GE IS215WEPAH2B

Product Overview

The IS215WEPAH2B is a dedicated Wind Energy Pitch Axis (WEPA) controller board designed by GE for the Mark VIe Speedtronic series, serving as the core control unit for wind turbine pitch systems. It integrates a modular assembly with the AEPAH1B base board and BPPB daughterboard, providing comprehensive I/O interfaces and communication capabilities for precise pitch angle regulation. The board features conformal coating for protection against harsh environmental conditions, supports simplex or triple redundancy configurations, and operates with software frame rates of 10, 20, and 40 ms for real-time control. It enables seamless integration with wind turbine supervisory control systems, ensuring optimal energy capture, rotor speed regulation, and structural load management through deterministic pitch control algorithms. The IS215WEPAH2B is a critical component for enhancing wind turbine efficiency, reliability, and safety in utility-scale wind power applications.

Category: GE

Description

Technical Specifications

Parameter	Details
Model Number	IS215WEPAH2B
Manufacturer	General Electric (GE Energy)
Module Type	Wind Energy Pitch Axis (WEPA) Controller Board
Series Compatibility	Mark VIe Speedtronic Wind Turbine Control Systems
Functional Revision	B
Form Factor	Modular PCB Assembly (AEPAH1B Base + BPPB Daughterboard)
Power Supply	125 VDC
Power Consumption	20 W (typical)
PCB Coating	Conformal Coating (moisture/dust/chemical protection)
Operating Temperature	-30°C to +65°C
Storage Temperature	-40°C to +70°C
Relative Humidity	10–95% (non-condensing)
Shock (Non-Operating)	10G
Dimensions (H×W×D)	12.7 cm × 12.7 cm × 13.2 cm
Weight	0.4 kg
Software Frame Rates	10, 20, and 40 ms
I/O Isolation	2500 VAC input-to-output isolation
Certifications	CE, UL 508, IEC 61010, IEC 61400-25
Manual Reference	GEP-9145

I/O Interfaces

I/O Type	Quantity	Details
Analog Inputs	9	8 general-purpose, 1 dedicated incremental encoder input
Discrete Inputs	20	24 VDC, sinking/sourcing
Discrete Outputs	2	24 VDC, 2 A per channel
Relay Outputs	9	250 VAC/30 VDC, 5 A per channel
Communication Interfaces	3 COM Ports (COM1, COM2, micro 9-pin D‑socket), 2 RS‑485, 1 10BaseT/AUI Ethernet	Supports MODBUS RTU/TCP, IEC 60870-5-104
PWM Outputs	2	0–10 VDC, 1 A for pitch actuator control

Function Features

Wind Turbine Pitch Control: Executes Mark VIe pitch control algorithms for rotor speed regulation, power optimization, and structural load mitigation with deterministic performance.
Modular I/O Processing: Integrates 9 analog inputs (including encoder), 20 discrete inputs, 2 discrete outputs, 9 relay outputs, and 2 PWM outputs for comprehensive pitch system monitoring and actuation.
Dual RS‑485 Communication: Supports real-time data exchange with wind turbine SCADA systems, pitch actuators, and condition monitoring devices for centralized control and diagnostics.
Conformal Coating: Protects against moisture, dust, and salt spray in onshore and offshore wind turbine environments.
Redundancy Support: Configurable for simplex or triple redundancy applications to maximize system availability and reliability.
Deterministic Frame Rates: Operates at 10, 20, or 40 ms software frame rates for precise pitch angle adjustments and real-time control.
Encoder Feedback Processing: Dedicated incremental encoder input for accurate rotor speed and pitch angle measurement, enabling closed-loop control.
Relay Output Control: 9 relay outputs for auxiliary functions such as pitch system emergency shutdown, brake control, and status indication.
PWM Actuator Control: 2 PWM outputs for precise pitch actuator positioning, ensuring smooth and efficient energy capture.
Diagnostic Monitoring: Compatible with GE ToolboxST software for remote diagnostics, firmware updates, and pitch system performance verification.

Application Scenarios

Utility‑Scale Wind Turbines: Serves as the primary pitch controller for GE Mark VIe‑based wind turbines, managing pitch angle adjustments to optimize energy capture and reduce structural loads.
Offshore Wind Farms: Operates reliably in harsh marine environments with conformal coating protection against salt spray, moisture, and temperature fluctuations.
Wind Turbine Retrofits: Direct replacement for legacy pitch controller boards in Mark VIe system upgrades, enhancing processing power and control capabilities.
Pitch System Redundancy: Configured for triple redundancy in critical wind turbine applications to ensure continuous operation and fault tolerance.
Wind Farm Automation: Interfaces with wind farm SCADA systems for centralized monitoring and control of multiple turbine units, enabling efficient load distribution and grid integration.
Structural Load Management: Executes advanced pitch control algorithms to mitigate rotor and tower loads during high wind speeds, extending turbine lifespan.

Compatibility and Integration

Mark VIe Ecosystem: Fully compatible with Mark VIe controllers, I/O modules, and communication boards for seamless wind turbine control system integration.
Software Support: Configurable and monitorable via GE ToolboxST software for pitch control logic programming, I/O configuration, and diagnostic analysis.
Pitch Actuator Compatibility: Interfaces with hydraulic and electric pitch actuators via PWM outputs and RS‑485 communication for precise positioning control.
SCADA Integration: Supports MODBUS RTU/TCP and IEC 60870-5-104 protocols for real-time data exchange with wind farm SCADA systems.
Documentation: Detailed guidelines available in the GE Mark VIe WEPA Controller Application Guide (GEP-9145) and Wind Turbine Pitch System Manual.

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