SPECIFICATIONS
Part No.: IS220PDIOH1AG
Manufacturer: General Electric
Series: Mark VIe
Number of input channels: 24 dry contact voltage input channels
Input isolation in pack: Optical isolation to 1500 V on all inputs
Input Filter: Hardware filter, 4 ms
Temperature Operating: -20 to 55oC
Availability: In Stock
Country of Manufacture: United States (USA)
Functional Description
IS220PDIOH1AG is a Discrete Input/Output Module developed by GE. It is a part of the Mark VIe control system. The PDIO I/O pack serves seamless integration and communication between I/O Ethernet networks and discrete input/output terminal boards. The I/O pack acts as an intermediary between one or two I/O Ethernet networks and a discrete input/output terminal board. It provides the necessary electrical interface to ensure smooth communication and data exchange between these components.
Features
- Processor Board and Acquisition Board: The module contains a processor board that handles data processing and communication. This board is a standard component across all Mark VIe distributed I/O packs, ensuring consistent functionality across various I/O modules. It also includes an acquisition board, which is specifically designed for managing discrete input/output tasks. This board is tailored to meet the application's requirements for efficient data handling and signal processing related to discrete input/output functions.
- Input/Output Capacity: The module supports up to 24 contact inputs, allowing for monitoring of multiple discrete signals from the system. It can also control up to 12 relay outputs, providing the ability to actuate relays for controlling external devices or processes. Additionally, the module receives feedback signals from the associated terminal board, ensuring accurate real-time monitoring of the status of inputs and outputs. This helps maintain system control and integrity.
- Connection Interfaces: The system input is facilitated via dual RJ45 Ethernet connectors, which connect the module to one or two I/O Ethernet networks. This redundancy provides a reliable data path for communication between the module and the control system. Power input is supplied through a three-pin connector, ensuring stable power delivery to the module. Discrete signal input/output is managed through a DC-62 connector, which directly interfaces with the associated terminal board. This connection ensures smooth integration between the module and the terminal board for handling discrete signals efficiently.
- Diagnostic Capabilities: The pack is equipped with visual diagnostics that provide real-time status updates. These diagnostics enable operators to monitor the health and performance of the module without the need for additional tools. The module also supports local diagnostic serial communications via an infrared port, allowing for advanced troubleshooting and diagnostic checks. This feature aids in maintenance and ensures that any potential issues can be quickly identified and resolved.
Installation
- Mounting the Terminal Board: Begin by securely mounting the desired terminal board in the designated location within the control cabinet or system enclosure. Ensure that the mounting surface is stable and provides adequate support for the terminal board.
- Connecting the PDIO Pack: Directly plug one I/O pack for simplex operation or three PDIO I/O packs for Triple Modular Redundant (TMR) configuration into the terminal board connectors. Ensure that the connection is secure to prevent any loose connections or interruptions in communication.
- Securing the Packs: Mechanically secure using the threaded studs located adjacent to the Ethernet ports. These studs slide into a mounting bracket specific to the terminal board type. Adjust the bracket location to ensure that there is no right-angle force applied to the DC-62 pin connector between the pack and the terminal board. This adjustment should only be required once during the product's lifespan to maintain optimal performance and prevent damage.
- Ethernet Connection: Plug in one or two Ethernet cables, depending on the system configuration. The PDIO pack will operate over either port, providing flexibility in network connectivity. If using dual connections, it is standard practice to connect ENET1 to the network associated with the R controller. However, note that the PDIO pack is not sensitive to Ethernet connections and will negotiate proper operation over either port.
- Applying Power: Apply power by plugging in the connector on the side of the pack. It is not necessary to insert this connector with the power removed from the cable, as the PDIO pack has inherent soft-start capability that controls current inrush on power application.
- Configuration: Configure as necessary to suit the requirements of the application. This may involve setting up input/output mappings, defining alarm thresholds, or adjusting communication parameters.
Power Management
- Soft Start Function: The power management function includes a soft start mechanism designed to control current inrush during the initial application of power. This prevents sudden spikes in current that could potentially damage components or destabilize the system.
- Fast Current Limit Function: After power is applied, the circuit activates a fast current limit function to swiftly respond to any abnormal current surges. This function acts as a protective measure to prevent a pack or terminal board failure from propagating back onto the 28 V power system. If the current limit function is triggered due to an abnormal condition, such as a short circuit or overload, the PDIO takes immediate action to limit the current flow and mitigate the risk of damage or system instability.
- Status Indicators: The PDIO is equipped with status indicators, including a green PWR (power) indicator, to provide visual feedback on the power status. When power is present and operating within normal parameters, the green PWR indicator illuminates, indicating that the PDIO is powered and functioning correctly. However, if the current limit function activates due to an abnormal condition, such as excessive current draw, the green PWR indicator will be extinguished until the issue is resolved. This serves as a visual alert to operators, indicating that there may be a problem with the power supply or the connected devices.
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Frequently Asked Questions
What is IS220PDIOH1AG?
It is a Discrete Input/Output Module designed and manufactured by GE.
What diagnostic tests are performed to detect non-responding contact inputs?
Conducts a diagnostic test by pulsing the threshold high and low to check the response of the opto-couplers. This test typically runs once every four seconds and can be observed as a brief period when all twenty-four contact input lights turn on. This allows for the detection of any non-responding contact inputs.
How are relay operations monitored for reliability?
Performs a frame rate comparison between the commanded state of each relay drive and the feedback received from the command output circuit. This comparison ensures that relay operations are consistent and reliable, verifying that the commanded state matches the actual state of the relays.
