GE IS220PDOAH1BC + IS230SNRLH2A + IS200SRLYH2AAA

Mark VIe Discrete Output Module Set – Relay Output Control Solution

The GE IS220PDOAH1BC + IS230SNRLH2A + IS200SRLYH2AAA is a complete Mark VIe discrete output control assembly designed for turbine and industrial automation systems. This hardware combination provides reliable relay output control for field devices such as solenoids, valves, alarms, and contactors in demanding environments including power generation, oil & gas, and heavy industry.

This set typically works together as an integrated output solution:

• IS220PDOAH1BC → Discrete Output I/O Pack
• IS230SNRLH2A → DIN-rail relay output module assembly
• IS200SRLYH2AAA → Simplex Relay Output Terminal Board

Together they form a robust discrete output interface for GE Mark VIe turbine control systems.

System Overview

The Mark VIe control system uses distributed I/O architecture. In this setup:

• The PDOA I/O pack processes control signals and communication.
• The SRLY terminal board provides relay outputs.
• The SNRL DIN-rail assembly enables installation and field wiring.

This architecture ensures high reliability, modular maintenance, and hazardous-area compatibility.

IS220PDOAH1BC – Discrete Output I/O Pack

Description

The IS220PDOAH1BC is a high-performance discrete output pack designed to interface with Mark VIe control systems and provide fast, reliable control of external devices.

Key Features

• Dual Ethernet ports for network communication
• Flash & RAM memory architecture
• 28V DC power input
• 12 discrete output channels
• LED diagnostics (Power, Attention, Tx/Rx, Link)
• Compact, surface-mount design

Function

This module receives commands from the controller and converts them into output signals that drive relay terminal boards.

IS200SRLYH2AAA – Simplex Relay Output Terminal Board

Description

The IS200SRLYH2AAA is a Simplex Relay Output Terminal Board designed for Mark VIe turbine control systems. It provides relay outputs to control external equipment.

Key Specifications

• 12 Form-C relay output circuits
• Nominal voltages: 24 / 48 / 125 VDC
• Max current ratings:
  • 5 A @ 24 VDC
  • 1.2 A @ 48 VDC
  • 0.6 A @ 125 VDC
• Operating temperature: −30°C to +65°C
• Hazardous location certified
• Designed for industrial turbine control environments

Typical Controlled Devices

• Solenoids
• Valves
• Contactors
• Alarm systems
• Motor starters

IS230SNRLH2A – DIN Rail Relay Output Assembly

Description

The IS230SNRLH2A is the DIN-rail mounting assembly used with the SRLY relay terminal board and PDOA output pack.

Key Features

• Designed for Mark VIe discrete output modules
• Approved hardware combination for hazardous locations
• DIN-rail installation for easy cabinet integration
• Supports multiple SRLY terminal board configurations

Key Benefits of This Module Combination

High Reliability for Turbine Control

Designed specifically for gas and steam turbine automation, ensuring safe and consistent operation.

Modular Design

Each component can be replaced independently, reducing downtime and maintenance costs.

Hazardous Area Certification

Suitable for Class I Div 2 / Zone 2 industrial environments.

Industrial Durability

Wide temperature range and conformal coating for harsh environments.

Typical Applications

• Gas turbine control systems
• Steam turbine control systems
• Power plants
• Oil & gas facilities
• Marine propulsion systems
• Heavy industrial automation

Summary

The GE IS220PDOAH1BC + IS230SNRLH2A + IS200SRLYH2AAA forms a complete Mark VIe discrete relay output solution that delivers reliable control of field devices in mission-critical industrial applications. With modular architecture, hazardous-area certification, and proven turbine-control performance, this combination is widely used in modern distributed control systems.