TRICONEX 2651
Product Name
TRICONEX 2651 8-Channel Discrete Output Module; TMR Safety System DO Card for 24 V DC Load Switching (TRICONEX by Schneider Electric Process Safety).
Product Description
The TRICONEX 2651 is a rugged, 8-channel discrete output module engineered for TRICONEX TMR safety controllers, targeting high-risk industrial applications such as oil & gas refining, chemical processing, power generation, and petrochemical plants. It is specialized in switching 24 V DC safety-critical loads (e.g., solenoid valves, alarm horns, indicator lights, and interlock relays) based on commands from the TMR safety controller, ensuring deterministic and fault-tolerant operation.
Built on TRICONEX’s TMR architecture, the module supports triple modular redundancy to eliminate single points of failure—each output channel’s state is cross-validated across three redundant modules, with majority voting logic to maintain correct operation even if one module fails. Key features include isolated output channels to prevent cross-channel interference and ground loops, hot-swappable design for online maintenance without system shutdown, and built-in diagnostic functions for real-time monitoring of channel health (e.g., short-circuit detection, load fault reporting).
The TRICONEX 2651 is compatible with TRICONEX 3000, 4000, and 5000 series TMR safety controllers, and complies with global safety standards (e.g., IEC 61508 SIL 3) to meet the strict requirements of safety instrumented systems. It is ideal for applications where reliable load switching and fault detection are critical to preventing process incidents, protecting personnel, and minimizing equipment damage.
Key Parameters & Specifications (Consolidated)
| Category | Specification | Notes (Critical Distinctions) |
|---|---|---|
| Manufacturer | TRICONEX (Schneider Electric Process Safety) | Safety-focused TMR system specialist |
| Product Type | 8-channel discrete output module | TMR-compatible; for 24 V DC safety-critical load switching |
| Primary Function | Execution of safety controller commands; 24 V DC load switching; channel isolation; fault diagnostics; TMR majority voting | Controls discrete field devices in safety instrumented systems |
| Output Channels | 8 independent, isolated channels | Each channel is galvanically isolated from others and backplane |
| Output Signal Type | 24 V DC (sourcing/sinking configurable via TriStation software) | Supports both sourcing (high-side switch) and sinking (low-side switch) operation |
| Maximum Load Current | 2 A per channel; 8 A per module (total) | Derate current at elevated temperatures; avoid exceeding per-channel limits |
| Output Isolation | Channel-to-channel: 500 V DC; Channel-to-backplane: 1500 V DC | Prevents ground loops and cross-channel interference |
| Load Protection | Built-in short-circuit protection; over-current detection | Faults are reported to the TMR controller for operator notification |
| Power Supply | Powered by TRICONEX controller backplane | No external power required; draws power from the TMR chassis |
| Compatibility | TRICONEX 3000, 4000, 5000 series TMR safety controllers | Verify controller firmware version for full compatibility |
| Environmental Ratings | – Operating Temperature: 0 °C to +60 °C
– Storage Temperature: -40 °C to +85 °C – Humidity: 5–95% RH (non-condensing) – Vibration: 5 g RMS (5–500 Hz, per IEC 60068-2-6) |
Suitable for harsh industrial environments; install in a climate-controlled cabinet |
| Mechanical Specifications | – Form Factor: TRICONEX standard chassis module
– Mounting: TRICONEX TMR controller chassis slot – Protection Rating: IP20 (cabinet-mounted only) – Weight: ~0.7 kg (typical) |
Hot-swappable; supports online maintenance without SIS shutdown |
| Safety Certifications | IEC 61508 SIL 3; TÜV Rheinland certified; FM Approved; CSA Certified | Compliant with global safety standards for SIS applications |
| Diagnostic Features | Short-circuit detection; over-current alarms; channel fault status reporting; self-diagnostics | Alarms are transmitted to the TMR controller for rapid troubleshooting |
Critical Notes (Avoid Common Mistakes)
- Safety System Exclusivity: The TRICONEX 2651 is designed exclusively for TRICONEX TMR safety controllers. Do not use it with non-TRICONEX PLC/DCS systems.
- Load Current Limits: Do not exceed the 2 A per-channel or 8 A per-module current ratings; overloading causes permanent module damage and safety system faults.
- Hot-Swap Operation: Follow TRICONEX safety procedures for hot-swapping—ensure the module is properly aligned with the chassis slot to avoid damaging backplane pins.
- Isolation Requirements: Do not bypass channel isolation; improper wiring may cause ground loops, signal interference, or module failure.
- Firmware Compatibility: Match the module firmware version with the TMR controller firmware; mismatched versions may lead to incorrect load switching or diagnostic errors.
Recommendations
- Installation: Insert the module into a designated discrete output slot in the TRICONEX TMR chassis; wire 24 V DC loads using shielded cables; ground the cable shield at the load end to minimize EMI interference.
- Commissioning: Use TRICONEX TriStation software to configure channel parameters (sourcing/sinking mode, fault alarm limits); test each channel’s switching function with a calibrated load before full system operation.
Do you need a wiring diagram template for the TRICONEX 2651 module to connect with 24 V DC solenoid