Product Short Description
Triconex P0916DG is an official safety-grade interposing relay external termination panel manufactured by Triconex (Schneider Electric / Invensys), exclusively designed for the Trident Triple Modular Redundancy (TMR) Safety Instrumented System (SIS) platform.
This integrated termination assembly integrates 16 independent isolated relay dry-contact output channels, redundant power input circuits, per-channel independent fuses, output loop-back diagnosis circuits, electrical isolation, surge protection and signal conditioning circuits. It acts as a mandatory isolation interface between Trident digital output modules and field solenoid valves, safety interlock actuators, relays and contactors.
Description
Basic Product Specifications
- Manufacturer: Triconex (Schneider Electric Industrial Automation)
- Product Series: Trident TMR Safety Instrumented System
- Product Type: 16-Channel Digital Output Interposing Relay External Termination Panel
- Output Relay Channels: 16 Independent Isolated Normally Open Dry Contact Relay Channels
- System Architecture: Fully compatible with Trident TMR 2oo3 Triple Modular Redundancy Safety Architecture
- Compatible Modules: Trident 24VDC sink-type digital output modules
- Assembly Composition: Integrated PCB board, anti-loosening screw terminals, independent channel fuses, redundant power terminals, diagnosis circuits, mounting bracket
- Installation Mode: DIN rail mounting / cabinet fixed mounting
- Origin: USA
Electrical Technical Specifications
- Nominal Operating Field Voltage: 24 VDC
- Operating Voltage Range: 18 VDC ~ 30 VDC
- Power Input Architecture: Dual Redundant Independent Power Supply Input
- Single Relay Contact Resistive Load Rating: 2 A Continuous, 24 VDC
- Relay Contact Form: Normally Open Isolated Dry Contact
- Per-Channel Protection: Independent Fast-Acting Fuse + Blown Fuse Visual Indication
- Built-in Full-Channel Output Loop-Back Status Detection Circuit
- Field Side to Logic Side Electrical Isolation Voltage: 1500 VDC
- Channel-to-Channel Complete Independent Isolation
- Built-in Surge Protection Voltage: 1500 V
- Maximum Acceptable Wire Gauge: 24–12 AWG (0.3–2.5 mm²)
- Terminal Connection Type: Industrial anti-loosening screw compression terminals
- Total Panel Power Consumption: ≤4.5 W
Environmental Specifications
- Operating Ambient Temperature: -40 °C ~ +70 °C
- Storage Temperature: -40 °C ~ +85 °C
- Operating Relative Humidity: 5% ~ 95% Non-Condensing
- Anti-Vibration Performance: Compliant with IEC 60068-2-6 Industrial Standard
- Anti-Shock Performance: Compliant with IEC 60068-2-27 Industrial Standard
- Safety Certification: IEC 61508 SIL 3 Safety Certification, CE Certified, UL Certified
- Protection Grade: IP20 (Indoor Control Cabinet Installation)
Mechanical Specifications
- Overall Dimensions: Standard Trident series termination panel size
- Net Weight: 1.75 kg
- Board Material: High-strength flame-retardant industrial PCB + high-conductivity copper terminals
- Terminal Layout: Centralized dual-row channel terminal arrangement
- Mounting Mode: Standard DIN rail mounting / cabinet screw fixed mounting
Functional Characteristics
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16-Channel Independent Relay Isolation Output Design
Adopts full relay electrical isolation structure, completely isolates internal Trident TMR safety control circuits from field high-power inductive loads, eliminates inductive back EMF interference and damage to digital output modules.
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Dual Redundant Power Supply Input
Equipped with independent main power and redundant power input terminals; automatic seamless power failover ensures uninterrupted relay operation under single power supply fault conditions.
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Per-Channel Independent Fuse Protection
Each output channel configures exclusive fast-acting fuse with visible fault indication; single channel short-circuit fault completes isolated protection without influencing other channels and entire system operation.
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Integrated Real-Time Loop-Back Diagnosis Function
Built-in full-channel relay contact status detection, load connection detection and circuit integrity monitoring circuits; fault status transmits to Trident controller in real time for alarm and safety interlock actions.
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Perfect Trident TMR Safety Architecture Compatibility
Fully adapts to Trident TMR triple modular redundancy 2oo3 majority voting logic, completely retains original system diagnosis, fault supervision and fail-safe functions after external termination connection.
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High-Grade Multi-Level Circuit Protection
Integrates 1500VDC isolation, 1500V surge protection, overcurrent protection and reverse polarity protection, fully protects panel circuits, system modules and field devices from fault damage.
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High-Reliability Anti-Loosening Terminal Structure
Industrial heavy-duty screw terminals maintain stable wiring contact under long-term industrial vibration conditions, prevents poor contact and signal interruption faults.
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Centralized Wiring & Convenient Maintenance
Unified clear terminal numbering and centralized wiring layout realize intuitive on-site inspection, rapid fault troubleshooting and simple maintenance operations.
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Factory Pre-Assembled Plug-and-Play Design
Official factory fully tested pre-assembled finished panel, direct plug-and-play connection with Trident digital output modules, no on-site secondary welding or circuit modification required.
Application Scenarios
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Oil & Gas Industry
Wellhead ESD emergency shutdown solenoid valve relay control termination, pipeline safety interlock actuator interface panel, gas compressor safety shutdown output relay termination, oil-gas gathering station safety sequence control external relay termination.
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Petrochemical & Refining Industry
Reactor emergency shutdown relay output termination, furnace BMS burner management system actuator relay interface panel, distillation column safety interlock valve control termination, flare system safety output relay termination.
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Fire & Gas Detection System (FGS)
Fire alarm interlock relay output termination, hazardous gas leakage emergency shutdown relay control panel, fire fighting equipment safety actuation external relay termination.
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Power Generation Industry
Boiler safety interlock relay output termination, steam turbine auxiliary equipment shutdown relay control panel, generator protection system emergency output relay termination.
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Chemical Processing & Metallurgy Industry
Smelting furnace emergency shutdown relay termination, production line safety interlock actuator relay interface panel, pressure relief valve safety actuation external relay termination.
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General High-Hazard Process Industry
All SIL 3 safety-level 24VDC digital output isolated relay control occasions, including solenoid valve drive, relay actuation, emergency stop output and all critical safety interlock external interface termination applications.




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