Functional Engineering Overview
The SSC50D-S2513 is the central processing unit of the Yokogawa ProSafe-RS Safety Instrumented System (SIS). It features a duplexed dual-processor architecture that eliminates single points of failure and ensures continuous execution of safety logic.
Designed for high-integrity environments, the unit executes safety functions for Emergency Shutdown (ESD), Fire & Gas (F&G), and Burner Management Systems (BMS). The redundant configuration maintains SIL3 compliance even during maintenance or localized hardware faults.
Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Architecture | Duplexed redundant processors with hardware synchronization |
| Network Interface | Native Vnet/IP communication |
| I/O Expansion | Supports up to 9 remote safety node units |
| Operating Temperature | -20°C to +40°C |
| Environmental Protection | ISA G3 conformal coating |
| Power Supply | Dual-redundant 24 V DC input (Suffix 2) |
| Functional License | CFS1100 Safety Control Function (Suffix 1) |
| Safety Rating | IEC 61508 SIL3 certified |
| Data Protection | Memory protection with battery-less retention |
| Hazardous Area Type | Standard (Non-explosion proof, Suffix 5) |
Key Safety Features
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Parallel Redundant Logic: Dual processors execute and cross-check safety logic in real time.
-
Deterministic Networking: Vnet/IP prioritizes safety-critical communication.
-
DCS Integration: Seamless interface with CENTUM VP while maintaining SIS/DCS separation.
Technical FAQ
What does the S2513 suffix indicate?
2 = Dual-redundant power supply
5 = Standard (non-explosion proof) type
1 = CFS1100 license included
3 = Specific hardware/ROM revision
Is it suitable for offshore use?
Yes, when installed in a proper cabinet. The G3 coating protects against humidity and corrosive gases such as H₂S.
Is it compatible with legacy Vnet?
It is designed for Vnet/IP. Integration with legacy coaxial Vnet requires a gateway or bus converter.
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