Lenze EVS93xx CrossCutter - Manual (Page 275)

Cross Cutter
Appendix
Prepared Solution Servo PLC / ECSxA 1.1 EN 6-107
The following structure will be used to provide a practical illustration of the application of the
Tp_Register function block:
Upstream of a printing unit, print marks are detected via a sensor mounted ∆l = 1230 mm
upstream of the printing unit. The web is moving forwards at approx. 60 m/min. The feed motion
is detected via an incremental encoder driven via a belt ratio i
master
= 5 : 2 by one of the feed
rolls (diameter Ø
master
= 100 mm).
The required shifting of the print-mark signals by the offset distance of ∆l = 1230 mm can be
achieved using the Tp_Register function block in the following connection:
The incremental value for the offset distance (input signal dnOffset_p) is calculated using the
following formula:
... 269 , 641468
] / [ 100
] [ 1230
2
5
] / . [ 65536
] / . [ 65536 _
=
⋅
⋅ ⋅ =
=
Δ
⋅ ⋅ =
rev mm
mm
rev incr
m
l
i rev incr p dnOffset
Master
Master
π
∆l = 1230 mm
i
master
= 5 : 2
m
master
= π
.
100 mm