General Electric IS220PDIAH1A Discrete Contact Input Terminal Board

The GE IS220PDIAH1A Discrete Contact Input Terminal Board is a key component of GE’s Mark VIe control platform, providing a reliable and efficient interface between field-mounted discrete devices and the turbine or process control system.

Designed for seamless integration with GE’s IS220 series I/O packs, the IS220PDIAH1A terminal board offers flexible, high-density connection points for a wide range of contact input signals. It is optimized for turbine control systems, power generation equipment, and other industrial automation environments where accurate and fast response to discrete inputs is critical for safe and efficient operation.

With robust construction, comprehensive diagnostic capabilities, and high immunity to electrical noise, the IS220PDIAH1A enhances the reliability and maintainability of modern control systems.

Product Specifications

Product Applications

The GE IS220PDIAH1A terminal board is widely used in turbine and industrial control systems to interface field contact signals to the control logic. Common applications include:

• Gas Turbine Control

  Receives status signals from limit switches, proximity sensors, trip devices, and permissive contacts.

• Steam Turbine Protection

  Inputs from valve position switches, emergency trip devices, and interlocks.

• Generator Control Systems

  Interfaces discrete status signals from circuit breakers, protection relays, auxiliary systems.

• Balance of Plant (BOP)

  Captures control and status signals for pumps, motors, dampers, and auxiliary systems.

• Industrial Automation

  Handles discrete inputs from safety systems, alarm panels, conveyor controls, and machinery.

• Retrofit Projects

  Provides an easy upgrade path for older GE Mark V and Mark VI discrete input modules.

Product Advantages

• High-Density Inputs

  24 discrete input channels allow compact system designs and save panel space.

• Wide Voltage Range

  Supports 18–32 VDC operation for flexibility in different plant environments.

• Diagnostic Features

  Onboard status LEDs and configurable fault diagnostics improve maintainability.

• Fast Response

  Accurate and fast detection of field signals ensures safe turbine and process operation.

• Electrical Isolation

  Provides channel-to-channel and channel-to-ground isolation, enhancing system robustness.

• Flexible Mounting Options

  Panel or DIN rail mounting supported for simplified installation.

• Global Certifications

  Meets CE, UL, CSA standards for international installations.

• Seamless Integration

  Works with Mark VIe and IS220 series control platforms.

Frequently Asked Questions (FAQ)

1. What is the function of the IS220PDIAH1A module?

   It serves as a terminal board for connecting 24 discrete input signals to the Mark VIe control system.

2. How many input channels are provided?

   24 discrete input channels.

3. What is the nominal input voltage?

   24 VDC nominal (range 18–32 VDC).

4. Does it support both wet and dry contact inputs?

   Yes, it supports both dry contact and voltage inputs.

5. What isolation does the board provide?

   Full channel-to-channel and channel-to-ground isolation.

6. Are there built-in diagnostics?

   Yes, the board has onboard diagnostics with status LEDs.

7. What are the typical applications?

   Gas/steam turbine control, generator protection, BOP, and industrial automation.

8. Is it compatible with older GE Mark VI or Mark V systems?

   Yes, it is designed for seamless retrofit and upgrade applications.

9. How is the module mounted?

   It can be mounted on a panel or DIN rail.

10. Does the board meet international certifications?

    Yes—CE, UL, CSA, and ISO9001 certified.