TRICONEX 3625 is a
Redundant Digital Input Module (also known as a "Safety Input Module") designed by TRICONEX (a brand under Rockwell Automation) for use in Tricon fault-tolerant safety systems. It is a core component in industrial safety instrumented systems (SIS), specializing in collecting and processing digital signals from field devices with high reliability and fault tolerance.
The TRICONEX 3625 is engineered to enable safe, real-time acquisition of digital input signals (e.g., from sensors, switches, or alarms) in critical industrial environments. Its primary role is to act as a bridge between field devices and the Tricon controller, ensuring accurate signal transmission while maintaining system integrity through redundant design.
Key functions include:
- Digital Signal Acquisition: Collects discrete on/off signals (e.g., limit switch status, valve position feedback, or alarm triggers) from field equipment.
- Redundancy & Fault Tolerance: Supports dual-module redundancy (1+1) to eliminate single points of failure, ensuring continuous operation even if one module fails.
- Safety Validation: Integrates with the Tricon controller’s Triple Modular Redundancy (TMR) architecture to validate signal integrity, preventing erroneous data from affecting safety logic.
| Parameter | Details |
|---|
| Input Channels | 16 isolated digital input channels (individually isolated for noise immunity). |
| Input Type | Dry contacts (relay contacts) or wet contacts (voltage-driven signals). |
| Operating Voltage | 24V DC (typical; compatible with 12-30V DC ranges for flexibility). |
| Response Time | <10 ms (maximum delay from signal input to controller recognition). |
| Isolation | Channel-to-channel isolation: ≥1500V AC (for 1 minute); Module-to-backplane isolation: ≥2500V AC. |
| Redundancy Support | Dual-module redundancy (1+1 configuration); auto-switchover with no downtime. |
| Operating Temperature | 0°C to 60°C (industrial grade; extended range optional with cooling). |
| Power Requirement | 24V DC (redundant power inputs to avoid single power supply failure). |
| Safety Certification | Complies with IEC 61508 (SIL 3), TÜV Rheinland certified; meets ISA 84.00.01 standards for SIS. |
- Triple Modular Redundancy (TMR) Integration: Works with the Tricon controller’s TMR architecture (three parallel processing paths with voting logic) to detect and correct faults, ensuring signal accuracy.
- Diagnostics: Built-in self-diagnostic functions (e.g., open/short circuit detection on input channels, power supply monitoring) with status indicators (LEDs) for quick troubleshooting.
- Electromagnetic Compatibility (EMC): Designed to resist noise from industrial environments (e.g., motor interference, transient voltages) via filtered inputs and isolation.
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