HIMax Safety Manual - Tuv-fs.com

HIMax2 Intended Use2 Intended Use2.1 ScopeThe HIMax safety-related controllers can be used in applications up to SIL 3 in accordancewith IEC 61508.The HIMax systems are certified for use in process controllers, protective systems, burnersystems and machine controllers.All HIMax input and output modules (I/O modules) can be operated with an individualprocessor module or with several redundant processor modules.When implementing safety-related communications between various devices, ensure thatthe overall response time does not exceed the fault tolerance time. All calculations must beperformed in accordance with the rules given in the Safety Manual.Only connect devices with safe electrical isolation to the communications interfaces.Application in accordance with the 'De-Energize to Trip Principle'The automation devices have been designed in accordance with the 'de-energize to trip'principle.A system that operates in accordance with the 'de-energize to trip principle' does notrequire any power to perform its safety function.Thus, if a fault occurs, the input and output signals adopt a de-energized, safe state.Application in accordance with the Energize to Trip PrincipleThe HIMax controllers can be used in applications that operate in accordance with the'energize to trip' principle.A system operating in accordance with the 'energize to trip' principle requires power (suchas electrical or pneumatic power) to perform its safety function.Therefore, the HIMax controllers are tested and certified for use in fire alarm and firefightingsystems in accordance with EN 54 and NFPA 72. To contain the hazard, thesesystems must be able to adopt an active state on demand.When designing the controller system, the requirements specified in the applicationstandards must be taken into account. For instance, line diagnosis for the inputs andoutputs may be required.Use in Fire Alarm SystemsAll HIMax systems with analog inputs can be used in fire alarm systems in accordance withDIN EN 54-2 and NFPA 72.The operating requirements must be observed!2.2 Non-Intended UseThe transfer of safety-relevant data via public networks (e.g., the Internet) is not permittedunless additional measures are taken to increase security (e.g., VPN tunnel, firewall, etc.).With fieldbus interfaces, it is impossible to implement safety-related communications ifsafety-related fieldbus protocols are not used.2.3 Operating RequirementsThe devices have been developed to meet the following standards for EMC, climatic andenvironmental requirements:HI 801 003 D Rev.2.0 Page 11 of 70