Description
Product Description
The ICS TRIPLEX 9802 is a critical component of a highly specialized safety system. This module is a redundant power supply or a power conditioning module designed for the ICS Triplex Trusted® system, a fault-tolerant, triple modular redundant (TMR) safety instrumented system (SIS). The primary function of the ICS TRIPLEX 9802 is to ensure an absolutely reliable and continuous source of clean power to the critical control logic within the Trusted chassis. In safety systems where any interruption can lead to a hazardous event, this module converts and regulates incoming plant power (typically 24VDC, 48VDC, or 120VAC) into the precise, isolated, and filtered voltages required by the TMR processor modules and I/O modules. The design of the 9802 often incorporates redundancy at the component level to prevent the power supply itself from being a single point of failure, thereby upholding the overall system’s safety integrity level (SIL 3) and high availability.
Technical Parameters and Characteristics
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Manufacturer and Platform: ICS Triplex (now part of Rockwell Automation), Trusted® TMR Safety System.
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Device Type: Redundant Power Supply / Power Conditioning Module.
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Key Function: Provides fault-tolerant, conditioned power to a Trusted TMR chassis.
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Input Power: Accepts a range of standard industrial power inputs. Common specifications include 24 VDC (with a wide operating range, e.g., 18-32 VDC) or 120 VAC. The exact input is defined by the specific model variant.
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Output Power: Generates multiple, isolated, and highly regulated DC voltage rails (e.g., +5V, ±12V, +24V) required by the digital logic, analog circuits, and communication circuits of the TMR modules in the chassis.
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Redundancy Architecture: The module itself is designed with internal redundancy, often featuring dual, isolated power converters that share the load. If one converter fails, the other can carry the full load seamlessly.
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Protections: Includes comprehensive protections against:
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Input reverse polarity.
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Input over-voltage and under-voltage.
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Output over-current and short-circuit (with auto-recovery).
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Over-temperature.
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Diagnostics and Status: Provides extensive status indication via LED lights and communicates health status to the main system controller. Alerts are generated for input power loss, converter failure, or out-of-tolerance conditions.
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Hot Swappable: Designed to be replaced without powering down the entire Trusted chassis or interrupting the safety function, which is a critical feature for maintaining system availability.
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Mounting: Installs into a dedicated slot in the Trusted system chassis, connecting directly to the backplane power distribution system.
Advantages and Key Features
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Ultimate Reliability for Safety Systems: The ICS TRIPLEX 9802 is engineered to meet the extreme reliability requirements of SIL 3 certified safety loops. Its internal redundancy and robust design make power supply failure an exceedingly remote event.
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Ensures System Integrity: By providing clean, stable, and isolated power, it prevents electrical noise or power transients from causing spurious trips or, more critically, a dangerous failure of the safety function within the TMR controllers.
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Maintains High Availability: The hot-swap capability and comprehensive diagnostics allow for preventive maintenance and rapid replacement, maximizing the uptime of the critical safety system.
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Simplified System Design: As a purpose-built component for the Trusted platform, it integrates perfectly, eliminating the need for external, custom-engineered power solutions and reducing engineering and validation overhead.
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Global Compliance: Designed and tested to meet rigorous international standards for safety systems and industrial electromagnetic compatibility (EMC).
Application Cases in Various Fields
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Offshore Oil & Gas Platforms: Powering the Emergency Shutdown (ESD) and Fire & Gas (F&G) systems that protect personnel and infrastructure.
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Liquefied Natural Gas (LNG) Plants: Providing fault-tolerant power to safety controllers managing critical processes during liquefaction, storage, and loading.
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Chemical and Petrochemical Processing: Used in Burner Management Systems (BMS) and process shutdown systems for high-hazard reactors and distillation columns.
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Power Generation (Turbine Control): Supplying power to the TMR controllers that manage turbine overspeed protection and critical sequence logic.
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Pipeline Compressor Stations: Ensuring continuous operation of safety systems that protect compressors and pipeline sections.
Comparisons with Competing Products (e.g., HIMA Power Modules, Siemens S7-400H PS, Triconex Power Supply)
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In favor of the ICS TRIPLEX 9802: It is the optimized and certified power solution specifically for the ICS Triplex Trusted TMR architecture. Its design philosophy is integrated with the TMR concept from the ground up, offering a level of internal redundancy and diagnostic integration that is tailored for that specific safety platform.
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Points to consider: Other safety system manufacturers (HIMA, Triconex) have their own equally robust, proprietary power supply modules. The choice is inherently tied to the choice of the main safety controller brand. A 9802 is not interchangeable with a power supply from another vendor. For a Trusted system, it is the only appropriate choice.
Selection Suggestions and Precautions
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Verify Exact System Compatibility: The ICS TRIPLEX 9802 must match the specific Trusted chassis model and generation. Confirm the exact input voltage requirement (24VDC vs. 120VAC) for your installation.
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Calculate Load Requirements: Ensure the total power consumption of all modules in the chassis does not exceed the rated output of the 9802 power supply, even under peak load conditions. Include all processor, communication, and I/O modules.
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Implement Proper Input Power Protection: The incoming power feed to the 9802 should be protected with appropriately sized circuit breakers or fuses as per the system manual. The power source should be as clean and stable as possible.
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Follow Strict Replacement Procedures: Even though it is hot-swappable, always follow the detailed step-by-step procedure outlined in the Trusted system documentation for removing and installing a 9802 module to avoid disrupting the system.
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Monitor Diagnostics Religiously: Pay close attention to the module’s status LEDs and any system alarms related to power health. A warning on a redundant power supply is a call for immediate planned maintenance.
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Procurement from Authorized Channels: Source the ICS TRIPLEX 9802 only from authorized Rockwell Automation/ICS Triplex distributors or directly from the manufacturer. Given its role in a safety system, using non-genuine, uncertified, or used power supplies can compromise the entire safety loop, invalidate certifications, and create severe liability risks. Always insist on documentation of origin and testing.
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