81001-451-83-R GU-D15 80173 -110-02 Allen Bradley Communication Module

Function

Power Switching and Control: This component, often referred to as a Gate Commutation Unit (GCU) or a board containing Symmetrical Gate Commutated Thyristors (SGCTs), is responsible for the core power conversion function of the variable frequency drive. 

PWM (Pulse Width Modulation) Generation: It plays a vital role in generating the complex Pulse Width Modulation (PWM) waveforms that the drive sends to the motor. 

Key Feature

High-Power Switching: Serves as a critical component for switching high-voltage and high-current power within PowerFlex 700/7000 drives.

Motor Control Enabling: Directly contributes to the drive's ability to provide variable frequency and voltage output for precise AC motor speed and torque control.

Gate Commutation Unit (GCU): Functions as part of or the entire unit responsible for precisely triggering and controlling the SGCTs.

Description

The Allen-Bradley 81001-451-83-R, often found in conjunction with part numbers like GU-D15 80173-110-02, is a highly specialized power electronics control unit or board designed specifically for the Allen-Bradley PowerFlex 700 and PowerFlex 7000 series Medium Voltage AC Drives. It is not a standalone communication module for industrial networks like EtherNet/IP or ControlNet. Instead, its core function is to handle the high-power switching necessary for variable frequency drive operation.