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PR_Road Use

First high-performance off-highway ECU family certified under ISO 26262

Vienna, Austria, August 17, 2020. TTControl has received the first ISO 26262:2018 certification for its off-the-shelf electronic control units for the off-highway market. This enables the use of the electronic controllers designed for rough operating conditions in road vehicle electrical and electronic (E/E) systems. TÜV Nord certified the functional safety and the compliance with the ASIL C integrity level of the TTC 500 electronic controller family when programmed in C.

“Drivers of trucks and busses, as well as mobile machinery used on roads, such as firefighting vehicles, garbage trucks and road sweepers, expect their vehicles to offer the same safety level as passenger cars,” says Manfred Prammer, Managing Director of TTControl. “By using our ASIL C certified electronic controllers, vehicle manufacturers raise the safety standard in the heart of their electronic architecture and prevent system failures. Using certified safety-relevant components reduces vehicle-level validation costs significantly.”

The TTC 500 series consists of high-end safety-control units, designed to build up a safe, centralized electronic architecture using a single controller for the whole vehicle. A single controller architecture can be used in a wide range of automotive and off-highway applications to handle electronic complexity, save costs and increase safety.

ISO 26262 is the international standard for road vehicle functional safety as defined by the International Organization for Standardization (ISO). The standard aims to reduce possible hazards caused by electrical and electronic systems' failure and malfunctioning. In the ISO 26262:2018 edition, the standard has been extended to vehicles weighing over 3.5 tons.

ISO 26262 is relevant for safety-related systems that include one or more electrical or electronic (E/E) system installed in series production road vehicles, including buses and trucks. So far, the TTC 500 family has fulfilled the IEC 61508, ISO 13849 and ISO 25119 safety standards. Now, the entire ECU platform covering both hardware and software when programmed in C complies with the even stricter requirements for functional safety under ISO 26262:2018, as a safety element out of context (SEooC).

Safety requirements depend on the ASIL rating of the target application and can range from ASIL A to ASIL D, depending on the defined risk classes and integrity levels of each safety goal.

TTC 500 family products are supplied by TTControl for the off-highway market and by TTTech Auto for the automotive market.

About the TTC 500 family

The TTC 500 family consists of high-end safety electronic control units designed to satisfy upcoming needs for a wide range of high-end applications like construction and agricultural machinery or the automotive industry. The freely programmable high-end electronic controllers, with a powerful dual-core ARM Cortex®-R4 lockstep processor, are protected by a compact, automotive-style housing suited for harsh environments.

They can be used as a platform for vehicle prototyping and development and as a powerful control unit for series programs, e.g., as a vehicle control unit (VCU), for (electrical) power train applications or vehicle dynamics control systems – even in low-volume programs.

The safety controllers fulfill requirements up to ASIL C (ISO 26262:2018) / SIL 2 (IEC 61508) / PL d (ISO 13849) / AgPL d (ISO 25119). The compatible product family consists of five members and can be programmed either in C, CODESYS®, CODESYS® Safety SIL 2 or in the SAFERTOS® environment. ISO 26262:2018 certification only applies to C-programming environment.

The extensive I/O set with various configuration options makes the TTC 500 control units suitable for a wide range of high-end applications.

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