Description
1. Product Title
GE IS220PDIOH1A – Mark VIe Discrete I/O Pack
2. Product Overview
The GE IS220PDIOH1A is a high-density Discrete Input/Output (DIO) pack designed for the Mark VIe Distributed Control System (DCS). This module serves as the primary interface for processing discrete signals, handling both inputs (field contacts) and outputs (solenoids, relays, or indicators). The IS220PDIOH1A bridges the physical field devices and the IONet, GE’s high-speed Ethernet-based control network.
Designed for high reliability in power generation and industrial automation, this I/O pack features an integrated local processor that manages signal conditioning, time-stamping, and extensive diagnostics. By decentralizing processing power to the “pack” level, it reduces the load on the main controller and ensures that critical signal data is captured with sub-millisecond precision.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS220PDIOH1A
- Warranty: One Year
- Condition: 100% New & Original
- I/O Capacity: Supports up to 24 Discrete Inputs and 12 Discrete Outputs (configuration dependent)
- Communication: Dual 10/100 Mbps Ethernet ports for IONet redundancy
- Time Synchronization: IEEE 1588 support for global time-stamping
- Input Voltage: Supports 24V DC, 48V DC, and 125V DC (determined by the associated terminal board)
- Output Type: Relay driver or solid-state (depending on terminal board pairing)
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
- Diagnostics: Monitoring of contact excitation voltage and relay feedback
- Microprocessor: Internal 32-bit RISC processor
4. Key Features & Benefits
- Bi-Directional Functionality: Combining both inputs and outputs in a single IS220PDIOH1A pack optimizes cabinet space and reduces the total number of modules required for auxiliary control.
- Sequence of Events (SOE) Capture: Provides 1ms resolution time-stamping for all inputs, enabling detailed post-trip analysis and precise event sequencing.
- Network Fault Tolerance: The dual Ethernet interface allows for redundant connections to IONet switches, ensuring that a single cable failure does not disrupt turbine control.
- Comprehensive Monitoring: Includes diagnostic features that detect “stuck” relays, blown fuses, and missing excitation voltage, allowing for rapid fault isolation and maintenance.
5. Application Scenarios
- Turbine Auxiliary Control: Ideal for managing lube oil pumps, cooling fans, and motor starters where both status feedback (DI) and command signals (DO) are required.
- Safety Logic Integration: Deployed in fire and gas detection loops or emergency vent systems where high-availability discrete I/O is critical for plant safety.
- Material Handling: Used in heavy industrial facilities to coordinate conveyor systems and automated valve manifolds integrated into the Mark VIe network.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the IS220PDIOH1A ?
- A: It is a functional I/O pack that collects discrete field signals and executes output commands, communicating this data via the IONet to the Mark VIe controller.
- Q: Which terminal boards are compatible with the IS220PDIOH1A ?
- A: This pack typically mounts on the TDIO terminal board (such as TBDIOH1A or TBDIOH2A) which provides the physical termination for field wiring.
