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Product Overview
The GE IS220PDIAH1A is a Mark VIe discrete input I/O pack used to interface field contact signals with a GE distributed turbine control system. It connects to one or two I/O Ethernet networks and an associated discrete input terminal board, providing a practical interface between field wiring and the control network. The pack can handle up to 24 contact inputs and supports terminal-board-specific feedback signals. GE documentation identifies compatible terminal boards including IS200STCIH1A, IS200STCIH2A, IS200STCIH8A, IS200TBCIH2C, and IS200TBCIH4C.
Technical Specifications — GE IS220PDIAH1A
| Parameter | Value |
|---|---|
| Product Model | IS220PDIAH1A |
| Manufacturer | GE |
| Product Type | Mark VIe Discrete Input I/O Pack |
| Power | 28 VDC, 0.23 A max |
| Communication / Protocol | I/O Ethernet; dual RJ-45 network connections |
| Operating Temperature | Refer to applicable Mark VIe system documentation |
| Mounting | Installed with compatible terminal board |
| Dimensions (H × W × D) | Approx. 86.2 × 149 × 121 mm, depending on measurement method |
| Weight | Approx. 0.5 kg |
| Typical Interfaces | Dual RJ-45 Ethernet, 3-pin power input, DC-37 field interface |
| Input Capacity | Up to 24 contact inputs |
| Compliance | Applicable Mark VIe hazardous-location certifications |
The GE certification documentation specifies a 28 VDC maximum input current of 0.23 A for this configuration and identifies approved terminal-board combinations.
GE IS220PDIAH1A
Key Features and Benefits — GE IS220PDIAH1A
- Supports up to 24 discrete contact inputs.
- Provides an electrical interface between field terminal boards and I/O Ethernet networks.
- Uses dual Ethernet connections for compatible Mark VIe network architectures.
- Includes local LED diagnostics for operating and communication status.
- Supports terminal-board-specific voltage configurations.
- Suitable for turbine control, generator systems, and other distributed industrial automation applications.
The processor board is common to the Mark VIe distributed I/O pack family, while the acquisition section is dedicated to discrete input processing. That division makes the module straightforward to identify within an installed Mark VIe cabinet.
Related Models
GE IS220PDIAH1B: A related Mark VIe discrete input pack with broader compatibility across certain newer terminal-board configurations.
GE IS220PDOAH1A: A Mark VIe discrete output pack designed for output signal interfacing rather than contact input acquisition.
GE IS220PAICH1A: A Mark VIe analog input pack intended for analog process signals.
GE IS220PRTDH1A: A Mark VIe resistance temperature detector input pack for RTD-based temperature measurement.
GE IS220PDIAH1A
Installation and Maintenance — GE IS220PDIAH1A
Before installation, verify the complete part number and confirm the associated terminal board. Check the Ethernet connections, DC power wiring, and field-side connector for damage or contamination.
Power should be removed according to the plant’s electrical safety procedure before replacing the I/O pack. After installation, confirm that the module receives the correct supply voltage and that the controller recognizes the I/O device. Check network link indicators and verify individual input states against known field conditions.
For critical turbine-control systems, recording the original module position and terminal-board configuration before removal is a worthwhile maintenance practice.
Product Warranty — GE IS220PDIAH1A
Warranty coverage depends on the supplier and equipment condition. For new, surplus, or refurbished inventory, confirm the serial number, hardware revision, inspection status, and warranty period before purchase. Functional testing documentation is recommended for critical control applications.
The GE IS220PDIAH1A is best treated as a complete Mark VIe I/O component, with terminal-board compatibility and network configuration verified before replacement.
