BST ekrPro Com60 - Tear-Off Detection

Operation C 2
ekrPro Com
60
web guide controller EDV-No.: MD.191.01.05/1.6.x Chapter: C 2
with analog sensors Date: 23.11.2007 Page: 15/19
C 2.5 Tear-off detection
“Tear-off detection” enables, dependent on the selected
sensing type (edge / contrast guiding) the following functions:
1. With web edge guiding:
Detection of torn-off sections on the web edge using edge
sensors IR2001/2005, US2007, …
This function is activated during web edge guiding, if during
operation of the web guiding system errors arise from the web
edge that is being scanned.
The function detects both tears into the material web (inward
tear) as well as projecting material (outward tear).
2. With contrast guiding:
Guiding on interrupted printed or contrast edges with contrast
sensors T62D1 or TW54C5.
The operating mode selection
switch on the contrast sensor
T62D1 must be in the position
“Kante“ (edge).
If the function detects a tear, the web guiding system is
automatically blocked. Blocking of the guiding system is lifted
again, if the sensor signal again lies above/below the set threshold
value and the set run-on time has elapsed.
Matching of the individual parameters of the function to the
application is implemented in the menu
Add. Functions > Tear Off Det. or
General Setup > Add. Functions > Tear Off Det..
Tear-off
inwards
Tear-off
outwards
Interrupted printed
or contrast edge
light spot of the
contrast sensor