Yokogawa SNB10D-213/CN2N Safety Node Unit

The Yokogawa SNB10D-213/CN2N Safety Node Unit is a high-performance safety I/O interface designed for integration within the ProSafe-RS Safety Instrumented System. It provides reliable communication between field I/O modules and the Safety Control Unit (SCU) through the ESB (Ethernet Safety Bus). The unit is rack-mountable and supports dual-redundant power supplies for enhanced system reliability.

Technical Specifications

Applications

• Safety instrumented systems in oil & gas, chemical, and power generation industries.

• Interface for critical field I/O signals requiring high reliability.

• Redundant safety monitoring and control.

• Integration in modular control architectures for scalable safety solutions.

Advantages

• High Reliability: Dual-redundant power and bus interface ensure continuous operation.

• Modular Design: Easily integrates with multiple Safety Node Units and SCU.

• Flexible Power Options: AC and DC compatibility allows wide deployment scenarios.

• Rack-Mountable Form Factor: Optimized for industrial control cabinets.

• Standards Compliance: Fully compliant with ProSafe-RS safety protocols.

Frequently Asked Questions (FAQ)

1. What is the main function of the SNB10D-213/CN2N?

It serves as a communication interface between field I/O modules and the SCU within a ProSafe-RS safety system.

2. How many Safety Node Units can be connected to one SCU?

Up to 9 Safety Node Units can be connected via the ESB bus.

3. Does the unit support redundant power supply?

Yes, it features dual-redundant power supply modules to enhance reliability.

4. What types of power input are supported?

The unit supports 100–120 V AC, 220–240 V AC, and 24 V DC.

5. Can the unit be mounted in standard control cabinets?

Yes, it is designed for 19-inch rack mounting.

6. What are the unit’s dimensions and weight?

Dimensions are 482.6 x 221.5 x 205 mm, and weight is 5.9 kg.

7. Which communication protocol does the unit use?

It uses the ESB (Ethernet Safety Bus) protocol.

8. Is the unit compatible with all ProSafe-RS I/O modules?

Yes, it supports standard ProSafe-RS I/O modules connected via ESB bus.

9. What industries commonly use this unit?

Oil & gas, chemical, power generation, and other process industries with safety requirements.

10. Does the unit provide any status diagnostics?

Yes, it provides diagnostic outputs to monitor the health of the node and power modules.