What the IS200AEADH1A Does in a Wind Turbine Control Cabinet

The IS200AEADH1ABA is GE's Input/Output Grid Fork board — functional acronym AEAD, hardware group H1A, revision BA. GE Energy catalogs the AEAD acronym in the Mark VIe wind line, the Speedtronic-derived control platform GE built for wind turbine and balance-of-plant (BOP) applications. In service, the board works as an I/O interface: control and field wiring lands on its terminal strips, and a bank of onboard relays plus supporting circuitry passes switched signals between the turbine control electronics and the equipment they manage.

Two details separate this board from the VME-style cards most engineers picture when they hear IS200. First, it has no front faceplate and was not built to slide into the 13- or 21-slot VME rack — it is a rectangular, cabinet-mounted module with drilled corner holes for mounting. Second, it carries no diagnostic LEDs, which changes how you troubleshoot it (more on that below). The H1A board carries three parallel vertical terminal strips of twelve pins each, stab-on and plug connectors, a right-angle connector running along one board edge, two heat sinks, and a group of eight relays, all protected by conformal coating.

Mark VI or Mark VIe Wind? Where AEAD Actually Belongs

You will see this exact part filed under Mark VI IS200 by many distributors — including in this listing's title — because the IS200 numbering system spans GE's Mark VI and Mark VIe-era hardware and resellers sort by prefix. The functional catalogs at the major surplus houses, however, place AEAD specifically in the Mark VIe Wind series. Practically, that means the mating hardware and drawings you should be checking live on the wind and BOP side of your plant records, not in the gas turbine VME racks. If your documentation says otherwise, send a photo of the label with your request — matching the physical board always beats arguing over catalog categories. Our GE Speedtronic Part Number Decoder walks through how the IS200 numbering carries across product lines.

Before You Order: Prove the Fault Is on the Board

Because the AEAD has no status LEDs, it cannot tell you it has failed. A meaningful share of suspected AEAD failures turn out to be wiring or upstream problems, so run this elimination sequence before you commit to a replacement:

• One dead channel: start at the termination, not the board. Loose stab-on connections, a backed-off screw terminal, or corrosion at the terminal strips — realistic in a vibrating tower or outdoor BOP cabinet — will mimic a failed channel exactly.
• All channels dead: that pattern points upstream. Verify the power feed to the module and the cable or connector back to the controller before condemning the board. A single board rarely loses every channel at once while its supply is healthy.
• Relay channels: relays are the main electromechanical wear items here. A relay that audibly clicks but does not pass the circuit suggests worn contacts — a genuine board-level fault. A relay that never energizes at all points first to the drive signal or supply feeding it.
• Meter work: separate coil-side from contact-side checks. Coil never energized means look upstream; contacts open with the coil pulled in means the board has earned its retirement.

If the board comes out the loser in that process, you are in the right place.

Reading the Part Number: IS200AEAD + H1A + BA

IS200 identifies a standard-assembly GE control board of the Mark VI/VIe hardware era. AEAD is the functional acronym for this Input/Output Grid Fork design. H1A is the hardware configuration group — the AEAD family also exists in H3A and H4A groups, which distributors list as Input Terminal Board variants, so the group is not interchangeable shorthand. The trailing letters (here BA) are the revision level. When replacing, match the full string: another AEAD with a different H-group is a different board, and revision changes should be confirmed against your records rather than assumed compatible.

Open-Box Condition, Explained

This IS200AEADH1ABA is new surplus without the original outer box — factory packaged, unused, sold as open box. For a board family whose OEM documentation shipped only with the original purchase and is scarce online, unused surplus is often the cleanest path to a like-for-like replacement: no prior field hours, no repair history to evaluate. The condition and warranty terms for this specific unit are stated in the table below.

Request a Quote for IS200AEADH1ABA

To quote fast and match exactly, include: the full part number with revision (IS200AEADH1ABA), a photo of the board label, the turbine or BOP system it serves, the control system generation from your records, quantity, and how urgent the outage is. We respond within 24 hours, ship worldwide on DDP terms, and accept purchase orders. Browse related hardware in our GE Mark VI IS200 Boards collection or the wider GE Speedtronic Turbine Control Boards range, then use the Request a Quote button to get moving.

General Information about the Product
Part Number	IS200AEADH1A Mark VI IS200
Description	GE IS200AEADH1A IS200AEADH1ABA Turbine Control board. Mark VI OPEN BOX
Condition	newSurplusNoBox Factory Packaged. With 1 Year Warranty.