Products Description
The IS220PAOCH1A is a dedicated analog output interface module designed specifically for the GE Mark VIe turbine control system, primarily used in the automated control of gas turbines and steam turbines. This module converts digital control commands from the control logic into precise analog output signals to drive field actuators such as control valves and variable frequency drives.
Belonging to the "PAOC" (Processor Analog Output Converter) family within the Mark VIe I/O series, this module serves as a critical component of the distributed I/O infrastructure. It interfaces directly with analog terminal boards and the IONet network.
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Functional Description
The primary function of the IS220PAOCH1A module is to convert digital control data into analog current output, thereby driving field devices:
Analog Current Loop: Supports multiple analog current output channels (typically 0–20 mA), enabling direct connection to field actuators such as proportional valves and variable speed drives.
Feedback Conversion: Certain models incorporate a built-in current feedback converter, enabling closed-loop verification of analog outputs.
Network Interface: Communicates with the Mark VIe distributed control network via dual RJ-45 Ethernet ports, ensuring reliable data connectivity.
Diagnostic Visibility: Onboard LED indicators display operational status and assist with real-time troubleshooting during commissioning or maintenance.
Application Scenarios
Industrial Turbines and Power Plant Automation:
Drives proportional fuel control valves and actuators to achieve turbine combustion control.
Provides analog signal outputs to variable frequency drives and proportional pressure regulators.
Integrates analog control loops within gas turbine combined cycle systems to enable precision instrument feedback.
Specifications
| Specification | Details |
|---|---|
| Part Number | IS220PAOCH1A |
| Product Type | Analog Output I/O Pack |
| Compatible System | GE Mark VIe / Mark VIeS Turbine Control System |
| Output Channels | Up to 8 isolated analog outputs |
| Output Signal Type | 0–20 mA current loops (typical) |
| Power Input | 3‑pin DC power connection |
| Connector | DC‑37 connection to terminal board |
| Status Indicators | Front LED diagnostics |
| PCB Protection | Conformal coating for industrial environments |
| Operating Temp. | Industrial range suited for cabinet installation |
Product FAQ – IS220PAOCH1A
IS220PAOCH1A
Q1: What is the function of the IS220PAOCH1A module?
A: This module provides isolated analog current output from digital control logic to field actuators within the Mark VIe turbine system.
Q2: How does it connect to other parts of the system?
A: It enables network communication via dual IONet Ethernet ports and interfaces with analog terminal boards using DC-37 connectors.
Q3: What types of outputs does it support?
A: Typically supports 0-20mA current loop outputs, compatible with standard industrial actuators.
Q4: Does it provide diagnostic feedback?
A: Yes-LED indicators display operational status and assist in fault location during operation and commissioning.
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