Description
Product Overview
- Model: TRICONEX 3501TN2
- Brand: Triconex (Schneider Electric, former Invensys)
- Series: TRICON TMR Fault-Tolerant Control Series
- Core Function: Collect and convert digital input signals
- Type: I/O Module (Digital Input Module)
- Basic Introduction: High-reliability digital input module for TRICON safety systems.
- Key Application: Transmit on-site switch signals to control system.
- System Compatibility: Seamlessly integrates with TRICON CX and Tricon platforms.

TRICONEX 3501TN2
Product Parameters & Specifications (Table)
| Parameter | Specification |
| Model | TRICONEX 3501TN2 |
| Module Type | Digital Input Module (DI Module) |
| Brand | Triconex (Schneider Electric, former Invensys) |
| Series | TRICON TMR Fault-Tolerant Control Series |
| Input Channels | 32 digital input channels, 4 groups (8 channels per group) |
| Nominal Input Voltage | 24 VDC (compatible with 115VAC/VDC optional) |
| Input Voltage Range | 20 VDC – 42.5 VDC (standard working range) |
| Input Type | Dry contact & wet contact signals |
| Response Time | ≤ 5 ms (typical) |
| Redundancy Architecture | Triple Modular Redundancy (TMR), 2oo3 voting |
| Isolation Level | 1500 VDC point isolation |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -55°C to +85°C |
| Protection Class | IP20 (panel-mounted, dust-proof) |
| Connector Type | 56-pin standard connector (matches Triconex terminal base) |
| Safety Rating | IEC 61508 SIL3, PL e (ISO 13849-1) |
| Certifications | CE, FM, ATEX, RoHS |

TRICONEX 3501TN2
Product Features
- TMR Fault Tolerance: Triple modular redundancy ensures stable operation with single-point fault.
- High Channel Density: 32 channels in 4 groups, easy for wiring and management.
- Dual Input Compatibility: Supports both dry and wet contact signals for diverse scenarios.
- Fast Response: ≤5ms response time for real-time signal collection.
- High Isolation: 1500VDC point isolation, strong anti-interference ability.
- Online Diagnostics: Real-time detection of wiring, short circuit and internal faults.
- Hot-Swappable: On-line replacement without system shutdown, reducing downtime.
- Harsh Environment Adaptation: Wide temperature range for industrial harsh conditions.
- Easy Integration: Seamlessly fits TRICON TMR safety control systems.
- Status Indication: Per-channel LED indicators for easy fault checking.
Product Uses
- Signal Collection: Collects on-site switch signals (valve, pressure switch, emergency button).
- Signal Conversion: Converts on-site signals into controller-processable logic signals.
- Fault Monitoring: Monitors wiring and signal faults in real time to ensure signal reliability.
- Safety Link: Provides stable input signals for ESD and F&G safety systems.
- Group Management: 4-group channel design facilitates classified signal management.
- System Redundancy: Supports TMR system redundancy to ensure high availability.
- Easy Maintenance: Hot-swappable design and LED indicators simplify maintenance.

TRICONEX 3501TN2
Application Fields
- Oil & Gas: Offshore platforms, wellhead control, pipeline ESD systems.
- Petrochemicals: Refineries, reactor control, chemical process safety interlocks.
- Power Generation: Turbine control, boiler protection, power plant safety systems.
- Mining & Metals: Conveyor safety, crusher control, smelting process monitoring.
- Chemical Industry: High-pressure equipment monitoring, leakage prevention systems.
- Fire & Gas Systems: Receiving signals from flame, smoke and gas detectors.
- Pharmaceuticals: Clean process control, batch production safety monitoring.
- Industrial Automation: Various critical process digital signal collection scenarios.
