HC900 Control System Architectures - Scope of SIL Certification for HC900 Control System Architectures
16 HC900 Process & Safety Controller Safety Manual Revision 1.9
01/14
Scope of SIL Certification for HC900 Control System Architectures
The HC900 control systems shown in all of the topologies above are included in this SIL certification with
the exception of:
• 900 Control Station and other supervisory control systems – These systems are outside the scope of
SIL certification for the HC900 Control System. However, the non-interference of these
communication protocols is part of the scope to allow connection of these interfaces during safety-
related operations.
• Hubs switches and cabling – These are part of building the network and are part of the “black
channel” and are not required for SIL certification.
• The PFQ (Pulse Frequency Quadrature) I/O module is non-interfering in this SIL certification
project.
• RTPs (Remote Terminal Panels) and associated cables are not part of this SIL certification project.
• Attention: An HC900 control system retains its SIL2 rating only if all of the components that
comprise the HC900 control system are operating within their operating temperature range.
To Next Page
Loading...
