Description
- Product Model: IS220PDIOH1A
- Manufacturer: GE (General Electric)
- System Platform: GE Mark VIe Distributed I/O Network
- Channels: 24 discrete input/output channels
- Operating Voltage: 24V DC nominal, up to 28.6V DC
- Maximum Input Voltage: 32V DC
- Input Isolation: Optical isolation per channel (~1500V)
- Input Response Time: ≤ 4ms for digital input transitions
- Output Response Time: ≤ 4ms for digital output transitions
- Redundancy: Dual Ethernet ports for fault tolerance and continuous operation
- Operating Temperature: –30°C to +65°C (industrial-grade tolerance)
- Hazardous Location Certification: UL Class I Div 2, Zone 2 (with certified terminal boards)
- Terminal Board Compatibility: Compatible with terminal boards like IS200STCIH1A, IS200TBCIH2C
- Mounting Style: Rack-mountable with I/O pack insertion capability
- Communication Protocols: Supported by IONet Ethernet for communication with control systems
Technical Architecture & Functional Positioning
The IS220PDIOH1A functions as a high-density discrete input/output (I/O) pack within the GE Mark VIe Speedtronic architecture, acting as an essential module for both input and output signal acquisition and control. Located in the field I/O layer, this module serves as the boundary between field devices (e.g., limit switches, relays, sensors) and the system’s control platform.
This module’s core functionality revolves around reliable acquisition of ON/OFF signals from external equipment and providing discrete command outputs based on control system decisions. Its design enables high-density signal processing, critical for systems that need to monitor or control multiple devices simultaneously without introducing significant latency or signal loss.
The IS220PDIOH1A integrates into GE’s IONet communication network using dual Ethernet ports, which provide redundancy for communication pathways. The use of optical isolation (typically ≥1500V) ensures that high-voltage transients or electrical noise in the field wiring does not affect the internal logic circuits, reducing the risk of false signals or system malfunction.
By supporting both digital input and digital output functions, this module is especially useful in applications where rapid switching or logic state changes are required. It can manage events such as machine starts, emergency stops, or feedback signals for actuator control, where both input and output states need to be monitored and controlled simultaneously.
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