The IS215WEPAH2AB Wind Energy Pitch Axis Board at a Glance

The IS215WEPAH2AB is a WEPA board from GE's Speedtronic Mark VIe wind-turbine controls, supplied here with an IS210BPPCH1ACA I/O pack processor. WEPA stands for Wind Energy Pitch Axis: the board dedicated to controlling and monitoring a blade-pitch axis within the turbine's Mark VIe distributed I/O. As with every Mark VIe pack, the WEPA board is the application-specific half and the BPPC processor riding on it is the compute-and-network half of the node.

Because the two are offered together, this listing can rebuild both sides of a failed pitch node at once. That is useful when a board comes back from a hub with unclear history and you want a known processor and interface paired from the start.

Troubleshooting a Pitch Axis Card Before Replacement

One advantage of a three-blade machine is that you always have two known-good references for any symptom. Put them to work before swapping this board:

• Compare the axes. If only one axis faults, compare its feedback and drive behavior against the other two; identical wiring makes a field-side problem stand out quickly.
• Field feedback and drive. Encoder or resolver feedback, the pitch drive, and hub cabling fail more often than the card itself.
• Swap test. Moving a suspect board and its processor to a known-good axis (or the reverse) shows whether the fault follows the board or stays with the axis.
• Processor and IONet. A node that goes silent points to the BPPC, its power feed, or the IONet path rather than the pitch electronics.
• Configuration. After any swap, check the board's configuration and firmware in ToolboxST so a healthy board is not held offline by a mismatch.

On a TMR machine, confirm which of <R>, <S>, or <T> actually voted out in the diagnostic log before committing to a replacement.

Why the Bundled IS210BPPCH1ACA Processor Matters

The IS210BPPCH1ACA is a specific, later revision of the BPPC I/O pack processor (the ACA suffix marks a subsequent revision of the board). It provides the two Ethernet ports that tie the pack to IONet, the Mark VIe I/O network, with the second port giving a redundant route to the controllers. As a C-generation processor it runs on ControlST V04.04 or later and can share a TMR system with older BPPB-based packs, where swapping a BPPB for a BPPC is normally handled by auto-reconfiguration. It is a standard pack, not a Mark VIeS safety processor, which would carry an S-group suffix instead.

Matching WEPA Revisions and Suffixes

The number reads as the assembly designator (IS215), the functional acronym (WEPA), a hardware group (H2), and a revision suffix (AB). WEPA boards exist in more than one hardware group — H1 and H2 are both in the field — so match the group before the revision, then get the revision as close as your spares allow. The companion IS210BPPCH1ACA follows the same scheme as a BPPC processor. Our GE Speedtronic Part Number Decoder details every field in the number.

What Your Quote Request Should Contain

To match this pitch-axis assembly precisely, please provide:

• The full part numbers for the IS215WEPAH2AB and the IS210BPPCH1ACA, each with suffix.
• The revision codes on the labels, and a photo of the labels if available.
• Turbine model and whether the platform is Mark VI or Mark VIe.
• Quantity and how urgent the outage is.

Request a Quote on the IS215WEPAH2AB

This assembly is offered in used condition, cleaned and tested. 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. Use the Request a Quote button to start, and browse the wider GE Speedtronic Turbine Control Boards range for companion parts.