IS230TNAOH2C - Analog Output Module

IS230TNAOH2C - Analog Output Module IS230TNAOH2C - Analog Output Module

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SPECIFICATIONS

Part Number: IS230TNAOH2C
Manufacturer: General Electric
Series: Mark VIe
Function: Analog Output Module
Availability: In Stock
Product type: PCB
Country of Manufacture: United States (USA)

Functional Description

IS230TNAOH2C is a Analog Output Module developed by GE. It is a part of Mark VIe control system. This module translate control commands and digital data from the control system into analog signals that can be utilized by various external devices and systems. The Analog Output Module offers multiple channels, allowing for the generation of multiple analog output signals simultaneously. Each channel is equipped with advanced circuitry to ensure accurate and stable output signals. These outputs can be used for various purposes such as controlling valves, actuators, motors, or other analog devices within the industrial process. One notable feature module is the incorporation of a normally open mechanical relay for each analog output circuit. This relay serves a dual purpose: enabling or disabling the operation of the output and providing a means to isolate a failed output in a Triple Modular Redundancy (TMR) system. In a TMR configuration, where redundancy and fault tolerance are paramount, the mechanical relay plays a crucial role in maintaining system integrity. If a fault or failure occurs in one of the output circuits, the relay associated with that circuit can be de-activated. This de-activation opens the relay, effectively disconnecting the faulty output from the customer load connected to the terminal board. This isolation ensures that the faulty output does not impact the operation of the remaining circuits, allowing them to continue providing accurate and reliable output signals.

Features

  • Each analog output circuit is equipped with a normally open mechanical relay that serves the purpose of enabling or disabling the operation of the output.
  • The inclusion of the mechanical relay in each output circuit is especially significant in Triple Modular Redundancy (TMR) systems. In a TMR configuration, three redundant PAICs (Parallel Analog Interface Cards) are utilized to create a fault-tolerant output. If one of the PAICs were to fail, it becomes necessary to isolate the failed output to prevent interference with the correct output generated by the remaining two PAICs.
  • To achieve this isolation, the mechanical relay associated with the failed output is de-activated. When the relay is de-activated, it opens, effectively interrupting the circuit and open-circuiting the analog output from the customer load connected to the terminal board. This isolation ensures that the faulty output does not impact the accuracy and reliability of the overall system operation.
  • Furthermore, the mechanical relay incorporates a second normally open contact that serves as a status indicator for the relay's position. This status information is essential for the control system to monitor and assess the condition of the relay. It provides feedback on whether the relay is activated (closed) or de-activated (open). To enhance visibility, the relay status is visually indicated by an LED, allowing operators and maintenance personnel to quickly and easily identify the position of the relay.
  • By integrating the mechanical relay and its associated features, the Analog Output Module ensures the integrity and reliability of the analog outputs in TMR systems. The relay's ability to isolate failed outputs and provide status information enhances the fault detection and isolation capabilities of the control system, contributing to the overall robustness and performance of the Mark VIe control system.

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FREQUENTLY ASKED QUESTIONS

What is IS230TNAOH2C?
It is a Analog Output Module developed by GE.

What is the purpose of the mechanical relay in each analog output circuit?
The mechanical relay included in each analog output circuit serves the purpose of enabling or disabling the operation of the output. It provides a means to control the flow of analog signals to external devices or systems.

Why is the inclusion of a mechanical relay significant in TMR systems?
In TMR systems, where redundancy and fault tolerance are crucial, the mechanical relay plays a vital role. If one of the Parallel Analog Interface Cards (PAICs) fails, it is necessary to isolate the failed output to prevent interference with the correct outputs generated by the remaining PAICs.

How does the mechanical relay isolate a failed output in a TMR system?
When a failure occurs in one of the PAICs, the associated mechanical relay is de-activated. This de-activation opens the relay, interrupting the circuit and effectively disconnecting the failed output from the customer load connected to the terminal board. This isolation ensures that the faulty output does not impact the accuracy and reliability of the overall system operation.