Yokogawa SNB10D-243/C2UT Safety Node Unit

The Yokogawa SNB10D-243/C2UT Safety Node Unit is a critical component of the ProSafe-RS safety instrumented system. Designed for rack-mount installation, it provides reliable communication between field devices and the Safety Control Unit (SCU) through the ESB (Ethernet Safety Bus) and supplies power to I/O modules. Its dual-redundant power supply ensures continuous operation in industrial environments.

Technical Specifications

Applications

• Integration within ProSafe-RS safety instrumented systems

• Monitoring and controlling critical industrial processes

• Providing a reliable interface between field I/O modules and SCU

• Suitable for chemical, power generation, oil & gas, and petrochemical industries

Advantages

• High Reliability: Dual-redundant power supply ensures uninterrupted operation

• Compact and Rack-Mountable: Optimized for standard 19-inch rack systems

• Wide Operating Range: Functions in harsh industrial temperatures (-20°C to 70°C)

• Standards Compliance: Meets ISA G3 safety and reliability specifications

• Easy Integration: CU2T facilitates simple connection and ESB termination

FAQ

1. What is the primary function of the SNB10D-243/C2UT?

It acts as a safety node facilitating communication between field devices and the Safety Control Unit in ProSafe-RS systems.

2. What type of power supply does it require?

The unit uses a 24 VDC dual-redundant power supply to ensure continuous operation.

3. Can it operate in extreme temperatures?

Yes, it supports an operating range from -20°C to 70°C.

4. How is the unit installed?

It is rack-mountable, compatible with standard 19-inch racks, and uses M5 screws for installation.

5. What connectivity does it support?

It communicates via the ESB (Ethernet Safety Bus) to connect field devices and I/O modules.

6. Is it compatible with older ProSafe-RS modules?

Yes, it supports backward-compatible communication with legacy I/O modules through the ESB.

7. What is CU2T?

CU2T is a connector unit with terminator, providing easy ESB connection and bus termination.

8. What are the safety standards compliance?

The unit meets ISA Standard G3 specifications for industrial safety and reliability.

9. What industries commonly use this unit?

Chemical, petrochemical, power generation, and oil & gas industries predominantly use this unit.

10. Can it be replaced by newer models?

Yes, SNB10D-245/C2UT is the updated model offering similar functionalities with enhanced performance.