GE IS220PDIOH1B

Product Overview

The IS220PDIOH1B is a high-density Parallel Distributed I/O (PDIO) module engineered by GE for the Mark VIe Speedtronic turbine control platform, serving as a core interface for discrete signal acquisition and actuation in gas, steam, and wind turbine applications. It builds on the IS220PDIOH1A design with enhanced noise immunity and diagnostics, integrating 32 isolated digital inputs and 32 isolated digital outputs with channel-to-channel/channel-to-ground isolation for signal integrity. 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 IS220PDIOH1B executes deterministic I/O processing at 10/20/40 ms frame rates, ensuring real-time monitoring of safety interlocks, valve positions, and relay states, 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.

Category: GE

Description

Technical Specifications

Parameter	Details
Model Number	IS220PDIOH1B
Manufacturer	General Electric (GE Energy, Boards & Turbine Control)
Module Type	Parallel Distributed I/O (PDIO) Module
Series Compatibility	Mark VIe Speedtronic Turbine Control Systems
Functional Revision	B
Form Factor	Modular PCB Assembly (Rack-Mounted)
Power Supply	27.4–125 VDC (28 VDC nominal)
Power Consumption	12 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)	8.9 cm × 15.0 cm × 5.7 cm (3.5 in × 5.9 in × 2.25 in)
Weight	0.91 kg (2.0 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
Digital Inputs	32	24/48/125 VDC, sinking/sourcing, 2500 V isolation, 1 ms response time
Digital Outputs	32	24/48/125 VDC, relay/solid-state, 2500 V isolation, 2 A per channel
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)

Function Features

High-Density Discrete I/O: 32 digital inputs and 32 digital outputs support simultaneous monitoring of safety interlocks, valve positions, and relay states, and actuation of control elements.
2500 V Isolation: Channel-to-channel and channel-to-ground isolation ensures noise immunity and safe operation in electrically noisy industrial environments.
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, 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 I/O performance monitoring via GE’s ToolboxST software.
Deterministic Processing: Operates at 10/20/40 ms software frame rates for precise discrete signal handling and real-time control.
Wide Voltage Range: 27.4–125 VDC power input for compatibility with various industrial power systems.
Conformal Coating: Protects against moisture, dust, and chemical exposure in harsh industrial settings.
Terminal Board Compatibility: Works with TDBS/TDBT terminal boards for secure wiring and signal termination.

Application Scenarios

Gas Turbine Control: Monitors safety interlocks (overspeed, flame detection), valve positions, and starter status; controls fuel valves, ignition systems, and exhaust dampers for efficient turbine operation.
Steam Turbine Systems: Regulates steam admission valves, lube oil pumps, and generator breakers for grid stability and load management.
Wind Turbine Safety: Interfaces with emergency stop circuits, pitch brake controls, and rotor lock sensors to ensure safe wind turbine operation.
Hazardous Industrial Environments: Operates safely in Class I Division II and ATEX Zone 2 locations, such as refineries and chemical plants.
Power Plant Automation: Integrates with DCS and SCADA systems for centralized monitoring of turbine discrete signals and remote actuation of control elements.
Turbine Retrofits: Direct replacement for legacy PDIO modules in Mark VIe upgrades, enhancing I/O density, noise immunity, and diagnostics.
Critical Safety Systems: Supports triple redundancy for overspeed protection, emergency shutdown, and fire suppression in nuclear and fossil fuel power plants.

Compatibility and Integration

Mark VIe Ecosystem: Fully compatible with Mark VIe controllers, terminal boards (TDBS, TDBT), and I/O packs (IS220PAICH1A, IS220PDOAH1B) for seamless turbine system integration.
Software Support: Configurable via GE ToolboxST for discrete I/O mapping, channel configuration, and diagnostic analysis.
IONet Communication: Dual Ethernet ports enable high-speed IONet connectivity to Mark VIe controllers for real-time data transfer and control.
Redundancy Configurations: Supports simplex, dual, or triple redundancy to maximize system availability in critical applications.
Documentation: Detailed guidelines available in the GE Mark VIe I/O Module User Guide (GEH-6721L) and Turbine Control System Integration Manual.

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