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Product Introduction
The Yokogawa SSC50D-S2543 Duplexed Safety Control Unit is a high-reliability safety system designed for critical industrial applications. It features a redundant (duplexed) architecture to ensure continuous operation and fail-safe performance, making it ideal for environments where safety and uptime are paramount. This unit is part of Yokogawa’s extensive safety instrumented systems (SIS) portfolio, providing robust protection for processes in oil & gas, chemical, power generation, and other high-risk industries.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | SSC50D-S2543 |
| Type | Duplexed Safety Control Unit |
| Input Voltage | 24 VDC (±10%) |
| Power Consumption | ≤ 15 W |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 10% to 90% RH (non-condensing) |
| Dimensions | 482.6 x 266 x 88.1 mm |
| Weight | 8.5 kg |
| Safety Certification | SIL 3 (IEC 61508), TÜV certified |
| Communication | Ethernet, RS-485 |
| Redundancy | Dual-channel (1oo2D architecture) |
| Response Time | ≤ 100 ms |
Applications
The SSC50D-S2543 is widely used in industries where safety and reliability are critical. Key applications include:
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Oil & Gas: Emergency shutdown systems (ESD), fire & gas detection.
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Chemical Plants: Process safety interlocks, hazardous material handling.
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Power Generation: Turbine protection, boiler safety systems.
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Pharmaceutical: Batch process safety controls.
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Manufacturing: Automated safety shutdowns for heavy machinery.
Product Advantages
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High Reliability: Duplexed architecture ensures continuous operation even if one channel fails.
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Fast Response Time: ≤ 100 ms reaction time for critical safety actions.
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Certified Safety Standards: Complies with SIL 3 (IEC 61508) and TÜV certifications.
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Flexible Communication: Supports Ethernet and RS-485 for seamless integration with control systems.
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Robust Design: Operates in harsh industrial environments (-20°C to +60°C).
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Easy Maintenance: Modular design allows for quick replacement and troubleshooting.
FAQ
1. What is the redundancy architecture of the SSC50D-S2543?
The unit uses a 1oo2D (1-out-of-2 with diagnostics) redundancy model, ensuring high availability and fault detection.
2. What safety certifications does this unit hold?
It is SIL 3 certified per IEC 61508 and TÜV approved.
3. Can the SSC50D-S2543 communicate with third-party PLCs?
Yes, it supports standard protocols like Modbus over RS-485 and Ethernet for integration.
4. What is the maximum input voltage tolerance?
The unit accepts 24 VDC with a ±10% variation (21.6 V to 26.4 V).
5. How does the unit handle fault diagnostics?
It includes built-in self-diagnostics to detect failures in input/output modules and processing units.
6. Is hot-swapping of modules supported?
No, the unit does not support hot-swapping; power must be cycled for module replacement.
7. What is the maximum response time for safety triggers?
The worst-case response time is ≤ 100 ms.
8. Can it operate in explosive atmospheres?
No, additional explosion-proof housing is required for hazardous areas.
9. Does it support wireless communication?
No, only wired Ethernet and RS-485 are available.
10. What is the firmware update process?
Firmware can be updated via a secure Ethernet connection using Yokogawa’s proprietary software.
Recommended Related Models
| Model Number | Description | Key Feature |
|---|---|---|
| SSC50D-S2542 | Simplex Safety Control Unit | Single-channel, cost-effective |
| SSC50D-S2544 | Triple Modular Redundant (TMR) Unit | 2oo3D architecture for ultra-high reliability |
| SSC50D-S2545 | High-Density I/O Safety Unit | Expanded I/O capacity |
| SSC50D-S2546 | Safety Controller with HART Support | Integrated HART communication |
| SSC50D-S2547 | Extended Temperature Range Unit | Operates from -40°C to +70°C |
| SSC50D-S2548 | Cyber-Secure Safety Controller | Enhanced cybersecurity protocols |
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