8520-AA21

The Allen-Bradley 8520-AA21 is a digital servo amplifier; this unit is in charge of sending the proper power to the servomotor. It belongs to the family of the Allen-Bradley 9/series digital drives. The Allen-Bradley 8520-AA21 digital servo amplifier is designed on stainless steel and has a Teflon shaft seal which allows it to be exposed to dull and hazard environments. This amplifier does only have a single axis; although this servo amplifier is a mono-axis unit, it does offer a relatively high amperage of 21 Amps. Extra boards and sensors can be added to all the servo amplifiers of the 9/series servo motors. The functioning of this servo amplifier is simple; it receives and converts feedback from the main digital drive, allowing it to send the required amount of power to the servomotor.

The focus of this Allen Bradley digital servo amplifier is on delivering the appropriate amount of power to the servo motor, as well as ensuring that the motor functions smoothly and efficiently with the power source it is operating on. The Allen-Bradley 8520-AA21 digital servo amplifier can be used with one of the digital 9/230 systems and with any other servo motor, as long as the two units are compatible both physically and in their specifications. The approximate shipping weight of this servo amplifier is 50 pounds. It is recommended that Allen-Bradley experts are called in to complete the installation of this unit, in order to ensure a proper functioning. Digital servo amplifiers are one of the main and more important items that can be applied to a servo motor.