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7Applications
7.15 Synchronous drive of squeegees
164
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Moment of inertia
The total moment of inertia consists of the moments of inertia of the individual components:
[7-157] Equation 5: Total moment of inertia
Torque of the application
[7-158] Equation 6: Torque of the application
Tip!
Further equations to complete the calculations required for an application can be found in
the chapter "Basic calculations
". ( 68)
7.15.1.1 Symbols used
J
sum
JJ
aux
J
L
++=
M
App
M
sds
M
μ
J
sum
α⋅++=
Symbol Description Dimension unit
d Diameter of roll 1 (drive roll) mm
F
in
Tension on input side (only positive tensile forces possible) N
F
out
Tension on output side (only positive tensile forces possible) N
F Contact pressure N
F
W2
Force due to weight of roll 2 N
F
add
Additionally acting force on roll 2 N
m
W2
Mass of roll 2 N
g Gravitational constant 9.81 m/s
2
s Safety factor - static friction %
f
1
Lever arm of the rolling friction - roll 1
f
2
Lever arm of the rolling friction - roll 2
J Moment of inertia of the lower roll (drive roll) kgm
2
J
aux
Moment of inertia of the upper roll kgm
2
J
L
Moment of inertia of the effective mass of the material to be conveyed kgm
2
J
sum
Total moment of inertia kgm
2
S Safety coefficient for the static friction %
M
App
Required torque of the application Nm
M
μ
Friction torque Nm
M
sds
Stationary torque Nm
v Speed of the web m/min
α Angular acceleration rad/s
2
β Vertical mounting position (angle of tilt) of the roll pair W
1
, W
2
, with regard
to the vertical
°
η
Brg
Mechanical efficiency of the roll bearing W
1
, W
2
μ
0
Coefficient of friction of the roll surface
- Drive Solution 1
- Designer 1
- Contents 10
- 1 Notes on usage 11
- 2 About this documentation 14
- Pictograph and signal word! 17
- 3User interface 18
- How to sort the results: 35
- How to filter results: 35
- How to open created notes: 38
- How to delete notes: 38
- 4.3.1 Messages 44
- 4.3.2 Software updates 45
- 4.4 Language 46
- 4.5 Settings 46
- 4.5.3 "Help" tab 47
- 4.5.5 "Units" tab 48
- User data 50
- Registration data: 50
- 4.6 User-specific settings 51
- 4.6.1 User-defined defaults 51
- 5Managing projects 52
- 6 Drive dimensioning tools 55
- 7Applications 100
- Mass calculator ( 405) 109
- Danger! 122
- Pole pair 191
- 8 Motion design 224
- symbol in the toolbar 225
- CINH = 1 271
- 9 Mains and environment 277
- ( 283) 282
- ( 285) 282
- ( 286) 282
- 10.1 Mechanical drive axis 283
- 10.1.1 Lenze gearbox 283
- 10.1.3 Feedback 284
- 10.2 Electrical drive axis 285
- 10.3 Drive concept 286
- 10.3.1 Gearbox features 287
- 10.3.1.1 Axial gearbox 287
- 10.3.1.2 Right-angle gearbox 288
- 10.3.2 Motor properties 289
- 10.3.4 Inverter properties 294
- 10.3.4.1 Frequency inverter 294
- 10.3.4.2 Servo inverters 296
- 11 Drive Dimensioning 308
- 12 Components in the DC bus 361
- 13 Details on Lenze products 377
- 14 Energy efficiency 378
- 15.1 Drawing 386
- Editing functions 389
- 15.2 Results 390
- 15.3 Protocols 391
- 15.3.1 Summarised protocol 391
- 15.3.2 Detailed protocol 391
- 15.3.3 Commissioning data 392
- 15.3.5 Output settings 393
- 15.4.1 Application Tuner 394
- 15.4.3 BlueGreen 394
- ( 378) 395
- 15.6.1 Dynamic reserves 396
- 15.6.2 Stationary reserves 396
- 15.6.3 Speed reserves 397
- 15.6.7 Reserves for gearboxes 399
- 16 Auxiliary means 401
- How to call the calculator: 404
- How to call the DSC: 425
- 17.1 Field weakening 426
- 17.5 Feedback systems 427
- Measured values 430
- 17.16 System disturbances 435
- [17-6] Group drives 436
- 17.19 ATEX for gearbox 437
- 17.21 Emergency-off scenarios 438
- 18.1 Applications 441
- 18.2 Drive system 445
- 18.3 Additional drive element 449
- 18.4 Lenze gearbox 450
- 18.5 Lenze motor 455
- 18.5.6 Motor speed too low 456
- > as winding ratio q 460
- 18.6 Brake 461
- 18.6.3 No brake available 461
- 18.7 Feedback 463
- 18.7.2 No feedback selected 463
- 18.8 Inverters 465
- 18.8.16 Activate VVC control 469
- 18.8.19 Mains choke required 470
- 18.10 Supply module 476
- 18.11 Brake chopper 479
- 18.12 Brake resistor 481
- 18.13 User motor 483
- ( 42) 485
- ( 46) 485
- 20 Glossary 486
- )(('%$& 494
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