Description
YOKOGAWA SCP401-11 Product Overview
The YOKOGAWA SCP401-11 is a high-performance safety communication processor designed for Yokogawa’s ProSafe-RS safety instrumented systems (SIS). This critical component provides secure, redundant communication between safety controllers and operator workstations in mission-critical process safety applications.
Key Features
✔ Dual-redundant communication paths for fault tolerance
✔ SIL 3 certified per IEC 61508
✔ High-speed safety bus communication
✔ Advanced diagnostics for system integrity monitoring
✔ Hot-swappable design for maintenance without shutdown
Technical Specifications
| Parameter | Specification |
| Model | SCP401-11 |
| Manufacturer | YOKOGAWA |
| Type | Safety Communication Processor |
| Safety Certification | SIL 3 (IEC 61508) |
| Redundancy | 1:1 Redundant configuration |
| Communication Speed | 1Gbps Ethernet |
| Protocols | Vnet/IP, ProSafe-RS Safety Bus |
| MTBF | >150,000 hours |
| Power Supply | 24V DC (dual redundant inputs) |
| Operating Temperature | 0°C to +55°C |
| Dimensions | 200mm (W) × 133mm (H) × 85mm (D) |
YOKOGAWA SCP401-11
Main Features & Benefits
1. Safety-Critical Reliability
Dual-redundant architecture ensures continuous operation
Automatic failover (<50ms switchover time)
Built-in self-tests for continuous diagnostics
2. High-Performance Communication
1Gbps Ethernet backbone for safety system data
Deterministic communication for time-critical safety functions
Secure data transmission with CRC checking
3. Maintenance Advantages
Hot-swappable modules minimize downtime
LED status indicators for quick diagnostics
Predictive failure alerts via system software
Application Field
Process Safety Systems
Emergency Shutdown Systems (ESD)
Fire & Gas Protection Systems
Burner Management Systems
Turbine Overspeed Protection
Critical Industries
Oil & Gas (Offshore/Onshore)
Petrochemical Plants
Nuclear Power Facilities
Pharmaceutical Manufacturing
YOKOGAWA SCP401-11
Related Products
| Model | Description |
| SCP401-10 | Non-redundant version |
| FSC401 | Safety Controller |
| HIS4000-S | Safety Operator Station |
| YPS100-S | Safety Power Supply |
Installation & Maintenance
Installation Requirements
Certified safety engineers required for installation
Proper grounding per Yokogawa specifications
Redundant power supplies mandatory
Maintenance Procedures
Annual diagnostic tests
Quarterly connection checks
Firmware updates per safety bulletins
