IS200VAICH1CAB - Analog Input Board

SPECIFICATIONS

Part No.: IS200VAICH1CAB
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature: 0 to 60 oC
Number of channels: 24
Input span: 4-20 mA
Power consumption: Less than 31 MW
Size: 26.04 cm high x 1.99 cm wide x 18.73 cm deep
Technology:Surface mount
Product Type: Analog Input Board
Availability: In Stock
Series: Mark VI

Functional Description

IS200VAICH1CAB is an analog input board developed by GE. It is a part of the Mark VI control system. The Analog Input Board (VAIC) serves as a pivotal component in the data acquisition and control system, offering the capability to handle a total of 20 analog inputs while simultaneously managing four analog outputs. The organization of this system involves the utilization of Analog Input terminal boards, each of which is designed to accommodate ten inputs and two outputs.

Features

• The connectivity within the system is established through cables that link the Analog Input terminal boards to the VME rack where the VAIC processor board is strategically positioned. This design allows for efficient signal transmission between the input terminals and the processing unit. The VME architecture facilitates the interchangeability and compatibility of these modules, ensuring seamless integration within the broader system.
• Upon receiving analog inputs, the VIC processor board takes on the responsibility of converting these analog signals into digital values. Subsequently, the processed digital data is transferred over the VME backplane to the VCMI board, acting as an intermediary between the VAIC and the controller. This multi-step data transmission process ensures that the analog inputs are accurately and efficiently conveyed to the main control unit.
• It is noteworthy that, in order to effectively monitor all 20 inputs, the VAIC requires the support of two Analog Input terminal boards. This dual-terminal board configuration demonstrates a scalable and modular approach, allowing the system to adapt to varying input requirements while maintaining a cohesive and organized structure.
• In terms of analog outputs, the VAIC undertakes the reverse process, converting digital values into analog currents. These analog currents are then directed through the terminal board and into the customer circuit, where they can be utilized for various control and monitoring applications. This bidirectional functionality of the VAIC highlights its versatility in handling both input and output signals within the analog domain.
• The Analog Input Board (VAIC) with its associated Analog Input terminal boards plays a crucial role in the overall functionality of the system. By seamlessly converting analog inputs to digital values and facilitating the transmission of data to the controller, the VAIC contributes to the efficiency and accuracy of the broader data acquisition and control system. Its modular design, coupled with the ability to handle both analog inputs and outputs, underscores its adaptability in diverse industrial and scientific applications.

Installation

• Power Down the VME Processor Rack: Begin the installation process by powering down the VME processor rack. This is a crucial step to ensure safety and prevent any potential electrical hazards during the installation. Disconnect the power source and allow the system to come to a complete halt before proceeding.
• Slide in the Board:Once the VME processor rack is powered down, locate the slot designated for the VAIC board. With the board properly aligned, gently slide it into the slot. Take care to align the edge connectors with the corresponding connectors in the rack.
• Secure the Board with Top and Bottom Levers:After sliding the board into the designated slot, use your hands to push the top and bottom levers in. This action ensures that the edge connectors are securely seated in their respective slots within the VME processor rack. Confirm that the board is evenly and firmly positioned to facilitate optimal electrical connections.
• Tighten Captive Screws on the Front Panel: To enhance the stability and security of the board, locate the captive screws on the top and bottom of the front panel. Use an appropriate tool to tighten these captive screws. This step is crucial for preventing any unintended movement or dislodging of the board, ensuring a reliable and stable connection.

Operation

Analog Input Processing:

The core functionality revolves around the processing of analog inputs. It is designed to accept a total of 20 analog inputs. Within its architecture, the board incorporates signal conditioning, an analog multiplexer (MUX), an Analog-to-Digital (A/D) converter, and a Digital-to-Analog (D/A) converter. These components collectively contribute to the accurate conversion of analog signals to digital values and vice versa.

Jumper Selection for Analog Input Types:

It accommodates flexibility in the type of analog input it can handle. Users can configure the board to accept different types of analog inputs, such as voltage, 4-20 mA, or 1 mA. This flexibility is achieved through jumper selection on the terminal board, allowing users to tailor the configuration based on the specific requirements of their application.

Analog Output Control:

In addition to analog input processing, the board is responsible for controlling four analog outputs. Two of these output circuits are dedicated to the 4-20 mA range, providing a standard output option. The remaining two circuits can be configured through terminal board jumpers to operate in either the 4-20 mA range or a broader 0-200 mA range. This configurability enhances the versatility of the board, enabling users to adapt to different output specifications as needed.

Noise Suppression Circuitry:

Both the analog inputs and outputs on the board are equipped with noise suppression circuitry. This feature serves as a protective mechanism, safeguarding the system against unwanted disturbances caused by surges and high-frequency noise. The inclusion of noise suppression circuitry ensures the integrity of the signals, contributing to the reliability and precision of the analog input and output processes.

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 IS200VAICH1CAB?
It is an analog input board developed by GE under the Mark VI series.

What aspects does the VAIC board monitor for reasonability?
The board monitors various aspects, including D/A outputs, output currents, total current, suicide relays, and 20/200 mA scaling relays. These parameters are checked for reasonability, and any deviations from expected values can trigger the creation of faults. This comprehensive monitoring ensures the reliability and proper functioning of the outputs.

What information is stored in the ID device of the TBAI terminal board?
The TBAI terminal board is equipped with its own ID device containing crucial information. This data, including the terminal board serial number, board type, revision number, and the JR, JS, JT connector location, is coded into a read-only chip. The VAIC board interrogates this ID device to ensure proper identification, enhancing system compatibility.

How does the VAIC board use the information from the TBAI terminal board's ID device?
The board reads the information from the TBAI terminal board's ID device using the I/O processor. This information includes the terminal board serial number, board type, revision number, and connector location details. The interrogation process ensures proper identification, and any mismatches can be detected, preventing potential hardware incompatibility issues.