Lenze DSD - Manual (Page 89)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
89
7 Applications
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 ⋅ + =