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 pack comprises a processor board, which is common to all Mark VIe distributed I/O packs, handling data processing and communication tasks. Additionally, it includes an acquisition board specific to discrete input/output functions, tailored to meet the requirements of the application.
- Input/Output Capacity: The pack is capable of accepting up to 24 contact inputs and controlling up to 12 relay outputs. It also receives feedback signals specific to the terminal board associated with the PDIO pack, ensuring accurate monitoring and control of the system.
- Connection Interfaces: System input to the pack is facilitated through dual RJ45 Ethernet connectors, enabling connectivity to the I/O Ethernet networks. Additionally, power input is provided through a three-pin connector, ensuring reliable power supply to the PDIO pack. Discrete signal input/output is achieved through a DC-62 connector, which directly connects with the associated terminal board connector, facilitating seamless integration and communication.
- Diagnostic Capabilities: Visual diagnostics are integrated into the PDIO pack, offering real-time status updates and performance insights. Local diagnostic serial communications are also possible through an infrared port, providing additional troubleshooting and diagnostic functionalities.
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.
World of Controls has the most comprehensive collection of GE Mark VIe components. Please contact WOC as soon as possible if you require any extra information.
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.
