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- Yokogawa
- S2SC70D
- Safety Control Unit
- Japan
- 264.4 × 482.6 × 399.2 mm
- 13 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa S2SC70D is a Safety Control Unit (SCU) designed for the Yokogawa ProSafe-RS Safety Instrumented System (SIS). It serves as the central controller responsible for executing safety logic, monitoring field signals, and managing communication with distributed I/O modules and supervisory control systems.
Designed for high-availability industrial applications, the S2SC70D supports redundant system architectures and continuous operation, making it suitable for safety-critical processes that require dependable protection and control.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | S2SC70D |
| Product Type | Safety Control Unit |
| System Application | ProSafe-RS Safety Instrumented System (SIS) |
| Function | Safety logic execution and system control |
| Processor Support | Compatible with Yokogawa safety processor modules |
| I/O Support | N-IO / FIO systems |
| Communication | Vnet/IP industrial communication network |
| Redundancy | Supports redundant controller configuration |
| Mounting Type | Rack-mounted |
| Dimensions | 264.4 × 482.6 × 399.2 mm |
| Weight | 13 kg |
Function and Working Principle
The S2SC70D Safety Control Unit serves as the central platform for Yokogawa safety control systems. It hosts processor modules, communication interfaces, and supporting hardware required to execute safety logic and coordinate system operation.
The unit receives process information from connected I/O modules, processes safety programs, and sends output commands to field devices when required. It also communicates with engineering workstations and distributed control systems through the Vnet/IP network for configuration, diagnostics, and system monitoring.
When configured in a redundant architecture, the Safety Control Unit provides continuous operation by allowing a standby unit to automatically assume control if the active controller becomes unavailable.
Key Features
- Central controller for ProSafe-RS safety systems
- Supports redundant controller architecture
- High-speed communication via Vnet/IP
- Compatible with N-IO and FIO systems
- Reliable execution of safety logic programs
- Rack-mounted modular construction
- Designed for continuous industrial operation
- High availability for critical process applications
System Role
The S2SC70D functions as the core safety controller within the ProSafe-RS architecture, coordinating communication between processor modules, I/O systems, field devices, and supervisory control systems.
Typical System Architecture
Field Devices → N-IO / FIO Modules → S2SC70D Safety Control Unit → Vnet/IP Network → Engineering Workstation / DCS / Operator Station
Industrial Applications
The S2SC70D is widely used in:
- Oil and gas production facilities
- Petrochemical and chemical plants
- Refineries
- LNG processing terminals
- Power generation plants
- Offshore platforms
- Pipeline safety systems
- Emergency Shutdown (ESD) systems
- Fire and Gas (F&G) protection systems
- Industrial process safety applications
Installation Guidelines
- Install the unit in a compatible Yokogawa control cabinet or equipment rack.
- Ensure adequate ventilation around the control unit.
- Install compatible processor and communication modules before system startup.
- Connect N-IO or FIO modules according to system design.
- Configure Vnet/IP communication parameters during commissioning.
- Verify redundancy settings if dual-controller operation is required.
- Perform complete functional testing before placing the system into service.
Compatible Components
The S2SC70D is compatible with:
- Yokogawa S2CP471 Processor Modules
- Yokogawa N-IO Modules
- Yokogawa FIO Modules
- Yokogawa ProSafe-RS Engineering Software
- Yokogawa Vnet/IP Communication Modules
- Yokogawa Power Supply Units
- Yokogawa Operator and Engineering Stations
Alternative Models
| Model | Description |
|---|---|
| SSC60D | Safety Control Unit |
| S2CP471 | Processor Module |
| S2CP470 Series | Safety processor modules |
| ProSafe-RS Controller Series | Safety control platform |
Advantages
- High-reliability safety control platform
- Supports redundant system architecture
- Modular design for flexible system expansion
- High-speed communication with distributed I/O
- Stable operation in critical industrial environments
- Simplified maintenance and module replacement
- Designed for continuous 24/7 operation
- Suitable for SIL-rated safety applications
Frequently Asked Questions
What is the S2SC70D used for?
The S2SC70D is used as the Safety Control Unit in Yokogawa ProSafe-RS systems, providing centralized execution of safety logic and system management.
Does the S2SC70D support redundant operation?
Yes. It supports redundant controller configurations to improve system availability and operational reliability.
Which communication network does it use?
The unit communicates through the Vnet/IP industrial control network.
What systems is it compatible with?
It is designed for Yokogawa ProSafe-RS Safety Instrumented Systems and supports N-IO and FIO distributed I/O architectures.
Conclusion
The Yokogawa S2SC70D Safety Control Unit is a high-performance controller engineered for safety-critical industrial automation. With its redundant architecture support, modular design, high-speed Vnet/IP communication, and seamless integration with ProSafe-RS systems, it delivers reliable protection and continuous operation for demanding process safety applications.