TRICONEX 5211S2
Redundant Digital Input Module
Product Overview
The TRICONEX 5211S2 is a safety-certified redundant digital input module designed for TRICONEX Tricon safety instrumented systems (SIS). As a core component of Schneider Electric’s TRICONEX portfolio, this module provides high-integrity monitoring of digital input signals in mission-critical industrial environments—where system failure could lead to safety risks, production losses, or environmental harm. Its triple-modular redundant (TMR) architecture ensures fault tolerance and compliance with global safety standards like IEC 61508 (SIL 3) and EN 50155.
Key Features
- • Triple-Modular Redundant (TMR) design for maximum fault tolerance
- • 16 isolated digital input channels (24V DC) with channel-to-channel isolation
- • IEC 61508 SIL 3 and TÜV Rheinland certification for safety-critical applications
- • Self-diagnostic capabilities (channel faults, power supply errors) with real-time status reporting
- • Hot-swappable design for maintenance without system shutdown or safety loop interruption
- • Compatibility with TRICONEX Tricon 3000/4000/5000 safety systems
Technical Specifications
| Parameter | Details |
|---|---|
| Number of Channels | 16 independent digital inputs (24V DC) |
| Input Voltage Range | 18V DC (minimum on) – 30V DC (maximum on); ≤5V DC (off) |
| Isolation | 250V RMS (channel-to-channel); 500V RMS (channels-to-backplane) |
| Response Time | ≤10ms (input state change to backplane communication) |
| Operating Temperature | 0°C to +60°C (+32°F to +140°F); -40°C to +70°C (extended range option) |
| Safety Certification | IEC 61508 SIL 3; EN 50155 (for railway applications); ATEX/IECEx Zone 2 |
Typical Applications
- Oil and gas upstream/downstream safety loops (e.g., emergency shutdown, fire suppression)
- Chemical and petrochemical process safety systems
- Power generation (nuclear, fossil, renewable) safety instrumented functions
- Pharmaceutical manufacturing safety-critical monitoring
- Railway and mass transit safety control systems
- Marine offshore platform emergency systems
