Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | IS220PDOAH1A |
| Functional Acronym | PDOA |
| Product Type | Discrete Output Pack |
| System Compatibility | GE Mark VIe / Mark VIeS |
| Relay Channels | Up to 12 |
| Compatible Terminal Boards | TRLY (electromagnetic) and SRLY (solid-state) series |
| Communication | Dual RJ-45 Ethernet (IONet) |
| Terminal Connection | DC-37 pin connector |
| Power Input | Three-pin power connector |
| Diagnostics | Front-panel LEDs (Power, Attention, TxRx, Link) + infrared port |
4. Product Introduction (Anti-Template)
The GE IS220PDOAH1A is a Discrete Output Pack (PDOA) designed for the Mark VIe and Mark VIeS turbine control systems. It provides the electrical interface between one or two I/O Ethernet networks and a discrete output terminal board. The pack contains a shared processor board used across Mark VIe distributed I/O packs plus dedicated circuitry for discrete output functions.
It can control up to twelve relays and accepts feedback signals from the associated terminal board. Compatible terminal boards include the TRLY series (electromagnetic relays) and SRLY series (solid-state relays). The module mounts directly onto the terminal board via a DC-37 connector, receives power through a three-pin input, and communicates with the controller over dual RJ-45 Ethernet ports. Status LEDs and an infrared diagnostic port support local troubleshooting. The pack is used to drive field devices such as solenoids, contactors, and indicator lamps in gas and steam turbine control applications.
IS220PDOAH1A
IS220PDOAH1A
IS220PDOAH1A
IS220PDOAH1A
5. QC, Procurement & Logistics SOP
- Inbound Verification – Confirm full part number (IS220PDOAH1A), revision level, connector condition, and LED functionality if powered. Photograph all labels.
- Functional Testing – Mount on a compatible terminal board where possible, apply power, and verify status LEDs and Ethernet link. Full validation requires the host controller and relay loads.
- QA & Packaging – Protect the DC-37 and Ethernet connectors, clean the module, and pack in anti-static protective packaging.
- Global Logistics & Export Compliance – Classify under the correct HS code for industrial turbine control I/O modules. Packaging must protect against electrostatic discharge; export documentation is prepared to minimize customs delays.
6. Technical Pitfalls & Integration Warnings
Terminal Board Matching – The pack must be paired with the correct TRLY or SRLY terminal board. It is not compatible with DIN-rail DRLY boards.
Relay Type – Confirm whether the application uses electromagnetic or solid-state relays and select the matching terminal board.
Power-Up Behavior – The design includes provisions to keep relays dropped out during power-up and initialization; verify this behavior after replacement.
Network Configuration – Dual Ethernet ports support redundant IONet. Ensure cabling and network settings match the system design (simplex, dual, or TMR).
7. Frequently Asked Questions (FAQ)
What is the realistic global lead time for a verified IS220PDOAH1A?
As a specialized Mark VIe discrete output pack, availability depends on surplus stock. Typical lead time after verification is 5–15 business days plus standard shipping.
What is the primary function of this module?
It is a Discrete Output Pack that interfaces discrete/relay terminal boards with the Mark VIe IONet Ethernet network and controls up to 12 relays.
How many relay channels does it support?
Up to 12 relay channels, depending on the terminal board.
What terminal boards is it compatible with?
TRLY series (electromagnetic relays) and SRLY series (solid-state relays). It is not compatible with DIN-rail DRLY boards.
What system is it used with?
GE Mark VIe and Mark VIeS turbine control systems.
Is the module still in production?
Mark VIe remains an active platform. Specific PDOA revisions are available through GE channels and surplus specialists depending on current production status.
What should be confirmed before ordering a replacement?
Exact part number and revision (IS220PDOAH1A), compatible terminal board type (TRLY or SRLY), system redundancy configuration, and required relay type.
