Description
The GE IS200AEPAH1A is an AEPA (Alternative Energy Pitch Axis) printed circuit board associated with the GE Mark VIe wind-turbine control platform. It is designed for pitch-axis control and monitoring, handling analog signals, encoder feedback, discrete signals, relay outputs, and serial communications.
The board is a revised version of the IS200AEPAH1 parent board, with functional revision A. Available technical records identify conformal coating and an optional auxiliary board mounted to the main PCB.
🔧 Key Features
- GE Mark VIe Wind Turbine control hardware
- AEPA Alternative Energy Pitch Axis function
- Analog and discrete I/O capability
- Incremental and absolute encoder interfaces
- Analog output
- Multiple relay outputs
- RS-485 communication interfaces
- Brake-control output
- Conformal-coated PCB
- Optional auxiliary board configuration
- LED status indication
- Surge protection using MOV components
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | GE |
| Model | IS200AEPAH1A |
| Functional Acronym | AEPA |
| Functional Description | Alternative Energy Pitch Axis |
| Product Type | Mark VIe Printed Circuit Board |
| Application | Wind Turbine Pitch Control |
| Analog Inputs | 8 |
| Incremental Encoder Input | 1 |
| Absolute Encoder Input | 1 |
| Analog Output | 1 |
| Discrete Inputs | 20 |
| Discrete Output | 1 |
| Relay Outputs | 8 |
| RS-485 Interfaces | 2 |
| Brake Control Output | 1 |
| PCB Coating | Conformal coating |
| Functional Revision | A |
| Auxiliary Board | Optional |
| Status Indication | LED |
| Surge Protection | MOV components |
| Series | GE Mark VIe Wind |
The I/O configuration above is reported by technical records for the AEPA board; GE-specific hardware revisions should be matched before treating these values as guaranteed for a particular assembly.
⚡ Functional Description
The IS200AEPAH1A acts as an interface and control PCB for alternative-energy pitch-axis equipment. Its I/O combination allows the control system to receive sensor and encoder information, monitor discrete field conditions, communicate with external devices, and operate pitch-related outputs.
The board includes eight analog inputs, incremental and absolute encoder inputs, an analog output, 20 discrete inputs, eight relay outputs, two RS-485 interfaces, and a brake-control output.
🏭 Typical Applications
- Wind turbine blade pitch control
- Pitch actuator monitoring
- Encoder feedback acquisition
- Wind turbine protection
- Renewable-energy control systems
- GE Mark VIe turbine cabinets
- Industrial turbine auxiliary control
🔌 Installation & Configuration
- Verify the complete board number IS200AEPAH1A.
- Check the functional revision and PCB condition.
- Compare connector locations with the existing board.
- Verify the optional auxiliary-board configuration.
- Record all field wiring before replacement.
- Install using appropriate ESD protection.
- Restore the original configuration.
- Check encoder and analog signal connections.
- Verify relay, discrete, and communication interfaces.
- Perform controlled functional testing before returning the turbine to service.
🛠️ Commissioning Checklist
- Check PCB identification
- Inspect connectors and pins
- Verify auxiliary-board installation
- Check analog input signals
- Verify encoder feedback
- Test discrete inputs
- Check relay outputs
- Verify analog output
- Test RS-485 communication
- Check brake-control output
- Review Mark VIe diagnostics
- Confirm pitch-axis operation
⚠️ Replacement Note
Be careful with similar-looking GE AEPA part numbers. The IS200AEPAH1A is specifically identified as an AEPA Alternative Energy Pitch Axis board, while later assemblies such as IS200AEPAH1ACB may have different hardware configurations. The revision and complete assembly number should therefore be matched before replacement.
📦 Ordering Information
GE IS200AEPAH1A | Mark VIe | AEPA Alternative Energy Pitch Axis PCB | Wind Turbine Control Board | GE Speedtronic
