partners we participate actively in important future-related topics: the Internet of Things (IoT) and the Industry 4.0 initiative, (semi)autonomous driving and working and e-mobility.

Firmenkontakt und Herausgeber der Meldung:

(STW) Sensor-Technik Wiedemann GmbH
Am Bärenwald 6
87600 Kaufbeuren
Telefon: +49 (8341) 9505-0
Telefax: +49 (8341) 9505-55
http://www.stw-mm.com

Ansprechpartner:
Sensor-Technik Wiedemann GmbH
Telefon: +49 (8341) 9505-0
E-Mail: presse@wiedemann-group.com
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