Product Description
The SNB10D-223/CU2N is a rack-mountable Safety Node Unit designed by Yokogawa for the ProSafe-RS Safety Instrumented System (SIS). Serving as a local I/O expansion hub, it enables secure communication between field devices and the central safety controller. Built for high-availability environments, this version supports 100–120 V AC input and features ISA Standard G3 conformal coating for enhanced resistance to corrosive gases. The unit is ideal for Emergency Shutdown (ESD) and Fire & Gas (F&G) systems in harsh industrial sectors such as oil & gas and chemical processing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | SNB10D-223/CU2N |
| System Series | ProSafe-RS |
| Product Type | Safety Node Unit (19-inch rack-mountable) |
| Power Supply Configuration (-2) | Dual-redundant power support |
| Input Voltage (-2) | 100–120 V AC (50/60 Hz) |
| Environmental Rating (-3) | ISA Standard G3 with wide temperature range |
| Connector Option (/CU2N) | Standard connector unit for ESB Bus (non-terminating) |
| I/O Capacity | Up to 8 Safety I/O modules (SDV series) per node |
| Communication | High-speed ESB Bus interface |
| Safety Compliance | SIL3 capable within certified ProSafe-RS configuration |
| Dimensions | 482.6 mm x 221.5 mm x 21.3 mm (W x H x D) |
| Net Weight | 8.0 kg |
Industrial Application and Integration
The SNB10D-223/CU2N is widely deployed in:
-
Emergency Shutdown (ESD) systems for oil & gas, chemical, and petrochemical plants
-
Fire & Gas (F&G) systems, integrating sensors and actuators with SIL3-rated safety loops
-
Intermediate ESB bus nodes, where signals continue to downstream nodes via the non-terminating /CU2N connector
Its dual-redundant power architecture ensures continuous operation even if one power source fails. The G3 conformal coating protects against corrosion from sulfur dioxide, hydrogen sulfide, and other harsh gases, extending the lifespan of the module in demanding environments.
Technical FAQs
1. What does the G3 rating signify?
It indicates that the internal circuit boards are coated to resist corrosion from industrial gases such as H₂S and SO₂.
2. Is the SNB10D-223/CU2N hot-swappable?
The I/O modules within the node are generally hot-swappable. The node itself should remain powered with redundant communication and power paths to ensure uninterrupted safety loop operation.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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