Description

The IS220PIOAH1A is an ARCNET interface module and communications bridge I/O pack manufactured by General Electric as part of the Mark VI Speedtronic control system and utilized within Mark VIe Excitation Control systems. This module is designed without an associated standard terminal board, interfacing instead directly with a JPDV interface PCB to perform advanced hardware processes such as algorithmic computations and sensor signal digitization. Operating on a QNX operating system powered by an internal 32-bit RISC 266 MHz CPU processor board, the IS220PIOAH1A establishes reliable data bridges between the local interfaces and the main controller board housed within the central processor. Its networking architecture includes dual 100 MB Ethernet ports for robust industrial communication, a local power port, and an integrated ambient thermal sensor configured to trigger a system alarm if internal operating thresholds are crossed.

Features

• Operates as a high-speed communications bridge module between ARCNET networks and core controller boards
• Features an internal standalone processor board running a real-time QNX OS with a 32-bit RISC 266 MHz CPU
• Interfaced directly with a JPDV board rather than standard multi-screw terminal blocks
• Supports rapid execution of control algorithms and local digitization of raw sensor signals
• Engineered with dual 100 MB Ethernet ports to maintain concurrent communication paths
• Includes a front-facing infrared port transceiver designated for low-level configuration and naming tasks
• Equipped with an integrated ambient temperature sensor to deliver proactive over-temperature alarms
• Provides clear faceplate visual indications via multiple diagnostic LED status indicators

Applications

• Gas and steam turbine control systems featuring Speedtronic technology
• Industrial Mark VIe Excitation Control configurations
• High-speed industrial ARCNET communication network installations
• Automated process control environments utilizing real-time QNX architectures

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Board Interfacing: Mount the module directly onto the designated JPDV interface terminal rack. Unlike standard I/O packs, it does not employ a separate detached terminal block.
• Securing Content: Ensure the module is properly seated and completely locked down onto the JPDV assembly by firmly tightening down the integrated connectors.
• Cable Routine: Attach all necessary data lines, including the dual 100 MB network communication lines and the primary 3-pin power connection cable.
• Power Application: Apply a rated 28 V dc typical power supply line through the power input port, then run initial system configurations to establish structural network handshakes as outlined in instruction manual GEH-6800 Vol II.

Compliance and Certifications

• Class 1, Div. 2 Hazardous Area Rating