80190-440-03-R Allen-Bradley

80190-440-03-R Allen-Bradley Power Board

Brand：Allen-Bradley Model number：80190-440-03-R

Country of origin: United States Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

An Allen-Bradley Power Board is an internal hardware component designed to manage and distribute electrical energy within industrial automation hardware, most notably Variable Frequency Drives (VFDs). In the context of a PowerFlex drive, the Power Board serves as the interface between the Main Control Board and the power modules (IGBTs). It is responsible for converting the incoming line voltage into the appropriate DC bus levels and generating the gate signals required to drive the motor. These boards often integrate current sensing, voltage monitoring, and gate drive circuits into a single assembly to ensure synchronized operation of the power stage.

Product Parameters

The specific parameters of an Allen-Bradley Power Board vary significantly based on the frame size and voltage rating of the host equipment, but they generally conform to the following specifications:

Input Voltage Compatibility: Typically ranges from 200V AC to 690V AC depending on the specific drive series.
Output Gate Drive Voltage: Usually optimized for high-speed switching of IGBT (Insulated Gate Bipolar Transistor) modules.
Current Sensing Range: Scaled to match the horsepower or kilowatt rating of the drive, often ranging from few amps to over 1000 amps in larger frame sizes.
Operating Temperature: Designed to function within industrial environments, typically rated up to 50°C (122°F) or 60°C (140°F) with proper derating and cooling.
Isolation Rating: Features high-voltage galvanic isolation (often up to 2500V or higher) to protect the low-voltage control logic from power-side transients.
DC Bus Monitoring: Includes circuitry for monitoring DC bus voltage levels, including overvoltage and undervoltage thresholds.

Product Advantages

Integrated Design: By combining gate driving, sensing, and power distribution on one board, Allen-Bradley reduces the internal wiring complexity, which minimizes electromagnetic interference (EMI) and improves overall system reliability.
High-Precision Monitoring: The boards utilize high-quality transducers and sensors to provide the control processor with real-time data on current and voltage, allowing for extremely accurate motor control and torque regulation.
Protective Features: Most power boards include onboard protection against short circuits, ground faults, and thermal overloads, acting as the first line of defense for expensive power modules.
Plug-and-Play Compatibility: Designed specifically for Allen-Bradley chassis, these boards feature dedicated pin connectors that ensure a secure physical and electrical fit, reducing repair time during maintenance.

Important Considerations and Precautions

Arc Flash and High Voltage Danger: Power boards operate in direct contact with lethal voltages. Only qualified personnel should perform installation or replacement. Always verify that DC bus capacitors have fully discharged (which can take several minutes after power-off) before touching the board.
Electrostatic Discharge (ESD) Sensitivity: These boards contain highly sensitive CMOS components. Always use a grounded ESD wrist strap and follow anti-static procedures during handling to prevent latent circuit damage.
Component Aging: Components like electrolytic capacitors on the power board have a finite lifespan. In aging drives, these capacitors may leak or fail, requiring board replacement to prevent catastrophic failure of the entire drive.
Correct Torque: When reconnecting power leads or bus bars to the board, it is vital to use a calibrated torque wrench to meet the manufacturer's specifications. Loose connections cause localized heating and fire hazards.
Firmware Synchronization: In some advanced drives, replacing a power board may require a firmware update or a recalibration procedure through the HMI or software (like Studio 5000) to ensure the control logic recognizes the new power hardware.

Product Applications

Allen-Bradley Power Boards are primarily utilized in heavy-duty industrial environments where precise motor control is required.

Variable Frequency Drives (VFDs): Central to the PowerFlex 700, 753, and 755 series, managing the power flow to induction and permanent magnet motors.
Servo Drives: Used in Kinetix motion control systems to provide the high-response power needed for precision positioning in packaging and robotics.
Soft Starters: Found in SMC-70 and SMC Flex units to manage the initial current inrush during motor startup.
Large Scale Power Conversion: Applied in industrial rectifiers and power supplies for heavy industries like mining, oil and gas, and wastewater treatment where high-capacity pumping and ventilation are critical.

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