The GE IS220PDOAH1B Discrete Output Module is a rugged, high-performance I/O device used within GE’s Mark VIe control platform. It is designed to provide fast, reliable switching of discrete output signals to control field actuators, relays, solenoids, and other electromechanical devices.

Engineered for demanding turbine and industrial applications, the IS220PDOAH1B integrates comprehensive diagnostic and protection features to ensure safe and efficient operation. The module communicates with the control system via redundant Ethernet IONet and supports hot-swappable operation when used with compatible terminal boards.

With its compact footprint and advanced diagnostics, this module helps simplify field wiring, reduce maintenance downtime, and ensure optimal system performance in a wide range of critical applications.

Product Specifications

Product Applications

The GE IS220PDOAH1B module is a widely used discrete output module in both turbine control systems and general industrial automation environments:

• Gas Turbine Control

  Drives solenoids, actuator valves, and protective relays in turbine control systems.

• Steam Turbine and Generator Controls

  Controls auxiliary relays, trip solenoids, and field contactors.

• Combined Cycle Plants

  Interfaces with balance-of-plant equipment such as cooling fans, pumps, motors, and compressors.

• Power Plant Automation

  Outputs to MCCs (motor control centers), alarms, annunciators, and safety interlock relays.

• Refineries and Chemical Processing

  Drives process actuators and emergency shutdown devices (ESD).

• Retrofitting Legacy Systems

  Enables modern discrete control and monitoring when upgrading older Mark VI, Mark V, or Mark IV systems.

Product Advantages

• High Output Density

  Provides 16 outputs in a single module, reducing system footprint.

• Robust Design

  Industrial-grade components ensure long-term reliability in harsh environments.

• Diagnostic Intelligence

  Integrated monitoring detects open load, short circuit, and overload conditions per channel.

• Redundant Ethernet Interface

  Dual Ethernet IONet connectivity ensures secure and high-speed communication with controllers.

• Hot-Swappable Capability

  Enables field replacement without system shutdown when used with proper terminal boards.

• Flexible Integration

  Backward-compatible with GE Mark VIe architecture and prior control generations.

• Global Compliance

  Certified for use in international applications under CE, UL, CSA, and ISO9001 standards.

• Enhanced Safety

  Channel isolation provides high protection against ground loops and electrical faults.

Frequently Asked Questions (FAQ)

1. What is the primary function of the IS220PDOAH1B?

   It provides 16 discrete outputs to control field devices such as solenoids, relays, and actuators.

2. How many output channels are supported?

   16 discrete output channels.

3. What is the nominal output voltage range?

   18–32 VDC (nominal 24 VDC).

4. How much current can each output channel provide?

   Each channel supports up to 0.5 A continuous output.

5. Are the channels isolated?

   Yes—channel-to-channel and channel-to-ground isolation is provided.

6. What diagnostic features are built in?

   The module detects open load, short circuit, overloads, and provides LED status indicators.

7. Is the module hot-swappable?

   Yes, when used with compatible GE terminal boards.

8. What kind of applications use this module?

   Power generation, oil & gas, chemicals, industrial automation, turbines, and retrofits.

9. Is this module compatible with Mark VI and older systems?

   Yes, it supports integration with Mark VI and can be used for upgrades.

10. How is the module mounted?

    It can be mounted to a panel or DIN rail.