Where the IS200AEADH1ACA Fits in the Mark VIe Wind Platform

Every AEAD module in the field is doing the same quiet job: sitting between a wind turbine's control electronics and the wiring that reaches the actual machinery. The IS200AEADH1ACA is the CA revision of GE's Input/Output Grid Fork module, hardware group H1A — a family that GE Energy's functional catalog places in the Mark VIe wind turbine control line, which also covers balance-of-plant duties at wind sites. Field wiring terminates on the module's three twelve-pin terminal strips and auxiliary connectors; a grouped bank of eight relays and the surrounding circuitry do the switching and signal handoff.

Because resellers sort by the IS200 prefix, you will find AEAD boards shelved under Mark VI just as often as under Mark VIe wind — both labels point at the same physical hardware. What matters for your order is the full part number and, ideally, a label photo.

Relay Wear and Other Failure Modes Worth Checking First

On a board built around electromechanical relays, the relays are the components with a duty-cycle clock running. But before you conclude this board has aged out, work through what else produces identical symptoms:

• The termination, not the channel. A stab-on connector that has walked loose or a corroded strip terminal reads exactly like a dead I/O point. Cabinets at wind sites live with vibration and temperature swings; reseat and inspect before anything else.
• The command, not the relay. A relay that never picks up may simply never be told to. Confirm the drive signal reaches the coil side before scoring the relay as failed.
• The contact, not the coil. The classic true board fault: the relay clicks, the circuit stays open. Pitted or worn contacts on a high-cycle channel are a legitimate reason to replace the module.
• The feed, not the board. If everything on the module went dark at once, suspect its supply or the cable back to the controller. Whole-board failures are rarer than dead feeds.

No LEDs exist on this module to shortcut any of this — the H1A carries no onboard indicators — so ten minutes with a meter is the honest path to a verdict.

H1A vs H3A vs H4A: Picking the Right AEAD Variant

The AEAD acronym covers more than one physical configuration. Alongside the H1A grid fork module described here, the family includes H3A and H4A groups that surplus catalogs list as Input Terminal Board variants. Same four-letter function code, different hardware — the groups are not interchangeable, and ordering by acronym alone is how the wrong board ends up on a crane lift to a nacelle. Match the H-group exactly. If you are unsure which variant your cabinet holds, the layout is a giveaway: the H1A is the faceplate-free rectangular module with the relay bank, right-angle edge connector, and two heat sinks under conformal coating.

The CA Revision and How to Match It

Reading IS200AEADH1ACA left to right: IS200 marks a GE standard-assembly control board of the Mark VI/VIe hardware generation; AEAD is the function code; H1A the configuration group; CA the revision. Within the H1A group we also stock earlier revisions (AA, BA) — a CA unit is a later state of the same design. Whether revisions interchange in your slot depends on your site's documentation, so confirm against records rather than assuming either direction. For the general grammar of these numbers, see the GE Speedtronic Part Number Decoder.

Send Us These Details for an Exact Match

A complete request lets us quote once, correctly:

• Full part number with revision: IS200AEADH1ACA
• Photo of the board label (settles group and revision instantly)
• What the module serves — turbine model or BOP system — and the control generation in your records
• Quantity, including any spare you want on the shelf for the next event
• Timeline: unit down today, or restocking ahead of a maintenance campaign

Get Your IS200AEADH1ACA Quote in 24 Hours

This unit is used, cleaned, and tested, with condition and warranty stated in the table below. Hit Request a Quote with the details above and we respond within 24 hours; we ship DDP worldwide and accept purchase orders. Related stock lives in the GE Mark VI IS200 Boards collection, with the broader lineup under GE Speedtronic Turbine Control Boards.

General Information about the Product
Part Number	IS200AEADH1A Mark VI IS200
Description	IS200AEADH1A By General Electric IS200AEADH1ACA Input/Output Grid Fork Module
Condition	used Cleaned and Tested. With 1 Year Warranty.