IS220VAICH1DAA - Analog Input Board

SPECIFICATIONS

Part No.: IS220VAICH1DAA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature :0 to 60 oC
Size: 10.26 in x 0.782 in x 7.375 in
Power consumption: Less than 31 MW
Number of channels: 24
Product Type: Analog Input Board
Availability: In Stock
Series: Mark VI

Functional Description

IS220VAICH1DAA is an Analog Input Board developed by GE. It is a part of Mark VI control system. The Analog Input Board (VAIC) manages analog signals within the system, offering versatile functionality for both input and output control.

Input Processing

• Capable of accepting 20 analog inputs, facilitating comprehensive monitoring capabilities.
• Controls four analog outputs, ensuring precise command execution.
• Each Analog Input terminal board accommodates ten inputs and two outputs, providing flexibility and scalability.
• Cables establish connections between the terminal board and the VME rack, where the VAIC processor board is housed.
• The VAIC processor board performs essential functions, converting analog inputs into digital values for further processing.

Data Transfer and Conversion

• Upon conversion, digital values are transmitted over the VME backplane to the VCMI board, facilitating seamless data transfer within the system.
• Subsequently, data is relayed to the controller, enabling real-time monitoring and control functionalities.

Operational Requirements

• To monitor all 20 inputs effectively, the VAIC necessitates the utilization of two terminal boards, ensuring comprehensive coverage.
• For output operations, the VAIC employs digital-to-analog conversion techniques, translating digital values into analog currents.
• These analog currents are then directed through the terminal board into the respective customer circuits, enabling precise output control and command execution.

TMR Configuration

• In a TMR setup, input signals from the terminal board are distributed to three separate VME board racks: R, S, and T, each equipped with a VAIC.
• Output signals are processed using a proprietary circuit that leverages inputs from all three VAICs, ensuring redundancy and fault tolerance.
• In case of a hardware failure, the faulty VAIC is isolated from the output circuit, while the remaining two boards continue to generate the required current, maintaining
• operational integrity.
  This redundant setup enhances system reliability, minimizing downtime and ensuring continuous operation even in the event of component failures.

Simplex Configuration

• In a simplex configuration, the terminal board directly supplies input signals to a single VAIC.
• The single VAIC assumes responsibility for processing all input signals and generating the required current for outputs.
• While lacking the redundancy of a TMR setup, the simplex configuration remains suitable for applications where redundancy is not a critical requirement, offering a cost-effective solution for straightforward control and monitoring tasks.

The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS220VAICH1DAA?
It is an Analog Input Board developed by GE under the Mark VI series.

What identification system does the terminal board utilize?
The terminal board incorporates its unique identification device, which is interrogated by the VAIC board. This identification mechanism is vital for ensuring compatibility and seamless integration within the system.

What information does the board ID device contain?
The board ID device contains essential details encoded into a read-only chip. These details include the terminal board's serial number, board type, revision number, and the specific connector locations (JR, JS, JT).

How does the system respond to a mismatch in board identification?
When the I/O processor reads the chip and detects a mismatch between the retrieved information and the expected specifications, it triggers a hardware incompatibility fault. This fault serves as an alert mechanism, indicating a potential issue that requires attention and resolution to maintain system integrity and functionality.