IS215WEPAH2B: Pitch-Axis Control on the GE Mark VIe Wind Platform

The IS215WEPAH2B is a Wind Energy Pitch Axis (WEPA) board from GE's Mark VIe wind-turbine control system — a wind board, not a gas-turbine card. WEPA is the part of the turbine's distributed Mark VIe I/O that controls and monitors a single blade-pitch axis, holding the blade at the commanded angle for power regulation, load reduction and safe feathering. This listing supplies the WEPA board together with an IS200AEPAH1BKE companion board, so both interface halves of the pitch node arrive matched.

In a Mark VIe wind node the WEPA board is the application-specific interface, and a BPPC I/O pack processor provides the compute-and-network side, tying the node into IONet, the Mark VIe I/O network. Pairing the WEPA with its AEPA-series companion here rebuilds the field-interface side of a pitch axis in one step, which is useful when a board comes back from a hub with unclear history.

Pairing the WEPA Board With the IS200AEPAH1BKE

The bundled IS200AEPAH1BKE is an AEPA-series board — GE's Alternative Energy Power Assembly line used in the wind and alternative-energy branch of Mark VIe. In the pitch node the AEPA and WEPA boards handle the field-side interface and signal conditioning while a BPPC processor supplies the network and processing. Because a working node depends on every board being healthy and compatible, supplying the WEPA and the AEPA together removes one variable when you commission a repair. If only one of the two actually failed, identify which before ordering, and keep the third element — the I/O pack processor — in mind as the part that carries the node onto IONet.

Check the Blade, the Drive and the Feedback First

A three-blade machine gives you two known-good axes to compare against, so use them before condemning a pitch board:

• Compare axes. If a single axis faults, hold its feedback and drive behavior against the other two; identical wiring makes a field-side problem obvious.
• Field devices. Encoder or resolver feedback, the pitch drive, and the hub cabling fail far more often than the board itself.
• Move the suspect. Swapping a questionable board to a known-good axis shows whether the fault follows the board or stays with the axis.
• Node versus channel. A node that goes silent points to the processor, its power feed, or the IONet path rather than the pitch interface.
• Configuration. After any swap, confirm configuration and firmware in ToolboxST so a healthy board is not held offline by a mismatch.

On a triple-redundant machine, confirm which of <R>, <S> or <T> actually voted out in the diagnostic log before you replace hardware, and work the alarms against the GEH-6721 Mark VIe references.

Decoding IS215WEPAH2BB: Group, Coating and Revision

The number breaks into the IS215 assembly designator, the WEPA functional acronym, an H that denotes the conformal-coated board style, a group digit (2), and the revision letters — the primary B and, on the full IS215WEPAH2BB, a secondary B. WEPA boards exist in more than one group (H1 and H2 are both in the field), so match the group before you chase the revision, then get the revision as close as your spares allow. Our GE Speedtronic Part Number Decoder details each field of the number.

WEPA Hardware Groups and Companion Boards

A complete pitch axis is a small stack: the WEPA interface board, its AEPA-series companion (here the IS200AEPAH1BKE), and a BPPC I/O pack processor that carries the node onto IONet. When you source spares, record every number on the assembly rather than just the WEPA, because a wind node is built from matched boards. You will find related wind and turbine control hardware in our GE Speedtronic Turbine Control Boards catalog.

Information That Speeds Up Your Wind Quote

To match this pitch-axis pair precisely, please send:

• The full part numbers with suffixes — IS215WEPAH2BB and IS200AEPAH1BKE — plus the revision codes on the labels, with photos if you can.
• The turbine model and confirmation that the platform is Mark VIe wind.
• Any BPPC processor or other node boards you are matching at the same time.
• Quantity and how urgent the situation is.

Request a Quote on the IS215WEPAH2B

This IS215WEPAH2B is offered as new surplus, open box, with a one-year warranty. Tell us which axis and revision you are matching and we will confirm availability from stock. Quotes are returned within 24 hours, we ship worldwide DDP, and purchase orders are welcome from qualified operators and EPCs. Start with the Request a Quote button.

General Information about the Product
Part Number	IS215WEPAH2B Mark VI IS200
Description	GE General Electric IS215WEPAH2B IS215WEPAH2BB With IS200AEPAH1BKE OPEN BOX
Condition	newSurplusNoBox New Surplus Open Box. 1 Year Warranty.