IS200DTAOH1A - Simplex Analog Output Board

SPECIFICATIONS

Part Number: IS200DTAOH1A
Manufacturer: General Electric
Series: Mark VI
Product Type: Simplex Analog Output Board
Number of channels: 8 current output channels
Analog output current: 0-20 mA
Customer load resistance: Up to 500 oohm
Size 8.6 cm wide x 16.2 cm high (3.4 in x 6.37 in)
Temperature 0 to 60oC (32 to 149 oF)
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IS200DTAOH1A is a Simplex Analog Output Board developed by General Electric. It is a part of Mark VI control system. The DTAO (Analog Output Terminal Board) offers precision analog output capabilities for diverse industrial applications. The board is meticulously engineered for DIN-rail mounting, ensuring convenient installation and integration within industrial enclosures or control panels. Its compact form factor optimizes space utilization while maintaining compatibility with standard mounting configurations.

Features

• Eight Analog Outputs Driven by VAOC I/O Board: With eight analog outputs, the board provides versatile signal generation capabilities, facilitating precise control of external devices such as actuators, valves, or process instruments. These outputs are driven by the VAOC (Voltage Analog Output Control) I/O board, ensuring seamless communication and synchronization.
• Simplex-Only Application Design: Specifically designed for simplex-only applications, limiting its compatibility to the VAOC I/O board exclusively. This design choice streamlines integration and operation, ensuring optimal performance and reliability in simplex control configurations.
• Single Cable Connection to VAOC Rack: A single cable with a 37-pin D-type connector serves as the interface between the board and the VAOC rack. This standardized cable connection simplifies installation and maintenance procedures, facilitating quick and efficient system deployment.
• Expandability with Multiple Boards: The VAOC rack supports the connection of up to two boards simultaneously, enabling the expansion of analog output channels to a total of 16. This scalability feature enhances system flexibility, allowing for tailored configurations to meet specific application requirements.
• Compatibility and Exclusivity: Designed exclusively for use with the VAOC I/O board, ensuring seamless compatibility and optimized performance. This exclusivity simplifies system design and integration processes, eliminating potential compatibility issues and ensuring reliable operation.
• Integrated Circuits and Noise Suppression: The DTAO board incorporates on-board circuits and noise suppression mechanisms identical to those found on the larger TBAO terminal board. This ensures consistent signal quality and reliability, even in noisy industrial environments, enhancing the accuracy and stability of analog output signals.
• On-Board ID Chip for Diagnostic Purposes: An on-board ID chip is integrated into the board, facilitating identification and communication with the VAOC for system diagnostic purposes. This chip enhances troubleshooting capabilities, enabling efficient detection and resolution of potential issues to maintain system integrity and performance.

Installation

• Mounting the Plastic Holder: Begin by sliding the board into the plastic holder provided. The holder is designed for easy attachment to a DIN-rail, a standard mounting solution in industrial environments. Secure the plastic holder onto the DIN-rail to provide a stable base for the board.
• Wiring Analog Outputs: Features eight analog outputs wired directly to the terminal block. Follow the provided diagram or instructions to ensure correct wiring. It's essential to use appropriate wiring techniques, such as shielded twisted pair cables (#18 AWG), to minimize signal interference and ensure reliable signal transmission.
• Device Compatibility and Location: Ensure that devices connected to the analog outputs comply with the specified resistance limit of 500 ohm. Additionally, consider the distance between the DTAO board and the driven devices, which should not exceed 300 meters (984 feet). This distance ensures optimal signal integrity and performance.
• Ground Connection: Locate the ground (SCOM) connection points on the board. Use the provided screws to establish a secure ground connection. It's essential to keep the ground connection as short as possible to minimize the risk of signal interference and ensure proper grounding.
• Terminal Block Configuration: The Euro-block type terminal block on the board features 36 terminals, providing ample connectivity options. Ensure that wires are securely connected to the terminal block and properly terminated to prevent loose connections or signal degradation.
• Final Checks: Before finalizing the installation, perform thorough checks to ensure all connections are secure and properly terminated. Verify the integrity of the wiring, ground connections, and mounting hardware to prevent potential issues during operation.
• Documentation and Maintenance: Document the installation process and keep detailed records for future reference. Regular maintenance and inspection of the board and associated components are essential to ensure continued reliability and performance.

Operation

• Analog Control Outputs: With support for eight analog control outputs, the board facilitates precise modulation of analog signals to control various industrial processes or devices. Each output channel provides the necessary interface for driving external actuators, valves, motors, or other equipment.
• Current Sensing and Feedback Mechanism: Incorporates a sophisticated current sensing and feedback mechanism. By measuring the voltage drop across the local loop current sense resistor on each output, the board accurately monitors the current flowing through the connected devices. This feedback information is relayed to the processor in the VAOC module, enabling precise current control and regulation.
• Noise Filtering and Surge Suppression: To ensure reliable and stable operation, features built-in filters designed to reduce high-frequency noise and suppress surge events on each output channel. These filters mitigate the impact of electrical disturbances or transient voltage spikes, minimizing the risk of signal distortion or equipment damage.
• VAOC Integration: Collaborates seamlessly with the VAOC module, which houses the digital-to-analog (D/A) converter and drivers responsible for generating the controlled currents. This integration streamlines communication and coordination between the analog output terminal board and the control processor, ensuring precise and synchronized operation.
• Digital-to-Analog Conversion: Within the VAOC module, the D/A converter translates digital control signals from the processor into analog voltage or current outputs. These converted signals are then amplified and buffered by the drivers before being transmitted to the DTAO board for precise current control and modulation.
• Driver Circuitry: The VAOC module's driver circuitry amplifies and conditions the analog output signals generated by the D/A converter. This ensures that the output currents delivered are accurately controlled and capable of driving the connected devices with the required precision and responsiveness.
• Seamless Operation and Control: By combining the capabilities of the board and the VAOC module, users can achieve seamless operation and precise control over industrial processes or equipment. The integrated solution offers robust performance, reliability, and flexibility, making it suitable for a wide range of industrial automation and control applications.

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FREQUENTLY ASKED QUESTIONS

What is IS200DTAOH1A?
It is a simplex analog output board developed by General Electrics.

How does the board indicate output current?
Employs a series resistor to measure the voltage drop across it, indicating the output current. If the voltage drop deviates from expected values, the I/O processor triggers a diagnostic alarm or fault, alerting users to potential issues with the output current.

What happens if one of the two outputs becomes unhealthy?
If any one of the two outputs on the board malfunctions or becomes unhealthy, the I/O processor generates a diagnostic alarm or fault. This proactive detection mechanism helps identify and address output-related issues promptly, minimizing disruptions to industrial processes.

How are cable connectors on the terminal board identified and verified?
Each cable connector on the terminal board features an ID device that contains essential information such as serial number, board type, revision number, and connector location (JR, JS, JT). The I/O controller interrogates this chip, and if a mismatch is detected, it triggers a hardware incompatibility fault.