Description

The TRICONEX 3301 is a critical Power Supply Module engineered for Schneider Electric’s Triconex® Triple Modular Redundant (TMR) safety systems, providing conditioned and fault-tolerant power to Tricon v9, v10, and v11 chassis. Designed for mission-critical applications requiring SIL 3 (Safety Integrity Level 3) certification per IEC 61508/61511 standards, this module converts raw input power (120/230V AC or 125V DC) into isolated +5V DC logic voltage and ±15V DC analog voltage rails with >90% efficiency. The 3301 incorporates triple-redundant power conversion circuits with automatic load sharing and cross-channel monitoring, ensuring uninterrupted operation even during single or dual internal failures. Its active power factor correction (PFC) minimizes harmonic distortion while supporting wide input voltage fluctuations (±20%).

As the backbone of Triconex safety platforms, the TRICONEX 3301 features real-time diagnostics for overvoltage, undervoltage, overtemperature, and current imbalance conditions. These faults trigger alarms in the main processor while maintaining power integrity through redundant paths. Hot-swappable design allows replacement without system shutdown, and convection cooling eliminates fan failures—crucial for oil/gas emergency shutdown systems (ESD), fire & gas (F&G) systems, and turbine control where power stability directly impacts personnel and asset safety.

TRICONEX 3301

Technical Specifications

Main Features and Advantages

Fault-Tolerant Power Architecture: Three independent power converters operate in parallel, continuously monitored by a voting logic controller. If one converter fails, the remaining two instantly compensate without voltage dip—achieving hardware fault tolerance (HFT=2) for SIL 3 compliance. This design ensures zero single-point failures in critical safety systems.

Advanced Diagnostics and Protection: Real-time monitoring detects output drift >±2%, current imbalance >10%, or overtemperature >85°C. Faults trigger LED indicators and system alarms while maintaining power delivery. Integrated inrush current limitation (<40A>

Maintenance Optimization: Hot-swap capability enables module replacement in under 2 minutes without system shutdown. Tool-less latching secures the 3301 in Tricon chassis slots, while front-accessible fuses simplify servicing. Fanless operation eliminates moving parts, reducing maintenance in dusty refinery or offshore environments.

Application Field

The TRICONEX 3301 powers safety-critical infrastructure:

Oil & Gas: Backbone for ESD systems on offshore platforms, ensuring shutdown valve control during blowouts.

Power Generation: Supports turbine overspeed protection systems in nuclear/coal plants.

Chemical Processing: Provides fault-tolerant power to reactor temperature safety interlocks.

Pharmaceutical: Energizes SIL 3-compliant fire suppression controls in API manufacturing.

Mining: Powers gas detection systems in underground conveyors and processing plants.

TRICONEX 3301

Related Products

TRICONEX 3700A: Main Processor requiring 3301 power.

TRICONEX 3302: Enhanced power supply (300W) for high-density chassis.

TRICONEX 4351B: Analog input module powered by 3301.

TRICONEX 8312: Chassis backplane distributing 3301 power.

TRICONEX 3625: Digital output module dependent on 3301 voltage rails.

TRICONEX 3301X: Legacy variant for Tricon v8 systems.