GE IS220PDOAH1A3364940CSP2 – Discrete Output Module for Mark VIe Control System

The GE IS220PDOAH1A3364940CSP2 is a high-reliability discrete output module used within GE’s Mark VIe and Mark VIeS turbine and industrial control platforms. Designed for mission-critical applications such as gas and steam turbine control, power generation systems, and heavy industrial automation, this module provides secure, isolated digital output channels for driving actuators, solenoids, relays, and other field devices. It supports deterministic real-time I/O processing and integrates seamlessly with Universal I/O (UIO) architecture in GE distributed control systems.

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Functional Characteristics

• Supports high-speed digital output switching with deterministic response time

• Electrical isolation between channels and system bus for surge and noise immunity

• Built-in fault detection and self-diagnostics, including blown-fuse and output state feedback

• Hot-swap capability available on supported backplanes without shutting down the unit

• Supports redundant architecture when paired with dual Mark VIe controllers

• Designed for long operational lifecycle in high-vibration and high-temperature environments

  
  

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Technical Parameters 

• Output Type: Discrete digital output (24 VDC typical field voltage)

• Output Channels: 16 channel isolated output architecture (model dependent)

• Output Drive Capacity: Supports inductive and resistive loads

• Communication Interface: I/O Network (IONet) Ethernet to Mark VIe controller

• Operating Temperature: -40°C to +70°C

• Power Supply: Via backplane; internal power isolation stage included

• Diagnostics: LED indicators for each channel + module health LED

• Mounting Style: DIN-rail or panel-mounted carrier base (Mark VIe standard)

• Compliance: GE safety certified, meets industrial control EMC requirements

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Hardware Structure & Components

1. Front Terminal Block – Field wiring access point for discrete outputs

2. Logic & Processing Core – Manages output command execution and diagnostics

3. Channel Isolation Drivers – Protect system from ground faults and electrical surges

4. Ethernet-based IONet Connector – Real-time data link to Mark VIe controllers

5. LED Monitoring Panel – Per-channel output state and alarm indicators

6. Backplane Power/Data Interface – Supplies module power and communications bus access

   
   

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Application Areas

• Gas, steam, and hydro turbine control panels

• Balance-of-plant industrial equipment (pumps, valves, ignition systems)

• Distributed I/O networks in power and utility systems

• Oil & gas safety shutdown logic and sequencing

• Large-scale mechanical actuation systems in heavy manufacturing

• Retrofit upgrades for aging Mark VI or earlier GE Speedtronic systems

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Installation & Maintenance Guidelines

Installation Steps

1. Mount the module onto the Mark VIe I/O carrier base.

2. Connect field wiring through the removable terminal block.

3. Attach Ethernet IONet cable to the designated port.

4. Verify grounding and shield continuity for noise immunity.

5. Power up and confirm all status LEDs show normal operation.

   
   

Maintenance Tips

• Replace terminal fuses only with GE-approved fuse ratings.

• Use GE ToolboxST or equivalent software to run diagnostics checks.

• Inspect connectors every 12–18 months for oxidation or thermal stress.

• Store unused spares in dry, ESD-protected packaging at <60% humidity.

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Additional Notes

• Often stocked as a critical spare in turbine control rooms due to its role in safety-rated sequencing.

• GE part numbering suffix (CSP2) may indicate firmware level, coating type, or configuration revision.

• Fully supported under GE Mark VIe lifecycle service programs, including long-term parts availability.