Description
🔹 Product Description
The GE General Electric IS220PAOCH1A is an Analog Output I/O Pack designed for the GE Mark VIe turbine control system. It provides the interface between one or two I/O Ethernet networks and a compatible analog output terminal board. The PAOC pack supports up to eight simplex 0–20 mA current-loop outputs and includes current-feedback measurement for the output channels. It uses dual Ethernet communication and connects to the terminal board through a DC-37 interface. GE Mark VIe documentation identifies the PAOC architecture as an analog-output pack for applications requiring controlled analog current signals.
🔹 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | GE General Electric |
| Model | IS220PAOCH1A |
| Series | Mark VIe |
| Product Name | Analog Output I/O Pack Module |
| Functional Type | PAOC Analog Output Pack |
| Place of Manufacture | USA |
| Product Status | New / New Surplus |
| Dimensions | Approx. 8.26 × 4.19 × 12.1 cm |
| Weight | Approx. 0.44–0.50 kg |
| Origin | United States |
| Power | 24–28 VDC nominal |
| Discontinued | Legacy product; verify exact system compatibility |
🔹 Common Questions & Answers
Q: What is the IS220PAOCH1A used for?
A: It provides analog output signal processing and communication between the Mark VIe control system and compatible analog output terminal boards.
Q: How many analog outputs does it provide?
A: The IS220PAOCH1A provides up to eight simplex 0–20 mA current-loop outputs.
Q: What terminal boards are compatible?
A: The PAOC pack is designed for use with compatible TBAO and STAO terminal-board configurations. The exact terminal-board revision should be verified before replacement.
Q: How does the module communicate with the controller?
A: It uses two RJ45 Ethernet interfaces for connection to one or two I/O Ethernet networks.
Q: What is the output signal range?
A: The standard PAOC configuration provides 0–20 mA analog current outputs.
Q: Does the module provide output feedback?
A: Yes. The PAOC architecture includes analog-to-digital conversion for current feedback from the output channels.
Q: What should be checked before installation?
A: Verify the complete IS220PAOCH1A part number, hardware revision, terminal-board revision, wiring, I/O network configuration, and Mark VIe project configuration.
Q: What should be checked if an analog output is incorrect?
A: Check the 24–28 VDC supply, Ethernet connections, DC-37 connection, terminal-board wiring, output-loop load, field device, diagnostic LEDs, and controller configuration.
Q: Is the IS220PAOCH1A the same as the 200 mA version?
A: The standard IS220PAOCH1A is documented as an 8-channel 0–20 mA analog output pack. GE Mark VIe product families also include other analog I/O variants, so the complete model number should be matched rather than relying only on a marketplace description.
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