ProductPRODUCT
Featured products
Contact Us
- Yokogawa
- SNB10D-213/CU2T
- Safety Node Unit
- Japan
- 482.6 x 221.5 x 205 mm
- 5.9 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 7
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview
The Yokogawa SNB10D-213/CU2T Safety Node Unit is a variant of Yokogawa’s ProSafe-RS distributed safety architecture. It functions as a remote safety I/O node, responsible for collecting field signals, distributing power to I/O modules, and communicating with the Safety Control Unit via the ESB bus.
The /CU2T configuration typically indicates a connector unit with terminator support, ensuring stable ESB bus integrity in redundant safety system architectures.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | SNB10D-213/CU2T |
| Product Type | Safety Node Unit |
| System Compatibility | ProSafe-RS / SIS |
| Function | Safety I/O node + ESB communication + power distribution |
| Communication Protocol | ESB Bus |
| Installation | 19-inch rack mounted |
| Dimensions | 482.6 x 221.5 x 205 mm |
| Weight | 5.9 kg |
| Power Supply Options | 100–120 V AC / 220–240 V AC / 24 V DC |
| Redundancy | Dual-redundant ESB and power architecture support |
| Operating Temperature | -20°C to +70°C |
| Humidity | 5%–95% RH (non-condensing) |
| Country of Manufacture | Japan |
Function and Working Principle
The SNB10D-213/CU2T operates as a distributed safety node, performing three core functions:
- Acquisition of analog and digital field signals
- Power distribution to connected I/O modules
- ESB bus communication with Safety Control Units
System Data Flow
Field Devices → SNB10D Node → ESB Bus → Safety Control Unit (SCU)
This architecture ensures deterministic, fault-tolerant, and SIL-oriented communication, which is essential for emergency shutdown and process safety systems.
Role in Industrial Control Systems
Within Yokogawa ProSafe-RS systems, the SNB10D-213/CU2T serves as a local safety I/O hub, connecting:
- Safety transmitters (pressure, temperature, flow, level)
- Emergency shutdown switches and field contacts
- Safety digital and analog I/O modules
- Safety Control Stations (SCS)
- ESB / optical ESB network infrastructure
It significantly reduces field wiring complexity while improving system scalability and maintainability.
Industrial Applications
The SNB10D-213/CU2T is widely used in:
- Safety Instrumented Systems (SIS)
- Emergency Shutdown Systems (ESD)
- Oil and gas upstream and downstream facilities
- Petrochemical and refining plants
- Offshore platforms
- Power generation stations
- Chemical processing industries
- Large-scale industrial automation systems
It is especially important in environments where high reliability and system redundancy are required.
Installation and System Integration
Proper installation ensures safe and stable operation:
- Install in standard 19-inch industrial racks
- Ensure ESB bus cabling uses correct termination (/CU2T configuration)
- Maintain proper grounding and shielding practices
- Configure redundancy according to system design
- Avoid mechanical stress on connectors
- Perform full system verification during commissioning
Correct setup ensures stable communication and long-term system reliability.
Compatible System Components
The SNB10D-213/CU2T works with:
- Yokogawa ProSafe-RS safety controllers
- ESB / optical ESB bus coupler modules (SEC401 / SEC402 series)
- Safety analog and digital I/O modules
- Terminal boards (SEA / SED / SBD series)
- Power supply modules for node operation
- Field instrumentation devices
- Engineering and maintenance stations
These components form a complete SIL-capable distributed safety system architecture.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| SNB10D-213/CU2T | Safety Node Unit | ESB terminator connector option | SIS / ESD systems |
| SNB10D-213/CN2T | Safety Node Unit | Alternative connector variant | Safety systems |
| SNB10D | Safety Node Unit | Base platform | General safety applications |
| SNB10D-4 | Safety Node Unit | Updated revision | Modern SIS architectures |
| SCS Safety Controller | Control Unit | Central safety processing | System-level control |
Key Advantages
- SIL3-oriented safety system design
- ESB communication with terminator-optimized configuration (/CU2T)
- High reliability for critical industrial processes
- Supports redundant system architecture
- Integrated power distribution for I/O modules
- Scalable distributed safety architecture
- Strong diagnostics and fault detection capability
- Designed for continuous 24/7 operation
- Proven performance in hazardous environments
Technical FAQs
What is SNB10D-213/CU2T used for?
It is a safety node unit used in Yokogawa ProSafe-RS systems to connect field devices and manage ESB communication with power distribution.
What does “/CU2T” mean?
It indicates a connector unit configuration with ESB termination support, improving bus stability.
Is it a CPU or controller?
No. It is a distributed safety I/O node, not a processor module.
Difference between CU2T and CN2T?
Both are connector variants; CU2T typically includes termination-focused configuration for ESB bus stability.
Conclusion
The Yokogawa SNB10D-213/CU2T Safety Node Unit is a key component in industrial safety automation systems. It provides reliable field signal acquisition, ESB communication with termination support, and integrated power distribution for distributed I/O modules. With its redundant architecture and SIL-oriented design, it plays a critical role in ensuring safe, stable, and continuous operation in complex industrial environments.