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Chapter 6. Function Description (CON)
6.5.6 Draw Control
Draw control is a sort of Open Loop tension control. Draw is the ratio of speed difference between one roll and the
other. Tension is generated as in the following equation.
Where,
V1, V2: Transfer speed of each roll (m/min)
T: Tension (kg)
E: Elasticity coefficient of processed material (kg/mm2)
S: Sectional area of processed material (mm2)
D
S
E
V
V
V
S
E
T
´
´
=
-
´
´
=
2
2
1
Line Speed Setting
IM
INVERTER 2
IM
INVERTER 1
V
2
Draw Setting
V1