Yokogawa SNB10D-413/CU2N/ATD0C Safety Node Unit – Distributed Safety I/O Node | ProSafe-RS Platform
Engineering Background: The Yokogawa ProSafe-RS is a globally recognized Safety Instrumented System (SIS) platform, certified to IEC 61508 and IEC 61511, widely deployed in oil & gas, petrochemical, power generation, and chemical processing industries. The SNB10D-413/CU2N/ATD0C is a fully integrated Safety Node Unit designed for distributed safety I/O architectures within the ProSafe-RS ecosystem.
Product Positioning: This module serves as a remote safety node, enabling engineers to extend SIL2/SIL3-rated safety loops across large-scale plant environments without compromising signal integrity or safety loop response time. It is the preferred choice for procurement engineers specifying distributed safety architectures in hazardous area installations.
Complete Technical Specifications
- Part Number / SKU: SNB10D-413/CU2N/ATD0C
- Manufacturer: Yokogawa Electric Corporation
- Product Series: ProSafe-RS Safety Instrumented System
- Module Type: Safety Node Unit (SNB)
- Safety Integrity Level: SIL2 / SIL3 (IEC 61508 certified)
- Communication Interface: Vnet/IP Safety Bus (CU2N node controller)
- I/O Configuration: ATD0C – Analog Thermocouple/mV Input module
- Input Channels: 10-channel analog thermocouple input
- Input Signal Types: Thermocouple (B, E, J, K, N, R, S, T), mV input
- Power Supply: 24 VDC (redundant power supported)
- Operating Temperature: 0°C to +60°C
- Storage Temperature: -20°C to +70°C
- Humidity: 5% to 95% RH (non-condensing)
- Enclosure / Mounting: DIN rail / panel mount, IP20
- Weight: Approx. 5.9 kg (assembled node unit)
- Certifications: IEC 61508, IEC 61511, CE, cULus
- Country of Origin: Japan
Proven Application Environments
- Oil & Gas upstream/downstream safety shutdown systems (ESD)
- Petrochemical plant burner management systems (BMS)
- LNG terminal process safety and fire & gas detection integration
- Power generation turbine protection and boiler safety loops
- Chemical reactor high-temperature monitoring and interlock systems
- Offshore platform safety instrumented functions (SIF)
- Pharmaceutical critical process safety monitoring
Engineering Advantages
- Distributed Architecture: Enables remote safety I/O nodes up to 1 km from the safety controller, reducing field wiring costs significantly.
- High-Accuracy Thermocouple Input: ATD0C module provides ±0.1% full-scale accuracy for critical temperature safety loops.
- Redundant Communication: CU2N node controller supports dual-redundant Vnet/IP safety bus for fault-tolerant operation.
- Hot-Swap Capability: Modules support online replacement without shutting down the safety system, minimizing plant downtime.
- Seamless CENTUM VP Integration: Native integration with Yokogawa CENTUM VP DCS for unified safety and process control.
- Diagnostics & Self-Test: Continuous online diagnostics with automatic fault detection and alarm reporting to the safety controller.
System Architecture & Signal Flow
The SNB10D-413/CU2N/ATD0C operates as a distributed node within the ProSafe-RS architecture. Field thermocouple signals are wired directly to the ATD0C analog input module. The CU2N node controller processes and transmits safety-rated data over the redundant Vnet/IP safety bus to the ProSafe-RS Safety Control Unit (SCU). The SCU executes the safety logic and communicates with the CENTUM VP DCS operator station. This architecture supports Safety Instrumented Functions (SIF) with response times compliant to SIL2/SIL3 requirements under IEC 61511.
Sourcing & Quality Verification
- All units sourced from authorized Yokogawa distributors or verified industrial surplus channels.
- Each unit undergoes visual inspection, label verification, and functional pre-shipment check.
- Original Yokogawa documentation and calibration records available upon request.
- Traceability documentation provided for safety-critical procurement requirements.
- Units shipped in anti-static packaging with humidity indicators.
Procurement Process
- Submit your RFQ via support@konmask.com or WhatsApp +0086 19859288691.
- Receive stock confirmation, lead time, and formal quotation within 24 hours.
- Place order via Konmask.com secure checkout (T/T, PayPal, credit card accepted).
- Unit ships within 2–5 business days with DHL/FedEx tracking provided.
- Post-delivery technical support available from our automation engineering team.
Technical FAQ
Q: Is the SNB10D-413/CU2N/ATD0C compatible with ProSafe-RS R3.xx and R4.xx firmware?
A: Yes, this node unit is compatible with ProSafe-RS R3.02 and above. Please confirm your SCU firmware version prior to installation.
Q: Can the ATD0C module be replaced online without a safety system shutdown?
A: Yes, the ATD0C supports hot-swap replacement when the node is in maintenance bypass mode per ProSafe-RS engineering procedures.
Q: What is the maximum node distance from the Safety Control Unit?
A: The CU2N node controller supports Vnet/IP communication up to 1,000 meters from the SCU using standard Ethernet cabling.
Q: Do you provide IEC 61508 SIL certification documentation?
A: Yes, Yokogawa SIL certification documents and FMEDA reports are available upon request for safety case submissions.
Q: What is the warranty on this unit?
A: Konmask.com provides a 90-day functional warranty on all tested units. Extended warranty options available on request.
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Contact: support@konmask.com | +0086 19859288691
