Lenze DSD - Manual (Page 146)

7 Applications
7.12 Belt conveyors for unit loads
146
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.12.1.1 Symbols used
7.12.2 Data for the entry
7.12.2.1 Diameter of the drive roll
7.12.2.2 Mass of the belt
Symbol Description Dimension unit
d Diameter of the drive roll mm
F
μ
Friction force N
F
g
Lifting force N
F
add
Additional force (e. g. backing force) N
F
aux
Friction force by supporting rolls N
g Gravitational acceleration (g = 9.81 m/s 2 ) m/s 2
J Moment of inertia of driving roller kgm 2
J
aux
Moment of inertia of supporting rollers kgm 2
J
sum
Total moment of inertia kgm 2
l Conveying length m
m
L
Mass of the payload kg
m’
L
Mass of the line load kg/m
m
Blt
Mass of the belt kg
m
aux
Total mass of the supporting rolls kg
m
add
Additional mass (e. g. by deflectors) kg
M
App
Required torque of the application Nm
M
sds
Stationary torque Nm
v Material speed m/s
α Angular acceleration rad/s 2
β Angle of tilt °
μ
Gdn
Coefficient of friction of belt/supporting surface
μ
aux
Coefficient of friction belt/supporting rollers
μ
L
Coefficient of friction of load/belt
Symbol Description
d Outside diameter of drive roll
Symbol Description
m
Blt
Mass of belt
• Value can be entered directly or calculated by the uniform load and conveying length.
"Uniform load mass (material handling technology)" calculator ( 415)