Lenze DSD - Manual (Page 202)

7 Applications
7.22 Winding drive for rewinder/unwinder
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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.22.1.2 Symbols used
Symbol Description Dimension unit
a Translatory acceleration m/s 2
b
max
Max. width of the winding material mm
d Diameter characteristic mm
d
dim
Dimensioning diameter
• Diameter which is reached after termination of the acceleration phase.
mm
d
min
Minimum reel diameter (initial diameter) mm
d
max
Maximum reel diameter mm
F
min
(d
min
) Min. tensile force with min. reel diameter (initial diameter) N
F
max
(d
min
) Max. tensile force with min. reel diameter N
F
max
(d
max
) Max. tensile force with max. reel diameter N
HW Winding characteristic (hard/soft)
• describes the tensile force drop as a function of the reel diameter
k
f
Field weakening factor
k
f
Tensile force setting range
k
M
Torque setting range
l Length of the winding material m
M
sds
Stationary torque Nm
m
sum
Total torque Nm
n
max
Max. motor speed rpm
n
rated
Rated speed of the motor rpm
ρ Average density of winding material kg/dm 2
P
App
Required process power
P
M
Required motor output kW
q Winding ratio
q
max
Maximum winding ratio
q
dim
Dimensioning winding ratio
s
min
Thickness of the winding material
• If multiple materials are wound, the smallest material thickness must be
indicated.
mm
t
acc
Acceleration time of the winding drive m/s
t
dec
Deceleration time of the winding drive m/s
v
max
Max. material speed m/min
α Angular acceleration rad/s 2
η Mechanical efficiency of the winding system (coil and coil intake)
ω Angular velocity rad/s