Aerotech Introduces Single- and Multi-Axis Servo Drives for Precise Motion Control

The Automation1 XA4 and iXA4 are the first two products in Aerotech's new line of servo drives for precise motion control. These drives allow for single- and dual-axis motion control using pulse width modulation (PWM) and are targeted to those who design machines for automation systems. Ultimately, both the XA4 and iXA4 servo drives aim to speed up the development and deployment of new automation systems found in virtually any industry requiring motion control. 

 

Aerotech’s new line of servo drives for powerful and precise motion control across industries. Image used courtesy of Aerotech

 

Pulse Width Modulation (PWM) for Control

PWM is a method of controlling the output to an actuator, motor, or other physical device. Plenty of devices need a "warm up" or "cool down" period. One way to do this is to run power through a large, adjustable resistor (potentiometer) and turn some of that power to heat. However, this method requires a large potentiometer and is not very efficient. Instead, PWM adjusts the duty cycle of the power going to the device. 

For control purposes, PWM allows for precise motor control, as the duty cycle can be adjusted continuously. Feedback from position sensors can determine how much power, and thus the duty cycle, should be applied to the motor at any given time. For example, the duty cycle can be reduced as a gripper approaches an object, slowing down the motor.

 

Aerotech’s Automation1 XA4 1- and 2-Axis PWM servo drives. Image used courtesy of Aerotech

 

Automation1 XA4 and iXA4 Servo Drives

Aerotech designed the Automation1 XA4 and Automation1 iXA4 servo drives as an economical, compact way for machine builders to control motion along one or two axes. Both drives can control brushless AC, brush DC, voice coil, and stepper motors, handling up to 340 VDC and 20 A peak current. Multiple feedback mechanisms are supported on either model, and onboard memory keeps track of the incoming feedback and responses.

The primary difference between the XA4 and the iXA4 is the need for an industrial PC. The iXA4 can be used without an industrial PC, executing up to nine different user tasks on the embedded control system. The XA4 is accessed through an industrial PC, such as the Automation1 PC. Depending on the motion required and the space constraints of the automation system, designers have their pick as to which one will be the best fit for their application.

 

Aerotech’s Automation1 iXA4 1- or 2-Axis PWM servo drives with motion controller. Image used courtesy of Aerotech

 

Precise Motion Control

Aerotech's two new products represent the first in a new series of servo drives. They can operate on single or dual axes. In the near future, Aerotech intends to add even more drives, including ones that can handle up to four axes, meaning they can move through a volume plus provide rotation. 

Currently, the XA4 servo drive series will see use in automation systems where single- or dual-axis control is required, such as assembly lines, packing operations, and certain quality control tasks.