HY-TTC 90 – High Safety Controller

The HY-TTC 90 is the top-level electronic control unit of the HY-TTC 50 controller family, offering enhanced flexibility and safety. It is designed to comply with the IEC 61508 and ISO/EN 13849 international standards. It comprises a main CPU, for executing the user application and a smaller diagnostic CPU, which continuously monitors the main CPU and the safety-critical inputs and outputs. In case an error is detected, an internal switch opens, disconnecting all output stages from power supply and shifting the vehicle to a safe state. These safety features prevent uncommanded movements of the vehicle and equipment, thereby ensuring safe working conditions for users.


The HY-TTC 90 fulfills SIL 2 (Safety Integrity Level 2) and PL d (Performance Level d) requirements. As a member of the HY-TTC 50 family, the HY-TTC 90 supports a broad range of applications, including low-cost as well as high-availability applications in off-highway vehicles.
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