Lenze DSD Uživatelský manuál stáhnout pdf (Strana 160)

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7Applications

7.14 Synchronous drive - single roll

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

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7.14.2.6 Static friction coefficient of roll surface

7.14.2.7 Angle of wrap

Symbol Description

Static friction coefficient

• The power transmission between the roll and the web is effected by friction. The coefficient

of static friction specifies how great the force to be transmitted can be in proportion to the

normal force on the roll.

• Value can be entered directly or selected from the "Physical coefficients" table.

Static friction

Possible messages

Ratio of the tensile forces F

/ F

out

> limit value ( 441)

Ratio of the tensile forces F

out

/ F

> limit value ( 441)

Symbol Description

α Angle of wrap

• The power transmission between the drive roll and the web is effected by friction.

• The greater the angle of wrap, the greater the normal force on the drive roll, and thus the

force to be transmitted on the web.

Possible messages

Ratio of the tensile forces F

/ F

out

> limit value ( 441)

Ratio of the tensile forces F

out

/ F

> limit value ( 441)

1 2 ... 155 156 157 158 159 160 161 162 163 164 165 ... 495 496

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