User`s manual

Follower Motion
GFK-1742A Chapter 8 Follower Motion 8-9
8
master command velocity and the makeup move velocity reach 100% of the velocity limit. The
master command velocity will not exceed 100% of the
Velocity Limit
value. Accumulated counts
may be lost and the makeup move will not complete.
The
Follower Ramp Active
%I bit indication is turned on while the ramp control is in effect for
both the ramp up/make-up and ramp down.
The
Follower Enabled
and
Follower Ramp Active
%I bits can be monitored by the PLC to
determine which part of the follower ramp up/ramp down cycle is active. The following figure
shows the state of
Follower Enabled
and
Follower Ramp Active
during a follower cycle.
0
T
ime
Velocity
M
ake- up time
M
ake- up distance
Follower
Disabled
F
ollower
E
nabled
F
ollower
R
amp Active
Figure 8-7. Follower Ramp Up/Ramp Down Cycle (Case 2)