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GE IS220PDIOH1B
GE IS220PDIOH1B
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GE IS220PPROH1A
GE IS220PPROH1A

GE IS220PDOAH1A

Product Overview

The IS220PDOAH1A is a high-performance Discrete Output Pack (PDOA) developed by GE for the Mark VIe Speedtronic turbine control platform, dedicated to reliable discrete signal actuation in gas, steam, and wind turbine applications. It integrates 12 isolated relay output channels with channel-to-channel/channel-to-ground isolation, delivering robust control for fuel valves, starter motors, protective relays, and other critical turbine components. The module operates on 27.4–125 VDC power, features dual 100 Mbps Ethernet ports for IONet communication, and supports simplex/dual/triple redundancy configurations to maximize system availability. It includes front-panel status LEDs for power, communication, and faults, enabling rapid diagnostics, and is hot-swappable for maintenance without system shutdown. The IS220PDOAH1A executes deterministic output processing at 10/20/40 ms frame rates, ensuring real-time actuation of turbine control elements, and seamless integration with Mark VIe controllers via IONet for centralized turbine control and SCADA connectivity. It is certified for hazardous locations (Class I Division II, ATEX Zone 2) and compatible with ToolboxST for remote configuration, firmware updates, and performance verification, making it a critical component for reliable turbine operation.
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Description

Technical Specifications

Parameter Details
Model Number IS220PDOAH1A
Manufacturer General Electric (GE Boards & Turbine Control)
Module Type Discrete Output Pack (PDOA)
Series Compatibility Mark VIe Speedtronic Turbine Control Systems
Functional Revision 1A
Form Factor Modular PCB Assembly (Rack-Mounted)
Power Supply 27.4–125 VDC (nominal 28 VDC)
Power Consumption 8 W (typical)
Isolation 2500 V RMS (channel-to-channel, channel-to-ground)
Operating Temperature -40°C to +70°C
Storage Temperature -40°C to +85°C
Relative Humidity 10–95% (non-condensing)
Dimensions (H×W×D) 8.3 cm × 4.2 cm × 12.1 cm (3.25 in × 1.65 in × 4.78 in)
Weight 0.45 kg (1.0 lb)
Communication Interfaces 2 × 100 Mbps Ethernet (IONet), Front-Panel Status Port
Certifications UL Class I Division II, ATEX Zone 2, IEC 61010
Manual Reference GEH-6721L (Mark VIe I/O Module User Guide)

I/O Interfaces

I/O Type Quantity Details
Relay Outputs 12 24/48/125 VDC, 2 A per channel (continuous), 5 A (peak), 2500 V isolation, 1 ms response time
Communication 2 × Ethernet (IONet), 1 × Status Port Dual 100 Mbps IONet for Mark VIe controller backplane integration; front-panel LEDs for power/comm/faults
Indicators 4 Front-Panel LEDs Power (PWR), Communication (COM), Fault (FLT), Attention (ATTN)
Terminal Board Compatibility TRLYH1B, TRLYH1C, TRLYH1D, TRLYH1E, TRLYH1F Supports solid-state relays (SSRs) and electromagnetic relays for diverse load control

Function Features

  • 12 Isolated Relay Outputs: Provides robust control for fuel valves, starter motors, protective relays, and other critical turbine components with channel-to-channel/channel-to-ground isolation.
  • 2500 V Isolation: Ensures noise immunity and safe operation in electrically noisy industrial environments, preventing signal interference and ground loops.
  • Dual Ethernet IONet: 2 × 100 Mbps Ethernet ports enable high-speed, deterministic communication with Mark VIe controllers for real-time data exchange and control.
  • Redundancy Support: Configurable for simplex, dual, or triple redundancy to ensure fault-tolerant operation in critical turbine applications.
  • Hazardous Location Compliance: Certified for UL Class I Division II and ATEX Zone 2, enabling use in explosive atmospheres (refineries and chemical plants).
  • Front-Panel Diagnostics: 4 LEDs provide real-time status updates for power, communication, and faults, reducing troubleshooting time.
  • Hot-Swappable Design: Edge connectors allow module replacement without system shutdown, minimizing maintenance downtime.
  • ToolboxST Compatibility: Supports remote configuration, firmware updates, and output performance monitoring via GE’s ToolboxST software.
  • Deterministic Processing: Operates at 10/20/40 ms software frame rates for precise discrete output actuation and real-time control.
  • Wide Voltage Range: Operates on 27.4–125 VDC power for compatibility with various industrial power systems.
  • Output Enable Feature: All outputs remain disabled until internal self-tests complete, ensuring safe module startup and preventing unintended actuation.
  • Terminal Board Flexibility: Compatible with TRLYH1 series terminal boards, supporting solid-state relays (SSRs) and electromagnetic relays for diverse load control applications.

Application Scenarios

  • Gas Turbine Fuel Control: Actuates fuel valves to regulate fuel flow, optimizing combustion efficiency and reducing emissions in power generation plants.
  • Steam Turbine Lube Oil Systems: Controls lube oil pumps and pressure regulators to maintain optimal lubrication and prevent turbine component wear.
  • Wind Turbine Starter Motors: Interfaces with starter motors to initiate turbine rotation, ensuring reliable startup and grid synchronization.
  • Hazardous Industrial Environments: Operates safely in Class I Division II and ATEX Zone 2 locations, such as refineries and chemical plants, where explosive atmospheres exist.
  • Power Plant Automation: Integrates with DCS and SCADA systems for centralized monitoring of turbine discrete outputs and remote actuation of control elements.
  • Turbine Retrofits: Direct replacement for legacy PDOA modules in Mark VIe upgrades, enhancing output reliability, noise immunity, and diagnostics.
  • Critical Safety Systems: Supports triple redundancy for emergency shutdown (ESD), fire suppression, and overspeed protection in nuclear and fossil fuel power plants.

Compatibility and Integration

  • Mark VIe Ecosystem: Fully compatible with Mark VIe controllers, terminal boards (TRLYH1 series), and I/O packs (IS220PAICH1A, IS220PDIOH1B) for seamless turbine system integration.
  • Software Support: Configurable via GE ToolboxST for discrete output mapping, channel configuration, and diagnostic analysis, enabling remote monitoring and control.
  • IONet Communication: Dual Ethernet ports enable high-speed IONet connectivity to Mark VIe controllers for real-time data transfer and control, supporting deterministic output actuation.
  • Redundancy Configurations: Supports simplex, dual, or triple redundancy to maximize system availability in critical applications, ensuring continuous turbine operation during module failures.
  • Documentation: Detailed guidelines available in the GE Mark VIe I/O Module User Guide (GEH-6721L) and Turbine Control System Integration Manual, providing comprehensive setup and troubleshooting instructions.
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