General Electric IS220PAOCH1B Mark VIe Analog Output Module

Description

The IS220PAOCH1B is an analog output I/O module manufactured by General Electric as part of the Mark VIe Series for distributed control systems. The PAOC (Analog Output Pack) serves as the electrical interface between one or two I/O Ethernet networks and an analog output terminal board. It contains a common processor board utilized across Mark VIe distributed I/O packs, alongside a dedicated analog output acquisition board pair. This pack supports up to eight simplex 0–20 mA current loop outputs and features an integrated analog-to-digital converter to provide current feedback monitoring for each output channel. Inputs are processed via dual RJ45 Ethernet connectors and a three-pin power input, while outputs are delivered through a DC-37 pin connector that directly mates with the terminal board. The unit features indicator LEDs for visual diagnostics and supports local diagnostic communication via an infrared port.

Features

• Serves as an electrical interface between I/O Ethernet networks and analog output terminal boards
• Incorporates a common processor board used across Mark VIe distributed I/O packs
• Equipped with a dedicated analog output acquisition board pair
• Provides an integrated analog-to-digital converter for real-time current feedback verification
• Includes dual RJ45 Ethernet connectors for network input and a three-pin power input
• Utilizes a DC-37 pin connector to directly mate with the corresponding terminal board
• Features indicator LEDs for clear visual diagnostic monitoring
• Supports local diagnostic communication via an integrated infrared port
• Contains a mechanical normally open relay for each analog output to enable or disable the output path
• Integrates a built-in temperature sensor to monitor internal board conditions

Applications

• Turbine control systems
• Power generation facilities
• Industrial automation and Distributed Control Systems (DCS)
• Safety-critical control environments

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Configuration Flexibility: The device supports simplex, dual, or Triple Modular Redundant (TMR) configurations depending on system redundancy requirements.
• Terminal Board Compatibility: The module is compatible with the TBAOH1C analog output terminal board and the STAO board. It is not compatible with the DIN-rail mounted DTAO board.
• Ambient Thermal Considerations: While the pack exterior is rated for -40 to 70 Celsius, the maximum ambient temperature must be derated in application due to its dense triple board internal layout.
• Output Impedance: The minimum output impedance is restricted by the minimum series equivalent resistance of the customer load across the terminal board screws.