A20B-2102-0081 Fanuc Alpha i Series Servo Drive Control Board

Description

Fanuc A20B-2102-0081 is a high-precision Alpha i series servo amplifier control PCB measuring approximately 170 mm x 120 mm and designed for 400 V power architectures. The unit features a multi-layer FR-4 substrate construction with integrated surface-mount technology (SMT) components and high-density multi-pin header interfaces for signal distribution. It incorporates dedicated logic circuitry for PWM signal processing and feedback loop management within the servo drive assembly. The mechanical frame utilizes flame-retardant polycarbonate materials to ensure structural integrity during high-vibration operation.

A20B-2102-0081 Specifications
Model: A20B-2102-0081
Brand: Fanuc
Series: Alpha i (αi) / Beta i (βi)
Product Type: Servo Drive Control Side Plate
Compatible Amplifiers: βiSV10HV-B, βiSV20HV-B, Alpha i SVM
Input Voltage: 400 V AC
Logic Voltage: 5 V DC / 24 V DC
Dimensions: 170 mm x 120 mm x 25 mm
Weight: 0.22 kg
Material: FR-4 Glass Epoxy PCB / Polycarbonate Frame
Interface Type: Multi-pin Connector / Ribbon Cable Header
Operating Temperature: 0 to 55 °C
Storage Temperature: -20 to 75 °C
Humidity: 10 to 90 % RH
Mounting Type: Side-mount Snap-in
Certifications: CE, UL, RoHS Compliant

A20B-2102-0081 Applications
Primary applications include integration into Fanuc Alpha i and Beta i series servo amplifiers used within CNC machining centers, robotic arm controllers, and automated industrial lathes. Deployed within multi-axis motion control systems to manage high-speed positioning and torque regulation in precision manufacturing equipment.