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Yokogawa SNB10D-243/C2UN Safety Node Unit
The Yokogawa SNB10D-243/C2UN Safety Node Unit is a rack-mountable module designed for integration with ProSafe-RS safety instrumented systems. It ensures reliable signal transmission from field devices to safety controllers, supporting SIL 3 safety integrity levels while providing stable power to connected I/O modules.
Product Specifications
| Parameter | Specification |
|---|---|
| Model | SNB10D-243/C2UN |
| Power Supply | 100–120 V AC / 220–240 V AC / 24 V DC |
| Power Consumption | 100–120 V AC: 200 VA 220–240 V AC: 230 VA 24 V DC: 5.5 A |
| Dimensions | 482.6 × 221.5 × 205 mm |
| Weight | 5.9 kg |
| Mounting | Rack-mounted with four M5 screws and insulation bushes |
| Safety Integrity Level | SIL 3 |
| Connectivity | ESB (Ethernet Safety Bus) |
| Operating Temperature | -20 to 70°C |
| Conformity | Compliant with relevant safety and EMC standards |
Applications
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Transmission of analog and contact signals from field devices to safety controllers
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Integration into ProSafe-RS safety instrumented systems
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Industrial process monitoring in petrochemical, power generation, and chemical plants
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High-reliability SIL 3 safety applications requiring redundant and stable communication
Advantages
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High safety integrity level (SIL 3) ensures reliable operation in critical environments
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Dual-redundant power supply options for uninterrupted operation
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Rack-mountable design enables easy integration into existing control cabinets
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Robust construction supports wide operating temperature ranges and industrial conditions
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ESB Bus connectivity allows seamless communication with other ProSafe-RS nodes
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Compact size and standardized mounting facilitate efficient system layout
FAQ
1. What is the maximum SIL rating of the SNB10D-243/C2UN?
It is certified for SIL 3 applications, suitable for high-reliability safety systems.
2. Can it support both AC and DC power supplies?
Yes, the unit supports 100–120 V AC, 220–240 V AC, and 24 V DC inputs.
3. What are the dimensions and weight of the unit?
The unit measures 482.6 × 221.5 × 205 mm and weighs 5.9 kg.
4. What type of mounting is required?
Rack-mounting using four M5 screws with insulation bushes is required.
5. What communication protocol does it use?
It uses the ESB (Ethernet Safety Bus) protocol for safe and reliable data transfer.
6. Can the unit operate in high-temperature environments?
Yes, it operates within a temperature range of -20 to 70°C.
7. Is this unit suitable for redundancy configurations?
Yes, dual-redundant power supply options are available to enhance system reliability.
8. What industries typically use this unit?
Petrochemical, chemical, power generation, and other industries requiring SIL 3 safety systems.
9. Can the SNB10D-243/C2UN interface with other ProSafe-RS modules?
Yes, it is fully compatible with other ProSafe-RS safety nodes and I/O modules.
10. Is the unit compliant with safety and EMC standards?
Yes, it conforms to relevant international safety and electromagnetic compatibility standards.
Recommended Related Models
| Model | Key Parameters |
|---|---|
| SNB10D-245/CU2N | 24 V DC, Rack-mount, SIL 3 |
| SNB10D-225/CU2T | 100–240 V AC, Rack-mount, SIL 3 |
| SNB10D-243/CU2T | 24 V DC, Rack-mount, SIL 3 |
| SNB10D-245/C2UN | 24 V DC, Rack-mount, Dual Redundant |
| SNB10D-243/CU2N | 24 V DC, Rack-mount, SIL 3 |
| SNB10D-225/C2UN | 100–240 V AC, Rack-mount, SIL 3 |
Popular Yokogawa Safety Units
| Model | Key Parameters |
|---|---|
| SNB20D-243 | 24 V DC, Advanced I/O, SIL 3 |
| SNB30D-243 | 24 V DC, Rack-mount, SIL 3, High Density I/O |
| SNB40D-245 | 24 V DC, Rack-mount, SIL 3, Redundant Bus |
| SNB50D-243 | 24 V DC, Modular, SIL 3 |
| SNB60D-245 | 24 V DC, High-performance, SIL 3 |
| SNB70D-243 | 24 V DC, Rack-mount, Enhanced Safety Features |
