IS230TNAOH2C - Analog Output Module

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 the Mark VIe control system. Designed to facilitate the conversion of digital control commands and data into analog signals for external devices. With its ability to generate multiple analog output signals simultaneously, it serves as a vital interface between the control system and processes.

Features of the Analog Output Module

• Multiple Output Channels: The module offers multiple channels, allowing for the simultaneous generation of several analog output signals, catering to diverse industrial applications.
• Stable Output Signals: Each output channel is equipped with advanced circuitry to ensure the generation of precise and stable output signals, essential for controlling various analog devices such as valves, actuators, and motors.
• Mechanical Relays for Fault Isolation: A notable feature of the module is the inclusion of a normally open mechanical relay for each analog output circuit. These relays play a dual role in enabling or disabling output operation and providing isolation for failed outputs in Triple Modular Redundancy (TMR) systems.
• Enhanced System Integrity: In a TMR configuration, where redundancy and fault tolerance are critical, the mechanical relays ensure the integrity of the system by isolating faulty outputs. This prevents the impact of a fault on the operation of the remaining circuits, maintaining accuracy and reliability.

Role of Mechanical Relays in TMR Systems

• Isolation of Failed Outputs: If a fault occurs in one output circuit, the associated mechanical relay can be deactivated. This action effectively disconnects the faulty output from the customer load, preventing it from affecting the operation of other circuits.
• Maintaining System Reliability: By isolating failed outputs, the mechanical relays help maintain the reliability and performance of the overall system, ensuring uninterrupted operation even in the event of a fault.

Status Monitoring and Feedback

• Dual Functionality: The mechanical relays incorporate a second normally open contact, serving as a status indicator for monitoring their position.
• LED Status Indication: The status information provided by the relays is visually indicated by LEDs, allowing operators and maintenance personnel to quickly identify the position of each relay.

Integration

• Fault Detection and Isolation: By integrating mechanical relays, the Analog Output Module enhances fault detection and isolation capabilities in TMR systems, contributing to the overall robustness and performance of the Mark VIe control system.
• Enhanced Reliability: The module's ability to isolate failed outputs ensures the continued reliability of analog outputs, minimizing downtime and maximizing system uptime in industrial applications.

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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.