Product Details
Product Overview
The Yokogawa SNB10D-225/CU2T serves as a core expansion hub within the ProSafe-RS safety instrumented system (SIS). This rack-mountable Safety Node Unit houses various I/O modules and connects them to the safety control station via the ESB bus. Engineered for high-integrity environments, it facilitates critical emergency shutdown (ESD) and fire and gas (F&G) logic execution. We supply this unit as 100% Brand New, ensuring your safety system utilizes factory-certified hardware for maximum SIL-rated protection.
Part Number Breakdown
The SNB10D series utilizes a detailed suffix configuration to define power redundancy and environmental protection levels:
| Code Segment | Specification | Technical Definition |
| SNB10D | Base Model | Safety Node Unit (Rack Mountable) |
| -2 | Suffix 1 | Dual-redundant power supply with expansion software license (R3) |
| 2 | Suffix 2 | 220 to 240 V AC Power Supply |
| 5 | Suffix 3 | ISA Standard G3 conformal coating; Temp range: -20 to 70 °C |
| /CU2T | Option | Connector Unit with Terminator for ESB Bus (Part: S9343FA) |
Technical Specifications
The SNB10D-225/CU2T provides a rugged platform for safety I/O processing under extreme conditions.
-
Manufacturer: Yokogawa Electric Corporation
-
Power Supply: Dual-Redundant 220-240 V AC
-
Operating Temperature: -10°C to +70°C (-20°C to +70°C storage)
-
Corrosion Protection: ISA G3 Standard Conformal Coating
-
Network Interface: ESB Bus with CU2T Connector Unit and Terminator
-
Weight: 5.9 kg
-
Mounting: 19-inch Rack Mount
-
Condition: 100% Brand New and Original
Engineering Advantages
The SNB10D-225/CU2T solves critical reliability issues in harsh process environments:
-
Dual-Redundant Power Security: The integrated dual-redundant power supply modules prevent node failure during a single power circuit outage. This ensures the safety node remains active, avoiding unnecessary process trips and maintaining safety integrity.
-
Corrosive Atmosphere Resistance: ISA Standard G3 conformal coating protects the internal circuitry from hydrogen sulfide ($H_{2}S$), chlorine, and other corrosive gases. This feature significantly extends the hardware lifecycle in oil refineries and chemical processing plants.
-
Extreme Temperature Versatility: The unit operates reliably in temperatures as low as -20°C and as high as 70°C. This wide range eliminates the need for expensive specialized cooling or heating systems in many field-mounted cabinet applications.
-
Simplified Bus Termination: The /CU2T option provides a pre-configured connector unit with an integrated terminator. This simplifies the ESB bus installation and prevents signal reflection issues that lead to communication errors between safety nodes.
FAQs
Does the SNB10D-225/CU2T include the node expansion software license?
Yes. The "-2" suffix code confirms that this unit includes the necessary software license for R3 node expansion. This allows the ProSafe-RS system to recognize and integrate the new hardware immediately upon installation.
Can I install this unit in a Zone 2 hazardous area?
No. The "5" suffix code for this specific model indicates "no explosion protection." You must install this unit in a non-hazardous, safe area or within a suitably certified purged enclosure if used in a hazardous environment.
What is the function of the /CU2T option?
The /CU2T is a Connector Unit with an integrated Terminator [Part number: S9343FA]. It terminates the ESB bus at the end of the node chain, ensuring proper impedance matching and preventing data corruption across the ProSafe-RS network.
How do I verify the redundancy status of the power supplies?
The Safety Node Unit provides internal diagnostic signals to the ProSafe-RS controller. You can monitor the health of both power supply modules through the system's engineering workstation to ensure both circuits are operational.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Optimizing Power Supply Sizing for Industrial Automation Systems
The power supply is the silent heartbeat of any industrial automation system. While engineers often prioritize processors and communication protocols, a stable power architecture remains the most critical factor for long-term reliability. In my 15 years of experience, I have found that neglecting power supply sizing often leads to ghost errors, intermittent field device failures, and costly production downtime.
PLC vs. PAC: Navigating Selection in Modern Industrial Automation
Selecting the right controller is a fundamental decision in industrial automation. While the lines between Programmable Logic Controllers (PLC) and Programmable Automation Controllers (PAC) often blur, understanding their core architectural differences is essential for system reliability. Both controllers serve as the brain of control systems, yet their specific capabilities dictate their suitability for various factory automation tasks.
Transforming Textile Manufacturing: The Strategic Integration of Industrial Automation and AI
The textile industry stands at a critical technological crossroads. Legacy operations must now embrace digital transformation to remain competitive in a global market. By integrating advanced industrial automation—ranging from PLC-controlled machinery to sophisticated AI-driven analytics—manufacturers can significantly boost productivity, minimize material waste, and elevate overall product quality.