Functional Safety Solution – Yokogawa SNB10D-215/CU2N | ProSafe-RS Safety Node Unit
The Yokogawa SNB10D-215/CU2N is a SIL2-certified Safety Node Unit designed for the ProSafe-RS Safety Instrumented System (SIS). Built for mission-critical process environments, it delivers deterministic safety logic execution, redundant communication, and seamless integration with Yokogawa’s CENTUM VP DCS — making it the go-to choice for engineers specifying functional safety solutions in oil & gas, petrochemical, and power generation facilities.
Where This Product Is Used
- Oil & Gas Upstream/Downstream: Emergency Shutdown (ESD) systems, High Integrity Pressure Protection Systems (HIPPS), and wellhead control panels requiring SIL2 compliance.
- Petrochemical & Chemical Plants: Burner Management Systems (BMS), reactor protection, and toxic gas release prevention interlocks.
- LNG Terminals & Refineries: Fire & Gas (F&G) detection logic, compressor surge protection, and safety-critical valve control.
- Power Generation: Turbine overspeed protection, boiler safety shutdown, and grid-connected generator protection systems.
- Pharmaceutical Manufacturing: Pressure relief and containment interlocks in GMP-regulated production environments.
- Water & Wastewater Treatment: Pump protection, overflow prevention, and chemical dosing safety interlocks.
Technical Specifications
- Model: SNB10D-215/CU2N
- Series: ProSafe-RS (Yokogawa Safety Instrumented System)
- Unit Type: Safety Node Unit
- Safety Integrity Level: SIL2 (IEC 61508 certified)
- Communication: Vnet/IP (dual-redundant Ethernet-based safety network)
- Suffix /CU2N: Dual-redundant CPU module configuration
- Suffix -215: Denotes specific I/O capacity and node configuration
- Weight: 5.9 kg
- Mounting: DIN rail / panel mount (ProSafe-RS node cabinet)
- Power Supply: 24 VDC (via ProSafe-RS power module)
- Operating Temperature: 0°C to 55°C
- Humidity: 10% to 90% RH (non-condensing)
- Certifications: IEC 61508 SIL2, CE, cULus
- Country of Origin: Japan
Why Engineers Specify This Model
- Proven SIL2 Architecture: Hardware fault tolerance (HFT=1) with dual-redundant CPU ensures no single point of failure in safety logic execution.
- Seamless DCS Integration: Native Vnet/IP connectivity allows tight coupling with Yokogawa CENTUM VP for unified alarm management and cause-and-effect matrix configuration.
- High Availability: Hot-standby redundancy with bumpless switchover — critical for continuous process plants that cannot tolerate unplanned shutdowns.
- Deterministic Scan Time: Guaranteed safety response time meets IEC 61511 requirements for process safety applications.
- Lifecycle Support: Yokogawa’s global service network provides long-term spare parts availability and firmware support.
- Compact Node Design: Modular architecture reduces panel footprint while supporting scalable I/O expansion.
Complete System Bill of Materials
The SNB10D-215/CU2N is typically deployed as part of a complete ProSafe-RS node assembly. Common companion components include:
- ANB10D-411/CU2N/NDEL – Standard Node Unit (non-safety, for hybrid SIS/DCS architectures)
- SCP401 – ProSafe-RS Safety Control Unit (master controller)
- SSB401 – Safety Bus Interface Module
- SER401 – Engineering & Maintenance Tool (ProSafe-RS Builder)
- PW481 – 24 VDC Power Supply Module
- CB401 – Communication Bus Module (Vnet/IP)
- SDV141 / SDV541 – Digital Input/Output Modules for field device interfacing
Compliance & Industry Standards
- IEC 61508: Functional Safety of E/E/PE Safety-Related Systems (SIL2 certified)
- IEC 61511: Functional Safety – Safety Instrumented Systems for the Process Industry
- ANSI/ISA-84: Application of Safety Instrumented Systems for the Process Industries
- CE Marking: EMC Directive 2014/30/EU compliant
- cULus: UL/CSA recognized for North American installations
- ATEX / IECEx: Consult Konmask for zone-classified installation requirements
Quality Assurance & Sourcing
- All units sourced from authorized Yokogawa distribution channels or verified industrial surplus with full traceability.
- Each unit undergoes visual inspection, label verification, and functional pre-check before shipment.
- Packaging in anti-static, moisture-barrier materials with shock-absorbing foam inserts.
- Certificates of conformity and test records available upon request.
- Konmask maintains a quality management process aligned with ISO 9001 principles for industrial component sourcing.
How to Source This Part
- Request a Quote: Email support@konmask.com with your required quantity and delivery timeline.
- Phone/WhatsApp: +0086 19859288691 — available for urgent procurement inquiries.
- Lead Time: In-stock units ship within 3–5 business days; sourced units typically 2–4 weeks.
- Export Compliance: Konmask handles export documentation, HS code classification, and customs declarations for international orders.
- Volume Pricing: Discounts available for orders of 3+ units — contact us for a project BOM quote.
Application-Specific FAQ
Q: Is the SNB10D-215/CU2N compatible with older ProSafe-RS R3.x systems?
A: Compatibility depends on firmware revision. Contact Konmask with your existing SCP401 firmware version for a compatibility matrix.
Q: Can this node unit be used in a SIL3 application?
A: The SNB10D-215/CU2N is SIL2 certified. SIL3 applications require additional architectural measures (e.g., 1oo2D voting). Consult your functional safety engineer.
Q: What is the difference between SNB10D and ANB10D?
A: The SNB10D series is the safety-rated node unit for SIS applications; the ANB10D is the standard (non-safety) node unit used in basic process control or hybrid architectures.
Q: Does Konmask provide installation or commissioning support?
A: Konmask specializes in component supply. For commissioning, we can refer you to certified Yokogawa system integrators in your region.
Q: What warranty applies to this unit?
A: Konmask provides a 90-day hardware warranty covering DOA (dead on arrival) defects. Extended warranty options are available — contact us for details.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
