Lenze DSD - Manual (Page 147)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
147
7 Applications
7.12 Belt conveyors for unit loads
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7.12.2.3 Mass of supporting rollers
7.12.2.4 Moment of inertia of rollers
7.12.2.5 Additional force
Symbol Description
m
aux
Total mass of supporting rolls
• If μ
aux
= 0, the friction by the supporting rolls is disregarded, a value for the mass then does
not have to be entered.
• Value can be entered directly or calculated using the mass calculator.
Mass calculator ( 405)

Note!
The mass of the supporting rolls is used for calculating the friction forces.
Symbol Description
J
sum
Moment of inertia of the drive roll and all supporting rolls.
• Has an impact on the dynamic torque!
• Value can be entered directly or calculated using the inertial calculator.
Inertial calculator ( 407)

Note!
When calculating the mass inertia, bear in mind that the supporting rolls and the drive
roll can have different diameters!
Symbol Description
F
add
The additional force results from backing forces, lateral friction, deflectors, etc.
• The backing force can be calculated using the auxiliary calculator.
"Backing force (material handling technology)" calculator ( 418)