Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 156)

Servo Parameters
Chapter 7
7-10
Figure 7.5
Drive and Feedback Connections for a Two--axis Machine, Spindle with
No Feedback, and Second Feedback for Axis 2
NUMBER OF MOTORS ON 1ST BOARD = Three
Spindle
drive
Spindle
motor
Velocity Feedback
Device
Drive Signal
(Spindle)
Drive Signal
(Axis 2)
Drive Signal
(Axis 1)
Servo
Amplifier
(Axis 2)
Servo
Amplifier
(Axis 1)
Velocity
Feedback
Servomotor
(Axis 1)
Servomotor
(Axis 2)
(Axis 3)
Term Panel
(Axis 2)
Term Panel
(Axis 1)
Term Panel
Velocity feedback
NUMBER OF MOTORS ON 2ND BOARD = None
J2
J3
TB2
Analog Servo Module
A quad B
Position feedback (1)
J1
Position feedback
(axis 2)
Encoder Power (1)
Velocity
Feedback
Amplifier Output
J4
In systems using two servo modules, the user must enter the Number of
Motors on 1st Board and Number of Motors on 2nd Board according to
the number of motors connected on each board.
Important: In systems that use three servo modules, the control subtracts
the number of motors entered in the parameters Number of Motors on 1st
Board and Number of Motors on 2nd Board from the total number of
motors (axes) that you have configured. The control assumes that the
remaining number of motors (axes) are on the third servo module.
Important: When configuring axes, any motor using the connector
TB2/TB3 or DAC out (typically the spindle) must be configured as the
last axis on each servo module. Refer to chapter 3 for more information.
A spindle is always counted as a motor on the servo board regardless of
whether that spindle is run with position feedback.