GE IS220PDOAH1B (IS230SNRLH2A) Discrete Output Pack

GE IS220PDOAH1A – Discrete Output Pack

Technical Specifications

Frequently Asked Questions (FAQ)

Q: Where was the IS220PDOAH1A Discrete Output Pack manufactured?
A: This device was manufactured at General Electric’s Salem, Virginia plant.

Q: Is the A-rated revision of the IS220PDOAH1A a common revision across GE’s Mark Series?
A: Yes, the A-rated functional product revision is the most common across the entire GE Mark Series.

Product Overview

The IS220PDOAH1A Discrete Output Pack is a critical component within the Mark VI Turbine Control System Series. Unlike a single printed circuit board, it is a pack of input/output modules essential for the daily automated control of turbine systems.

This pack represents a functional upgrade from the earlier Mark V Turbine Control System Series, extending its application beyond traditional gas and steam turbines to include wind turbines, reflecting the industry's shift toward more sustainable energy sources.

The IS220PDOAH1A is not the original Mark VI discrete output pack (which is the IS220PDOAH1), but rather a commonly used A-rated revision offering enhanced features and compatibility.

Hardware Overview

• Designed to interface with up to two I/O Ethernet networks and several discrete output terminal boards.

• Controls up to 12 relays and accepts feedback signals from connected terminal boards.

• Supports both solid-state relays (used with TRLYH1B, C, D, and F terminals) and electromagnetic relays (used with TRLYH1E boards).

• Inputs received through dual RJ45 Ethernet connectors and a 3-pin power input.

• Contains an embedded processor board featuring:

• Status-indicating LEDs

• Local power supplies with sequencing and monitoring

• High-speed processor with Flash and RAM memory

For detailed processor information, please refer to the GEH-721G Mark VIe Control System Guide, pages 223–230.