PCM-22 Software Setup
P/N 400274-01 Revision A7
43
Figure 23
Follower Cycles Screen up to Length Change Increment
The Follower Cycles screen is found by selecting
Drive Setup
,
Define
Motion
then
Follower Cycles
from the PCX menu. In this screen
additional parameters appear when you reach the bottom of the screen
using the down arrow, page down or Enter keys.
All values are in the user units of the amplifier (i.e., inch, millimeters,
etc.) unless noted differently.
Cycle Number
This parameter identifies the
Follower Cycle
currently being defined. Up
to 16 different Follower cycles can be defined (0 to 15).
Follower Cycle Length
The
Follower Cycle Length
(also called the
Follower Length
) is the
distance in user units that the Follower axis moves in order to complete
one cycle of motion.
Follower Length Correction Limit
This parameter only applies if the Follower cycle is defined by sensor.
The
Follower Length Correction Limit
is used to reduce the amount of
Follower Length Variation corrected during each Follower cycle.
When an input is received from the
Zero Follower Cycle
sensor input and
a difference is found to exist between the current average Follower
length and the length determined by the new sensor input, the PCM-22
corrects for a percentage of that difference in the next Follower cycle.
Length Variation = (New Average Length - Current Average Length) * Length Correction Limit
This parameter does not filter the length changes due to sensor inputs. It
only limits the rate at which length errors are corrected for, similar to a
gain. When operating at high line speeds rapid corrections for length
errors may be undesirable especially with high inertial loads. This
parameter would be used to slow the rate of correction of the length
