IS200AEPCH1A | General Electric Mark VIe Circuit Board

GE IS200AEPCH1A Mark VI Alternative Energy Pitch Center Module — 24VDC, RS-422, Conformal Coated

The IS200AEPCH1A is an Alternative Energy Pitch Center (AEPC) Module for GE's Mark VI turbine control platform. It serves as the central pitch control board for wind turbine applications, managing blade angle regulation and coordinating with the main turbine control system. The module features a primary board with a mounted auxiliary/daughter board populated with FPGAs, integrated circuits, and multiple connectors, all protected by conformal coating for harsh environmental conditions.

Key Specifications

• Manufacturer: GE Industrial Systems / GE Energy
• Series: Mark VI Speedtronic
• Type: Alternative Energy Pitch Center (AEPC) Module
• Power Input: 24 VDC, 8 A
• Communication Interface: 1 × RS-422
• Board Construction: Primary board + auxiliary/daughter board (mounted via standoffs and screws)
• Auxiliary Board Components: FPGA, integrated circuits, female connectors, transistors, diodes, resistors, capacitors
• Auxiliary Board Markings: DCOM, FA/00
• Primary Board Components: Three fuses, two terminal strips, integrated circuits, multiple jack connectors
• Mounting: Panel mount (factory-drilled holes in each corner with conductive rings)
• Faceplate: None (unlike many Mark VI boards)
• Coating: Conformal coating (moisture/salt spray/mildew resistant)
• Functional Acronym: AEPC
• Functional Revision: A (first), B (second)
• Artwork Revision: C
• Variant: H1
• Assembly Level: 200
• Country of Manufacture: Salem, VA, USA
• Status: Legacy / In production (limited availability)

Architecture & Functionality

• Wind Turbine Pitch Control: Central control module for blade pitch angle regulation in wind turbine applications
• Mark VI Integration: Compatible with Mark VI system ecosystem (I/O cards, communication modules, HMI interfaces)
• Auxiliary Board: Mounted near center of primary board via standoffs; contains FPGA and signal conditioning circuits
• Barcodes: Two barcodes attached to board surface for traceability
• Reference Designations: All components marked with reference designators for easy identification
• Related Models: IS200AEPAH1A (Energy Pitch Assembly), IS210AEPCH1B (updated variant), IS215AEPCH1B (Mark VIe version)

Installation Guide

1. Mount the IS200AEPCH1A using the factory-drilled holes in each board corner (conductive rings for grounding).
2. Connect 24 VDC power supply (8 A max) to the terminal strips.
3. Connect the RS-422 communication link to the pitch control network.
4. Wire pitch motor feedback and blade angle sensors to the jack connectors.
5. Verify three fuses are properly seated before power-up.
6. Power on and verify pitch control response via Mark VI HMI.
7. Ensure conformal coating integrity is maintained in offshore/harsh environments.

FAQ

Q: Is IS200AEPCH1A a core processor module?
A: No. Some sources incorrectly describe it as a 32-bit 400MHz core processor with Ethernet/Profibus. The IS200AEPCH1A is an Alternative Energy Pitch Center (AEPC) module for wind turbine blade pitch control. The "core processor" description applies to IS200ACLAH1A (Application Control Layer), not AEPC.

Q: What is the difference between IS200AEPCH1A and IS215AEPCH1B?
A: IS200AEPCH1A is the Mark VI version. IS215AEPCH1B is the Mark VIe updated version with enhanced features and RoHS compliance.

Q: What does the H1A suffix mean?
A: "H1" indicates conformal PCB coating and Group one Mark VI product grouping. "A" is the A-rated functional revision. The full part number IS200AEPCH1ABC indicates: H1 variant, A functional rev, B second functional rev, C artwork rev.

Q: Does it have a faceplate?
A: No. Unlike many Mark VI boards, IS200AEPCH1A does not have a faceplate attached. It mounts directly via corner drill holes.

Q: What is the auxiliary board for?
A: The auxiliary/daughter board contains FPGA, integrated circuits, and connectors for pitch control signal processing and communication. It is mounted to the primary board via standoffs and screws.

Q: Is this module backward compatible with Mark V?
A: No. IS200AEPCH1A is designed specifically for Mark VI systems. Mark V uses different pitch control architecture.

Selection Tips

• Mark VI wind turbine pitch control: IS200AEPCH1A
• Mark VIe wind turbine pitch control: IS215AEPCH1B
• Energy Pitch Assembly (related): IS200AEPAH1A
• Always verify: System generation (Mark VI vs VIe), pitch motor type, and RS-422 network configuration
• Order compatible cables: RS-422 for pitch control network; power cables for 24VDC/8A input
• Check environmental rating: Conformal coating suitable for offshore wind applications