Installation guide

210 Following for MX2000 version 4.0
8.1.8 - Cut to length Example
The cutting cycle requires that the material and
cutter be in synchronization when the material is
being cut and that the cutter be returned to the next
cutting position.
Example: The material is to be cut in 11 units
lengths. The cutting portion of the cycle will take 1
second and the material is moving at 1 unit/second.
The FOLRATIO is assumed to be 1.0.
This cutting cycle is accomplished by using the
FOLOFFSET command. The FOLOFFSET cycle
consists of a synchronization section
(FOLSYNCDIST) and offset travel section
(FOLOFFSET and FOLOFFSETDIST). The
FOLSYNCDIST command is used to define the
material cutting distance and the FOLOFFSET,
FOLOFFSETDIST for defining the next cutting
position.
The cut length is the summation of the
FOLSYNCDIST and the FOLOFFSETDIST
distances. This is the incremental distance traveled
by the master during the cycle.
The FOLOFFSET distance is the negation of the cut
length. This is the recede distance traveled by the
follower during the offset cycle.
Cut to length Cycle
Fig 1. Shows the Velocity Profile for this Fig 2. Shows the Positional Profile for this
application application.
Ave Vel = -(11/10) + 1 = -.1 (-10%)
Peak Vel = (-.1 * 2) – 1 = -1.2 (-120%)
Max + direction distance traveled =
(.5 * (1/(1 + .1)) * (10/4)) + 1 = +2.136 units
Max – direction distance traveled =
- (.5 * (1/(1 + .1)) * (10/4)) = -1.136 units
Notes:
1) The cutting position is considered the 0
position on the Positional Profile.
2) The longest cut length creates the maximum
distance excursion around the cutting position.
3) The shortest cut length creates the highest
Peak Velocity.
Ave Vel
max + direction
distance
max - direction
distance
FOLOFFSETDIST/4
FOLOFFSET start FOLOFFSET end
Peak Vel
FOLMINRATIO
Cut Length
Ave Vel = - (cut length / FOLOFFSETDIST) + 1
Peak Vel = (Ave Vel * 2) - 1
max + direction distance = (.5*(1/(1+abs(Ave Vel))*(FOLOFFSETDIST/4))+FOLSYNCDIST
max - direction distance = - (.5 * (1/(1+abs(Ave Vel)) * (FOLOFFSETDIST/4))
FOLSYNCDIST
Master
Velocity
100%
0%
Master
Follower
Distance
Time
0-2 -1 1 2 3 4 5 6 7 8 9 10 11
FOLSYNCDIST=1
FOLOFFSETDIST=10
FOLOFFSET= -11
FOLRATIO=0
0 Velocity
0 Velocity
FOLOFFSET
START
FOLOFFSET
End
FOLOFFSETDIST
END
FOLSYNCDIST