Description
- 🔹 Product Description
The GE IS220PAOCH1A is a PAOC Analog Output I/O Pack designed for the GE Mark VIe turbine control system. It provides the electrical interface between one or two I/O Ethernet networks and a compatible analog output terminal board. The pack supports up to eight simplex 0–20 mA current-loop outputs and provides current feedback monitoring for the output channels.
The IS220PAOCH1A uses dual RJ-45 Ethernet ports for IONet communication, a three-pin power connection, and a DC-37 connector for direct connection to the associated terminal board. Documented compatible terminal boards include the TBAOH1C and STAO configurations; the H1A pack is not intended for the DTAO DIN-rail terminal board.
Although some commercial listings describe this model as a “200 MA Analog I/O Pack,” the standard PAOCH1A technical documentation specifies 0–20 mA analog outputs. The 0–200 mA capability belongs to other Mark VIe analog-output configurations, so the exact terminal-board and I/O-pack combination should be verified before system integration.
🔹 Product Datasheet
Parameter Value Brand General Electric (GE) Model IS220PAOCH1A Series Mark VIe / Mark VIeS Product Name Analog Output I/O Pack Module Functional Acronym PAOC Output Type 0–20 mA Current Loop Number of Outputs 8 Simplex Analog Outputs Communication Dual 10/100 Mbps Ethernet / IONet Terminal Interface DC-37 Compatible Terminal Boards TBAOH1C / STAO Processor Board BPPB Acquisition Board BPAOH1A Power Input 28 VDC nominal Place of Origin USA Product Status Mark VIe Industrial Control I/O Pack Dimensions Approx. 8.26 × 4.19 × 12.1 cm Weight Approx. 0.44–0.50 kg Discontinued Current production status should be verified 🔹 Common Questions & Answers
Q: What is the GE IS220PAOCH1A used for?
A: It is a Mark VIe analog output I/O pack used to interface the control network with analog output terminal boards.Q: How many analog outputs does it provide?
A: The PAOCH1A provides up to eight simplex 0–20 mA current-loop outputs.Q: Is IS220PAOCH1A a 200 mA output module?
A: The standard PAOCH1A documentation specifies 0–20 mA outputs. The “200 mA” wording appearing in some listings should not be used to assume 0–200 mA operation without verifying the specific system configuration.Q: Which terminal boards are compatible?
A: Documented compatible boards include TBAOH1C and STAO configurations. The PAOCH1A is not compatible with the DTAO DIN-rail terminal board.Q: What communication interface does the pack use?
A: It uses dual RJ-45 Ethernet connections for IONet communication.Q: How does the pack connect to the terminal board?
A: The PAOCH1A connects directly to the terminal board through a DC-37 connector and is mechanically secured using the mounting hardware provided by the terminal-board assembly.Q: Does the module support output-current feedback?
A: Yes. The PAOC includes analog-to-digital conversion for monitoring current feedback from the analog output channels.Q: Can one PAOC provide 16 analog outputs?
A: A single PAOC provides up to eight simplex outputs. Two PAOC packs can be used for configurations requiring 16 outputs, subject to the system architecture.Q: What should be checked before replacement?
A: Verify the complete IS220PAOCH1A part number, processor revision, terminal-board model and revision, output-current requirements, IONet wiring, and the Mark VIe ControlST/ToolboxST configuration.Q: What safety precautions are required?
A: Isolate the Mark VIe cabinet and associated field circuits before replacement. Verify that external power and field wiring are safe, and follow applicable GE maintenance and ESD procedures.🔹 Recommended GE Models
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