Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 206)

Section 4C
Connecting the 4-axis Servo Module
4C-8
The Analog/1394 Servo Module is mounted in the component enclosure.
It functions as a high-speed servo processor. The control sends positioning
and velocity data to the servo module, which processes the data to generate
the necessary analog drive signals. These signals are sent to the analog
servo amplifiers, which power the servo motors of the control. Each
analog servo module may control up to four closed loop axes and one open
loop axis (typically used for a spindle).
Figure 4C.6
Analog Servo Module
P1
(CN1)
J1
J2
J3
J2
J3
J4
J1
P3
P2
J4
TB1
TB2
TO
UC
H
PR
O
BE
AN
AL
O
G
O
UT
1 3
2 4
FL
T
The servo module receives position data from the axis feedback devices.
It combines this position feedback data with the interpolated commands
from the control to generate the command signals that it outputs to the
servo amplifiers.
The functions of the analog servo module are designed to make the
servomotors run with optimum performance. The maximum feedrates are
be limited by the mechanical abilities of the machine. System gain and the
maximum allowable following error also limit the feedrates. These limits
are entered as AMP parameters. Refer to your AMP reference manual for
more information.
4C.4
Analog/1394 Servo Module
(8520-SM4)