ICS Triplex 9802

Description

Product Overview

The ICS Triplex 9802 is a foundational power supply and communications module for the renowned Trusted® TMR (Triple Modular Redundant) control system. Serving as the central nervous system of a Trusted rack, this critical component does more than just convert AC mains power; it establishes the high-integrity communication backbone between the triple redundant I/O modules (like the TC-215) and the main TMR processors. You can find technical manuals and configuration details for this system cornerstone via its resource page: ICS Triplex 9802. Essentially, the ICS Triplex 9802 is responsible for power conditioning, distribution, and facilitating the deterministic data exchange that enables the system’s famous fault-tolerant performance. No Trusted rack operates without this key module managing its core infrastructure.

Product Parameters and Specifications

• Function: Rack Power Supply and TMR Communications Module.
• Input Power: Typically accepts a range of AC voltages (e.g., 90-264VAC, 47-63Hz) to provide isolation and conditioning.
• Output Power: Supplies isolated, conditioned DC power to all other modules in the Trusted rack via the backplane. Often supports redundant power inputs.
• Communications Role: Hosts the proprietary Tristation Communication Network (TCN), which is the deterministic, fault-tolerant data highway connecting I/O modules to the main processors.
• Architecture: While not triplicated itself, it is designed with high reliability and redundancy in mind (e.g., dual power inputs). Its failure would affect the entire rack.
• Diagnostics: Features comprehensive self-diagnostics for power health and communication integrity, reporting status to the processors.
• Form Factor: A single-slot module designed for the left-most slot (Slot 0) in a Trusted rack chassis.

Advantages and Key Features

The primary advantage of the ICS Triplex 9802 is its integration of power and critical communications into a single, highly reliable unit, simplifying rack architecture and reducing potential failure points. It enables the system’s deterministic scan performance by managing the TCN, ensuring synchronized data acquisition and voting across all triple redundant I/O channels. The module provides full isolation between the noisy plant power supply and the sensitive electronics of the safety system, protecting against surges and transients. Its design supports hot-swappable replacement in configured systems, allowing for maintenance without a full system shutdown, thereby supporting high plant availability. The robust design of the ICS Triplex 9802 is a key contributor to the overall high MTBF (Mean Time Between Failures) of the Trusted system.

Application Cases in Industry

As the essential rack controller, the ICS Triplex 9802 is present in every Trusted system application. This includes Emergency Shutdown (ESD) systems on offshore oil platforms, where it ensures continuous, reliable operation of all safety I/O monitoring wellhead pressures and valve positions. In Turbomachinery Control for gas compressors and turbines, it guarantees the high-speed, deterministic communication needed for critical speed and vibration monitoring loops. Within Fire & Gas (F&G) systems in refineries, the module supports the continuous polling of gas detectors and flame scanners. Any process industry—from LNG terminals to chemical plants—that employs a Trusted TMR system for safety or critical control relies on the ICS Triplex 9802 as the silent workhorse powering and connecting its protective layers.

Comparison with Competing Products

Competing safety systems from vendors like HIMA, Emerson (DeltaV SIS), or Siemens (S7-400F/FH) approach rack architecture differently. Many competitors use distributed architectures where power supplies and communication networks are separate, often with standalone network switches or controllers. The integrated approach of the ICS Triplex 9802 consolidates these functions, which can simplify spare parts management and reduce inter-module wiring within the rack. Compared to a standard PLC rack power supply, the 9802 is in a different league due to its integral role in the fault-tolerant TCN. Its closest competitors would be the main controller/power modules in other dedicated TMR systems, where comparisons would focus on diagnostic coverage, power supply redundancy features, and the determinism of the communication protocol.

Selection Suggestions and Precautions

• Selection Advice:
  1. System Requirement: The ICS Triplex 9802 is not optional; it is mandatory for any Trusted rack configuration. Selection is based on the rack size (e.g., 4-slot, 12-slot) and the specific Trusted product generation.
  2. Power Input Voltage: Verify the module’s accepted input voltage range matches your plant’s available AC supply (e.g., 120VAC vs. 240VAC).
  3. Rack Configuration: Ensure you select the correct version compatible with your existing Trusted processor generation and I/O modules to guarantee proper TCN operation.
  4. Redundancy: For higher availability, systems are often configured with fully redundant racks, each with its own 9802 module.
• Important Precautions:
  1. Critical Component: Treat this as a critical spare part. A failure of the 9802 module will cause the entire rack to fail, potentially triggering a process shutdown if redundancy is not configured at the rack level.
  2. Handling: Always follow ESD (Electrostatic Discharge) precautions when handling the module.
  3. Configuration: While the module itself may not require software configuration, replacing it must be done in accordance with strict procedures to ensure the TCN re-initializes correctly. Refer to the system manuals.
  4. Power Sequencing: Understand the proper power-up and power-down sequence for the entire rack to avoid data corruption or communication faults.

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