The Triconex 4351B is a high-reliability power supply module designed specifically for Triconex safety control systems, providing stable and redundant power to support critical industrial operations. Below are its detailed specifications and features:
- Manufacturer: Triconex (a brand under Schneider Electric).
- Product Type: Redundant power supply module.
- Primary Function: Delivers regulated DC power to Triconex safety system chassis (e.g., Tricon, Trident) and connected I/O modules, ensuring uninterrupted operation of safety-critical equipment.
- Compatibility: Fully compatible with Triconex Tricon V9/V10/V11 and Trident safety controllers.
- Input Voltage: Supports dual AC input redundancy, with a range of 85–264 VAC (50/60 Hz) for wide adaptability to different industrial power grids.
- Output Voltage: Provides a regulated 5 VDC output (main power for system backplane) and optional 24 VDC auxiliary output (for external sensors/accessories).
- Output Current:
- 5 VDC output: Maximum 20 A (sufficient to power full-chassis I/O modules).
- 24 VDC output: Maximum 2 A (auxiliary power for low-current devices).
- Efficiency: Up to 85% at full load, reducing energy loss and heat generation.
- Isolation: Input-to-output isolation of 2.5 kV AC (1 minute), preventing electrical interference from affecting the safety system.
- Protection Features:
- Over-voltage protection (OVP): Triggers shutdown if output voltage exceeds 5.6 VDC (5V rail) or 28 VDC (24V rail).
- Over-current protection (OCP): Limits current to prevent module damage during short circuits.
- Over-temperature protection (OTP): Shuts down automatically if internal temperature exceeds 85°C.
- Dual Redundant Design: Supports 1+1 or 2+2 power supply redundancy. If one module fails, the redundant unit takes over instantly (switchover time < 10 ms), ensuring zero power interruption.
- Hot-Swappable: Allows online replacement without shutting down the safety system, minimizing maintenance downtime and avoiding impact on production.
- Real-Time Diagnostics: Equipped with LED status indicators (Power OK, Fault, Redundancy Active) and communicates diagnostic data to the Triconex controller. Users can monitor voltage, current, and fault status via TriStation configuration software.
- Safety Certifications:
- Complies with IEC 61508 (SIL 3) for safety integrity, meeting the requirements of safety-critical applications.
- Certified for hazardous areas: ATEX (II 2G Ex d IIC T4 Ga) and IECEx (Ex d IIC T4 Ga).
- Meets global industrial standards: UL 508, CSA C22.2 No. 14, and CE marking.
- Operating Temperature: -40°C to +70°C (wide range for harsh industrial sites like refineries or offshore platforms).
- Storage Temperature: -40°C to +85°C (suitable for long-term storage in warehouse conditions).
- Humidity: 5%–95% (non-condensing), resisting moisture in humid environments.
- Vibration/Shock:
- Vibration resistance: IEC 60068-2-6 (10–500 Hz, 0.5 g rms).
- Shock resistance: IEC 60068-2-27 (50 g, 11 ms half-sine pulse), withstanding mechanical impacts during installation or operation.
The Triconex 4351B is widely used in safety-critical industries where stable power is essential:
- Oil & Gas: Powers emergency shutdown systems (ESD) and fire/gas detection systems (FGS) in refineries, offshore platforms, and pipelines.
- Petrochemicals: Supplies power to process safety controllers in chemical plants and polymer production facilities.
- Power Generation: Supports safety systems for thermal power plants, nuclear power auxiliary systems, and renewable energy (wind/solar) grid-connected equipment.
- Pharmaceuticals: Ensures uninterrupted power for GMP-compliant safety control systems in drug manufacturing.
