HiaGuard is a Safety Instrumented System (SIS) developed by HollySys Group for industry automation safety applications, which has obtained the SIL3 certification from TÜV Rheinland, and is compliant with requirements under the IEC61508/IEC61511/IEC50156-1 standards. The HiaGuard system can be applied to projects requiring very stringent safety requirements up to the SIL3 level.
The HiaGuard system adopts 2-out-of-3 Diagnostics (2oo3D), applicable for Emergency Shutdown Systems (ESD), Fire & Gas Systems (FGS), Burner Management Systems (BMS), Emergency Trip Systems (ETS), Process Shutdown Systems (PSD), and Key Process Control applications.