Lenze DSD - Manual (Page 165)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
165
7 Applications
7.15 Synchronous drive of squeegees
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
7.15.2 Data for the entry
7.15.2.1 Roll diameter
7.15.2.2 Tensile force, infeed
7.15.2.3 Tensile force, outfeed
7.15.2.4 Roll contact force
Symbol Description
d Outside diameter of drive roll
Symbol Description
F
in
The tensile force on the material belt at the input side of the rolls, i.e. where the material ap-
proaches the rolls.
• Only positive values possible.
• The difference in force between the input side and the output side has to be provided by the
drive.
Possible messages
 Difference of the tensile forces F
in
- F
out
> limit value ( 441)
Symbol Description
F
out
The tensile force on the material belt at the output side of the rolls, i.e. where the material
moves away from the rolls.
• Only positive values possible.
• The difference in force between the input side and the output side has to be provided by the
drive.
Possible messages
 Difference of the tensile forces F
in
- F
out
> limit value ( 441)
Symbol Description
F Pinch pressure of rollers
• The power transmission between the drive roll and the web is effected by friction. It depends
on the friction coefficient and the contact pressure of the rolls.
• The force that is applied is created by the weight of the upper roller, by spring pressure, hy-
draulic or pneumatic pressure, or by a combination of these.
Possible messages
 Difference of the tensile forces F
in
- F
out
> limit value ( 441)