Description
🔹 Product Description
The GE General Electric IS220PDIAH1A REV. C is a 24-channel Discrete Contact Input I/O Pack designed for GE Mark VIe distributed turbine control systems. It provides the interface between one or two I/O Ethernet networks and compatible discrete input terminal boards. The module combines a processor board with a dedicated discrete-input acquisition board for signal acquisition, filtering, conditioning, diagnostics, and Ethernet communication. It supports up to 24 discrete contact inputs and can be used with compatible TBCI, STCI, and TICI terminal boards in simplex, dual, or TMR system configurations.
🔹 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | GE General Electric |
| Model | IS220PDIAH1A REV. C |
| Series | Mark VIe |
| Product Name | 24-Channel Discrete Contact Input I/O Pack |
| Functional Acronym | PDIA |
| Place of Manufacture | USA |
| Product Status | New / New Surplus |
| Dimensions | Approx. 15.9 cm high × 17.8 cm; verify actual unit |
| Weight | Approx. 0.8 kg |
| Power | 28 VDC nominal; 27.4 VDC minimum |
| Discontinued | Legacy / availability depends on existing inventory |
🔹 Common Questions & Answers
Q: What is the IS220PDIAH1A REV. C used for?
A: It is used to acquire discrete contact signals and transfer them through the Mark VIe I/O network to the turbine control system.
Q: How many input channels does it provide?
A: The PDIA I/O Pack supports up to 24 discrete contact inputs.
Q: Which terminal boards are compatible?
A: Compatible terminal boards include models such as IS200STCIH1A, IS200STCIH2A, IS200STCIH8A, IS200TBCIH2C, and IS200TBCIH4C.
Q: What type of signals does it handle?
A: It is designed for discrete contact inputs such as switches, alarms, relay contacts, and other on/off field signals.
Q: Does the module provide input isolation?
A: The PDIA pack uses optical isolation for its input channels, with isolation specified up to 1500 V.
Q: How does the module communicate with the controller?
A: The I/O pack uses Ethernet connections to communicate with the Mark VIe control system and provides two Ethernet network interfaces.
Q: Can it be used in redundant configurations?
A: Yes. Mark VIe architectures can use PDIA packs in simplex, dual, and TMR configurations, depending on the system design and associated terminal boards.
Q: What should be checked before replacement?
A: Verify the complete part number, REV. C hardware revision, terminal-board model, field input voltage, Ethernet connections, system configuration, and existing Mark VIe documentation.
Q: What should I check if an input channel does not respond?
A: Check the field contact, input voltage, terminal-board wiring, DC-37 connection, module power, Ethernet link status, LED diagnostics, and controller configuration before replacing the I/O pack.
🔹 Recommended GE Models
- IS220PDIOH1A — Discrete Input/Output I/O Pack
- IS220PDIIH1A — Isolated Discrete Input I/O Pack
- IS220PTCCH1A — Thermocouple Input Module
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- IS220PAICH1A — Analog Input Module
- IS220PAOCH1B — Analog Output Module
- IS220PSVOH1B — Servo Control I/O Module
- IS220PTURH1B — Turbine I/O Module
- IS220PPDAH1B — Power Distribution I/O Module
- IS220PGENH1A — Generator I/O Module
- IS200STCIH1A — Discrete Input Terminal Board
- IS200STCIH2A — Discrete Input Terminal Board
- IS200STCIH8A — Discrete Input Terminal Board
- IS200TBCIH2C — Discrete Input Terminal Board
- IS200TBCIH4C — Discrete Input Terminal Board
