Description
1. Product Description
2. Product Parameters
| Parameter | Details |
|---|---|
| Module Type | Digital Output Module (TMR-compatible) |
| Number of Channels | 16 channels (sink/output) |
| Output Type | 24 V DC, 0.5 A per channel (non-latching) |
| Isolation | Channel-to-channel: 500 V AC; Channel-to-system: 250 V AC |
| Response Time | <10 ms (on/off) |
| Diagnostic Coverage | >99% (per IEC 61508) |
| Operating Temperature | -40°C to +70°C |
| Certifications | IEC 61508 (SIL 3), IEC 61010-1, ATEX, CSA, RoHS |
| Dimensions | 140 mm (H) × 100 mm (W) × 180 mm (D) |
| Redundancy | TMR (triple modular redundancy) |
TRICONEX 9771-210
3. Advantages and Features
4. Application Areas and Cases
- Application Areas:
- Safety Instrumented Systems (SIS), Emergency Shutdown Systems (ESD)
- Process automation (valve control, motor starters)
- High-reliability machinery in mining and heavy industry
- Application Case: A liquefied natural gas (LNG) terminal deployed TRICONEX 9771-210 modules to control 32 critical shut-off valves in its cryogenic processing lines. The module’s fast response time (8 ms) and TMR architecture ensured rapid, fail-safe closure of valves during simulated fault scenarios, meeting the terminal’s strict safety protocols. Over three years of operation, the system achieved a 99.999% availability rate, minimizing downtime and improving operational safety.
5. Competitor Comparison
Unlike standard digital output modules, the TRICONEX 9771-210 integrates built-in TMR redundancy, eliminating the need for external redundant wiring and reducing installation costs by 40%. Its SIL 3 certification and >99% diagnostic coverage surpass many single-channel competitors, while the wide temperature range (-40°C to +70°C) ensures performance in harsh environments where other modules may degrade. The module’s hot-swap capability also enables maintenance without system shutdown, a feature not universally available in non-TMR solutions.
TRICONEX 9771-210
6. Selection Advice
- Load Requirements: Confirm the module’s output current (0.5 A per channel) matches your actuators’ power needs. For higher loads, consider external relay expansion.
- Redundancy Strategy: Evaluate whether TMR aligns with your system’s safety integrity level (SIL) requirements. TMR is ideal for SIL 3 applications but may be overspecified for lower-risk systems.
- Environmental Compatibility: Ensure the module’s operating temperature and vibration resistance match your installation environment (e.g., outdoor vs. indoor use).
- Scalability: Plan for future I/O expansion by leaving 15–20% spare slots in the control rack.
7. Precautions
- Wiring Practices: Use twisted-pair, shielded cables for output lines to mitigate EMI/RFI interference. Follow TRICONEX’s guidelines for terminal block torque (3–5 N·m) to prevent loose connections.
- Surge Protection: Install external surge suppressors for inductive loads (e.g., motors) to protect the module from voltage spikes during switching.
- Hot-Swap Safety: When replacing the module online, ensure all output power is disconnected to avoid arcing or damage to the backplane. Verify system isolation procedures before maintenance.
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