Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 200)

Section 4C
Connecting the 4-axis Servo Module
4C-2
Important: In order to use the solid tapping feature that is available on the
9/260 and 9/290 CNC, you must use the Allen-Bradley 8510 AC spindle
drive system.
Position and velocity data are read from a feedback device that is mounted on
the servo motor. This feedback device generates differential signals that are
then fed to the servo module. If the spindle motor uses an encoder, it will
supply spindle position feedback to the digital servo module.
Figure 4C.1 and Figure 4C.2 show typical servo drive configurations for a
mill and a lathe. Refer to your AMP reference manual for specific details
on configuring axes, axis positioning loops, and axis port selection.
Figure 4C.1
Typical Digital Servo Drive Configuration for a Mill
Servo Module
(configured for
three axes and
one open loop
spindle)
9/260 or 9/290
Cabinet or enclosure
Spindle
drive
Spindle
motor
Servomotor
(Axis 1)
Servomotor
(Axis 2)
Servomotor
(Axis 3)
Position feedback
Servo
Amplifier
Velocity feedback
Feedback
device
Feedback device
(3 Axis
amplifier)
Analog signal
Servo drive signal (Axis 1)
Current feedback (Axis 1)
Servo drive signal (Axis 2)
Current feedback (Axis 2)
Servo drive signal (Axis 3)
Current feedback (Axis 3)
Digital
11274-I