Allen Bradley 81007-465-51-R Voltage Sensing Feedback PCB

Allen Bradley 81007-465-51-R Voltage Feedback Drive Board

Product Overview

The Allen-Bradley 81007-465-51-R (8100746551R) is a specialized voltage feedback and sensing board assembly designed for large-scale industrial drive systems. Functioning as a critical monitoring component, this board is engineered to provide precise voltage level feedback to the drive's main control processor, ensuring stable regulation and overvoltage protection. Although legacy technical descriptions occasionally misidentify this 81007 series component as a mechanical limit switch, it is technically a high-power PC board assembly. Weighing approximately 7.55 lbs, the 81007-465-51-R features robust circuitry capable of handling the high-voltage sensing requirements typical of medium-voltage or high-horsepower motor controllers.

Industrial Application Scenarios

• Drive Voltage Monitoring: Continuous tracking of DC bus or input line voltage levels to ensure the drive operates within safe electrical parameters.

• Overvoltage Protection: Providing fast-response feedback to trigger protective shutdown or regenerative braking logic during voltage spikes.

• Closed-Loop Power Control: Interfacing with the drive's firing logic to maintain constant V/Hz ratios in heavy-duty motor applications.

• Dynamic Braking Systems: Monitoring voltage levels in braking resistors to manage energy dissipation during motor deceleration.

Technical Specifications

The following specifications define the electrical and mechanical parameters of the 81007-465-51-R (8100746551R):