Business profile
be used in other types of display. There is increasing discussion about SIL2 for large control centre displays or projector systems. Other industries have conveyed an interest as in principle, the solution is of use wherever safe display and safe operation is needed.
Even in cases where the customer
relies on PC technology but not on the proven DEUTA technology, the application can be ported to a PC compatible platform and then upgraded and backed-up with IconTrust®
.
safety reaction is triggered. For every individual area, in every image refresh cycle the displayed image is analysed and compared with the value of the respective input signal. The patent pending system ensures the information is demonstrably up-to-date and correct without the actual application for displaying the information being subject to a verification procedure. Because of this independence IconTrust® enjoys almost limitless applicability. The safety case of SIL approval with
IconTrust® technology is independent of the operating system, software development tools or hardware configuration. It is even possible to reuse existing application software modules and upgrade it to a ‘SIL equipment’. The result is an economic advantage in retrofit projects with new SIL requirements. The lifetime of a project of typically
15-30 years is much longer than any availability of electronic components. Due
to obsolescence, the processor/chipsets have to be changed several times. The effect on projects with SIL requirements is significantly reduced by IconTrust® technology because processor, chipsets, etc. do not have to be defined in the safety case. IconTrust® can be used as a Panel
PC, a TFT monitor or projector. In the control room of train supervision systems, large TFT screens are used that display track, train and signalling information. An ongoing discussion about the safety relevance of this information may result in SIL levels >0 requirements in the future. To achieve this IconTrust® can also be integrated as an add-on or design- in into existing devices. It can be a step in change of paradigm towards SIL >0 approved control centres. The use of IconTrust®
boards is not
limited to human-machine interfaces and, with minor modification, they can
Safety Management Group Complete SIL systems consisting of sensors, controller and actuators (e.g. human machine interfaces) are becoming more and more important in future. In order to ensure a safety integrity level, DEUTA customers are supported by a Safety Management Group. Several development engineers have been trained to become safety engineers and, additionally, safety managers have been appointed to manage communications with assessors. This is also in response to the requirements of the new CENELEC standard DIN EN 50128. The system characteristic is variable and ranges from simple product combinations to high- end safety solutions. Multi-Function Recorders REDBOXsafe, Sensors, e.g. the axle-mounted sensor DF 16 and analogoue indicators e.g. the ESG 14 rounding-off the SIL system with safe systems.
For more information contact Dr. Rudolf Ganz, managing director DEUTA-WERKE. Tel: +49 (0) 2202 958 100
www.deuta.com
July/August 2013 Page 103
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