User`s manual

8-14 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual – January 2001 GFK-1742A
8
The diagram below illustrates two DSM314 digital axes connected in parallel with Commanded
Position from Axis 1 driving servo loops for Axis 1 and Axis 2. This will allow both axes to run
from the same commanded path. Note that Axis 1 is configured with
Follower Control Loop
=
Disabled. This configuration does not allow for load sharing between axes that are tightly
coupled. The reader should note that with this configuration the Local Logic function
can
be run.
This is because the command generator for axis #4 is not required for this configuration.
Position
Loop
Servo
Amp
M
1
Encoder
Servo
Motor
Axis#1
Feed Forward
Commanded
Position
Axis #1
Axis #1 (Follower Control Loop = Disabled)
Ratio
A/B
Position
Loop
M
2
Motion
Program
Jog/
Move at
Velocity
Encoder
Slave
Motor
Axis#2
Feed Forward
Enable
Follower
Axis #2
Slave Axis #2 (Follower Control Loop = Enabled)
Velocity and
Torque Loop
Servo
Amp
Velocity and
Torque Loop
Path Generator Axis #1
Master
Source
Axis #2
Figure 8-13. 2-Axis Digital Follower / Parallel Structure / Source = Commanded Position 1