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IC697ALG320J

IC697ALG320J - Analog Module

IC697ALG320J - Analog Module IC697ALG320J - Analog Module

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SPECIFICATIONS

Part No.: IC697ALG320J
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Rated Voltage: 24 volts DC
Number of Inputs: 16
Input Current: 7.0 mA
Input Voltage Range: 0 to -30 volts DC
DC Power: Yes
Product Type: Analog Module
Availability: In Stock
Series: Mark I and II

Functional Description

IC697ALG320J is an analog module developed by GE. It is part of the Mark I and II control system. The module features four output channels, each of which can be independently configured to provide either voltage or current output signals.The high-level analog output system for the Programmable Logic Controller (PLC) receives digital data from the CPU or other controllers connected to the PLC backplane. This data is then converted by a Digital-to-Analog (D/A) converter into analog outputs, which can range up to 10 volts full scale or provide 0 to 22.5 milliamp current loop signals.

Features

  • Voltage Output Specifications: The module supports unipolar or bipolar analog voltage outputs. The output voltage range can be configured up to ±10 volts full scale, making it suitable for precise voltage-based control systems.
  • Current Loop Output Specifications: The module can also provide 0 to 22.5 milliamp current loop signals, widely used in process control systems where current loop signals are preferred for long-distance signal transmission due to their immunity to electrical noise.
  • User-Configurable Scaling: Each output channel on the module supports individual user scaling, allowing for fine-tuned adjustments to match specific process requirements or calibration needs.
  • Fast Update Rate: The module features a fast update rate, ensuring that analog values are processed and transmitted efficiently, minimizing delays in control systems where quick responses are critical.
  • No Jumpers or DIP Switches for Configuration: The module eliminates the need for manual configuration via jumpers or DIP switches, simplifying installation and setup for operators and engineers.
  • Factory Calibration: The module is calibrated at the factory to ensure accurate performance, and the calibration data is stored in non-volatile EEPROM memory, ensuring consistency and reliability across different operational environments.
  • Easy Configuration with Programming Software: Configuration of the module is simplified using programming software compatible with MS-DOS or Windows-based systems (Windows 95/NT). The software enables configuration over Ethernet TCP/IP or through the SNP port, making it adaptable to different network setups.
    The configuration function is installed directly on the programming device, which can be an IBM XT, AT, PS/2, or compatible Personal Computer, allowing for easy integration and setup without the need for specialized hardware.

Connections to User Devices

  • The connections to the Analog Output module are designed to be both flexible and secure, ensuring reliable communication between the module and external user devices. All connections are made to screw terminals located on a removable 40-terminal connector block, which is mounted on the front of the module for easy access. This modular design simplifies wiring, maintenance, and upgrades.
  • To ensure high-quality signal transmission, twisted, shielded instrumentation cables should be used for all field connections to the outputs. The use of shielded cables is crucial for minimizing electrical interference and maintaining signal integrity, especially in environments with significant electromagnetic noise. The cables connect to the I/O terminal board, which serves as the interface between the module and user devices. The terminal board provides separate connections for both current outputs and voltage outputs for each channel, allowing for customized configurations based on the application needs. The specific terminals used are determined by the selected configuration for each channel, ensuring that the system can adapt to different operational requirements.
  • Each channel on the terminal board is equipped with a ground connection, labeled GND, for connecting the shield of the wiring. This ground connection is directly linked to the rack, which plays a vital role in reducing noise. By grounding the shield to the rack, the system effectively rejects any external noise caused by shield drain currents, ensuring that the output signals remain clean and accurate.
  • While the ground connection is provided for each channel, the selection of ground location can be influenced by system power and ground considerations. Ideally, the ground should be located as physically close as possible to the rack containing the analog circuits to achieve the best possible performance. This proximity helps to further reduce noise and improve signal quality. It is standard practice to ground the shield at only one end to avoid ground loops, which can lead to unwanted interference. This grounding method ensures optimal signal integrity while minimizing the risk of electrical noise affecting the operation of the analog output module.
  • In addition to grounding and shielding, the module provides electrical isolation between the output field wiring and the backplane. This isolation is achieved through the use of optical isolation, which is an effective method for preventing externally generated noise from interfering with the module’s operation. By isolating the output circuits from external disturbances, the module ensures stable and reliable performance, even in environments with high levels of electrical noise. This feature is particularly beneficial in industrial settings, where noise from machinery or other electronic devices can significantly impact the accuracy and performance of control systems.

Recommended Field Wiring Procedures

  • Power Off and Safety Precautions: Before removing or installing any terminal boards, always turn off the power to the system. This is an essential safety step to prevent electrical shock and damage to the components. Once the power is off, open the hinged door on the module to gain access to the jackscrew that holds the terminal board securely in place. The jackscrew is designed to lock the terminal board in place, ensuring it stays properly positioned during operation. To disengage the terminal board, turn the jackscrew counter-clockwise until it is fully loosened and the board is free to be removed.
  • Removing the Terminal Board: Once the jackscrew is disengaged, carefully grasp the top of the terminal board and gently swing it outward from the module. The design of the terminal board allows for easy removal by pulling it outward without causing damage to the wiring or other components. Be cautious during this step to avoid straining or damaging the wiring.
  • Acceptable Wire Sizes: The terminal board is designed to accept a range of wire sizes, from AWG #22 (0.36 mm²) to AWG #14 (2.10 mm²). This flexibility allows for the use of different wire gauges depending on the specific requirements of the installation. It is important to ensure that the wire size chosen is compatible with the terminal board's design to achieve a secure connection. When using AWG #14 (2.10 mm²) wire, make sure that the maximum insulation diameter does not exceed 0.135 inches (3.43 mm). This is to ensure that the wires can be properly inserted into the terminals without obstruction, allowing for a clean and reliable connection. Additionally, if two wires need to be terminated on a single terminal, ensure that both wires are of the same size. This practice ensures that the terminal can securely hold both wires without compromising the quality of the connection.
  • Wire Capacity and Proper Marking: The terminal board is designed to handle up to 40 AWG #14 (2.10 mm²) wires. When using this wire size, it is essential to consider the physical space required for proper installation. To ensure sufficient space for the hinged door to close properly, wire markers should be placed at least 8 inches (203 mm) away from the termination end. This allows for a neat and organized wiring configuration, ensuring that the door can be closed without interference from the wiring or markers. By following these recommended field wiring procedures, you can ensure that the wiring is securely connected to the Analog Output module, minimizing the risk of connection failure and enhancing the system’s reliability. Proper installation also helps prevent mechanical strain on the wiring and terminals, which could lead to potential issues down the line.
  • Securing the Wire Bundle: After completing connections to all modules in the rack, it is crucial to secure the wire bundle to maintain an organized and safe installation. To do this, it is recommended to use a cable tie wrapped around the wire bundle and tightly secured through the cable tie cleat located at the lower right corner of the terminal board. For larger wire bundles, additional cable ties may be necessary to ensure that all wires are properly organized and secured.
  • Labeling and Identification: Each module comes with a door label insert that includes circuit wiring information and provides space for recording the user’s circuit wiring identification. The insert can be placed in the slot provided on the hinged door. If the label is difficult to insert, crease the scored edge before insertion. The label also features a color-coded stripe to allow for easy identification of the module's voltage type: blue for low voltage and red for high voltage.
  • Fastening the Terminal Board to the Rack: Once the field wiring is completed, it is essential to secure the terminal board to the rack. This can be done by inserting the terminal board strap, which is attached to each module, into the small rectangular slots located in the bottom card guide grill on the rack. This strap not only secures the terminal board but also helps identify the wired terminal board with its correct mating rack slot location, preventing mix-ups during the installation process.
  • Allowing for Proper Ventilation: For adequate ventilation of the module, ensure that there is at least a 5-inch (127 mm) clearance above and below the rack grill. This space ensures that the module can operate efficiently and avoid overheating. Additionally, be sure that wire bundles do not obstruct the rack grill, as this can interfere with airflow and potentially impact the module’s performance. By following these recommended field wiring procedures, you can ensure that the wiring is securely connected to the Analog Output module, minimizing the risk of connection failure and enhancing the system’s reliability. Proper installation also helps prevent mechanical strain on the wiring and terminals, which could lead to potential issues down the line.

Module LED

  • Flashing BOARD OK LED: When the module is powered up, it performs a series of diagnostic tests to ensure that it is functioning correctly. During this startup process, the BOARD OK LED flashes, indicating that the module has successfully passed these self-diagnostic checks.
  • Steady BOARD OK LED: Once the diagnostic tests are complete and the module has valid configuration data from the CPU, the BOARD OK LED will stay illuminated. This signifies that the module is operating properly and has successfully received and configured the necessary data from the CPU.
  • BOARD OK LED OFF: If the configuration data from the CPU is invalid or there is a configuration error, the BOARD OK LED will turn off. In this case, the system will log a fault in the CPU I/O Fault Table, which can be reviewed by the user to troubleshoot the issue.

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

Frequently Asked Questions

What is IC697ALG320J?
It is an analog module developed by GE under the Mark I and II series.

What is the purpose of the BOARD OK LED?
The BOARD OK LED indicates the status of the module. A flashing LED indicates that the module has powered up and passed its diagnostic tests, while a steady LED means the module has valid configuration data. If the LED is off, it indicates a configuration error.

How do I handle configuration errors?
If the BOARD OK LED is off, a configuration error has occurred, and a fault will be logged in the CPU I/O Fault Table. Users can troubleshoot this by reviewing the fault table and checking the configuration data.

What should I do if I need to replace the terminal board?
When replacing the terminal board, ensure that you follow proper wiring procedures, and once all connections are made, secure the wire bundle using cable ties. Ensure that the terminal board is fastened securely to the rack to maintain a proper connection.