Excellent PLC
| Company Information | ||||||||
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| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Overview
The Yokogawa SNB10D-225/CU2N Safety Node Unit is a high-reliability safety interface designed for integration with the ProSafe-RS Safety Instrumented System. It transmits analog and contact signals from field devices to the safety control unit via the Ethernet Safety Bus (ESB) and supplies power to connected I/O modules. Engineered for SIL 3 safety applications, this unit ensures robust performance under industrial conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SNB10D-225/CU2N |
| Power Supply | 100–120 V AC, 50/60 Hz 220–240 V AC, 50/60 Hz 24 V DC |
| Power Consumption | 100–120 V AC: 200 VA 220–240 V AC: 230 VA 24 V DC: 5.5 A |
| I/O Module Slots | Up to 8 modules |
| Safety Integrity Level (SIL) | SIL 3 |
| Operating Temperature | -20°C to 70°C |
| Dimensions (W × H × D) | 482.6 × 221.5 × 205 mm |
| Weight | 5.9 kg |
| Mounting | Rack mountable, 4 × M5 screws |
| Redundancy | Dual-redundant power supply, software license for node expansion (R3) |
| Connector Unit | CU2N (for ESB Bus) |
| Explosion Protection | ISA Standard G3 |
Applications
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Industrial process automation control systems
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Production line safety monitoring
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Robotics and machinery safety
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Energy management and critical plant operations
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Hazardous area process control
Advantages
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Supports SIL 3 safety integrity for critical applications
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Modular design with up to 8 I/O module slots for flexible expansion
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Dual-redundant power supply ensures uninterrupted operation
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Wide operating temperature range for harsh industrial environments
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Compact rack-mountable form factor simplifies system integration
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High reliability and compliance with industrial safety standards
FAQs
1. What is the maximum number of I/O modules supported?
The unit supports up to 8 I/O modules.
2. What safety integrity level does this unit comply with?
It is certified for SIL 3 applications.
3. What types of power supply does the SNB10D-225/CU2N accept?
It accepts 100–120 V AC, 220–240 V AC, and 24 V DC power supplies.
4. What is the operating temperature range?
The unit operates between -20°C and 70°C.
5. Can the unit be installed in a standard rack?
Yes, it is rack-mountable using four M5 screws.
6. Does the unit support redundancy?
Yes, it includes dual-redundant power supplies and node expansion capability.
7. What is the weight and dimensions of the unit?
Dimensions: 482.6 × 221.5 × 205 mm; Weight: 5.9 kg.
8. What type of connector unit is used?
The SNB10D-225 uses a CU2N connector unit for ESB Bus integration.
9. Is this unit suitable for hazardous areas?
It complies with ISA Standard G3 for explosion protection.
10. Which industrial systems is it primarily used with?
It is primarily used with ProSafe-RS safety instrumented systems.
Recommended Related Models
| Model | Description | I/O Module Slots | SIL | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| SNB10D-225/CU2T | Safety Node Unit with CU2T connector | 8 | SIL 3 | 482.6 × 221.5 × 205 | 5.9 |
| SNB10D-220/CU2N | Safety Node Unit, ESB interface | 6 | SIL 3 | 482.6 × 221.5 × 205 | 5.8 |
| SNB10D-210/CU2N | Safety Node Unit, compact version | 4 | SIL 3 | 482.6 × 221.5 × 180 | 5.2 |
| SNB10D-225/CU1N | Safety Node Unit, single connector | 8 | SIL 3 | 482.6 × 221.5 × 205 | 5.9 |
| SNB10D-230/CU2N | Safety Node Unit, high power version | 8 | SIL 3 | 482.6 × 221.5 × 210 | 6.1 |
| SNB10D-240/CU2T | Safety Node Unit with enhanced redundancy | 8 | SIL 3 | 482.6 × 221.5 × 215 | 6.2 |
Popular Yokogawa Models
| Model | Description | I/O Module Slots | SIL | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| SNB10D-225 | Standard Safety Node Unit | 8 | SIL 3 | 482.6 × 221.5 × 205 | 5.9 |
| SNB10D-220 | Safety Node Unit, standard version | 6 | SIL 3 | 482.6 × 221.5 × 205 | 5.8 |
| SNB10D-210 | Compact Safety Node Unit | 4 | SIL 3 | 482.6 × 221.5 × 180 | 5.2 |
| SNB10D-240 | High-reliability Node Unit | 8 | SIL 3 | 482.6 × 221.5 × 215 | 6.2 |
| SNB10D-230 | High-power Safety Node Unit | 8 | SIL 3 | 482.6 × 221.5 × 210 | 6.1 |
| SNB10D-225/CU2T | Node Unit with CU2T connector | 8 | SIL 3 | 482.6 × 221.5 × 205 | 5.9 |
