Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 635)

Section
13A
13A-1
Connecting 8520 Digital Drive Systems
This section details the connections for the 8520-AX-D digital drive.
For Information: See Page:
8520 Digital Servo Amplifiers Option
Specifications
13A-2
Selecting a Three Phase Transformer 13A-11
8520 Digital Servo Amplifiers Fault Indicators 13A-14
8520 Digital Servo Amplifiers Jumper Settings 13A-16
8520 Digital Servo Amplifiers Shunt
Specifications
13A-19
8500 Digital Servo Motors 13A-24
Feedback Devices 13A-28
The 8520 Digital Servo Amplifier receives low-level Pulse Width
Modulated (PWM) command signals from the servo module and translates
them to drive the axis servo motors. At the same time, it constantly senses
the amount of current being used by each motor and returns this
information to the 8520 digital servo module for use in determining motor
load.
The 8520 digital servo amplifier also receives an “Axis enable” signal
from the servo module and returns a “Drive OK” signal if certain
protection and motor tests are successful.
Important: The 8520 digital servo amplifier should be separated or
isolated from the servo module and CPU boards because of the electrical
noise it generates. Refer to page 2A-10 for unit mounting spacing and
other noise prevention techniques that will have to be followed when
installing this unit.
Figure 13A.1 shows the interface between the 8520 digital servo module
and the servo amplifier.
13A.0
Section Overview
13A.1
8520 Digital Servo
Amplifiers