Only a safe plant can be profitable. With the understanding and acceptance of IEC61508/IEC61511, the international standards on functional safety by end users in process industries, safety awareness has been established. The top management of plants is more concerned about production safety because only safe plant can achieve sustainable development.
HiaGuard has passed SIL3 (Safety Integrity Level-3) certification and CE certification conducted by TÜV Rheinland, which is applicable to safety-related applications of ESD (Emergency Shut Down), FGS (Fire & Gas detection System), BMS (Boiler Management System) and ETS (Emergency Trip System). The reaction time of HiaGuard is within 30ms (200 I/Os) which meets the high-speed requirements for fast-response applications.
The design principle of achieving both high safety and high availability are adopted to meet the requirements of critical application. High safety ensures the plant safety in the case of process unit accident. High availability sustains the “non-stop” production and prevent from unscheduled process shutdown due to the failure in the safety instrumented system.
System Features
Safety enhanced design
− 2 out of 3 voting with diagnostics (2oo3D)
− Diagnostics measures with high DC (diagnostic coverage) and fast alert
− Physical separation reducing common cause failures
− Comprehensive line monitoring with real-time alert
− Communication modules with built-in firewall function ensuring security
− Certified configuration software with security measures ensuring user application integrity
Availability enhanced design
− Degraded mode allowed
− Independent power supply for system side and field side
− 1+1 power supply redundancy
− Redundancy configuration is supported for communication modules and I/O modules
− Multiple failure tolerance for single module
− Safety loop’s availability up to 99.999%
