Lenze DSD Manual do Utilizador Página 89

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 89
7Applications
7.4 Omega belt drive
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
The constant torque loss which occurs within the belt is determined under full load from the torque
at the drive with the efficiency in motor mode of the prestressed belt:
[7-39] Equation 14: Constant torque loss
The torque loss depends on the torque M
D
which is to be transmitted, so that the resulting torque
defining the power of the application is calculated via the following equation.
The deterioration of the efficiency within operation in generator mode (backward efficiency) is
considered during this calculation.
The equation is suitable to calculate different operating points for an application with a prede-
fined motion profile (S1, S2, S3, S6).
[7-40] Equation 15: Required torque of the application
Tip!
Further equations to complete the calculations required for an application can be found in
the chapter "Basic calculations
". ( 68)
M
th,Blt
1
η
Blt
---------
1


max M
D
()=
M
App
M
D
ω
ω
------ -
M
th,Blt
+


J
Cog
α+=
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