Lenze DSD User Manual Page 438
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17 Restrictions of the drive dimensioning
17.20 Applications with low field frequencies
438
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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17.20 Applications with low field frequencies
Low output frequencies are to be expected in particular if the motor is loaded at standstill or at very
low speeds (f
d
<1Hz).
• During longer operation in this range, inverter and motor may be thermally overloaded.
17.21 Emergency-off scenarios
For specific applications, information is required on how fast the drive can be stopped in emergency
situations under defined conditions.
• This calculation currently is not yet integrated in the DSD.
Tip!
Emergency stop scenarios can be calculated with the Application Tuner by changing the
motion profile with the emergency stop times. That way, you can check whether the drive
will still be able to handle the emergency stop scenarios. Application Tuner
( 59)
17.22 Switching in the motor cable
This check has to be carried out manually:
If several motors are operated parallel at the output of an inverter (group drives), and if they are
switched via contactor while a current is applied, further checks have to be carried out.
17.23 Filter in the motor cable
Reasons for the use of filters in the motor cable:
• An increase of the maximally permissible cable length.
• Avoiding the use of shielded motor cables.
• Protection of the motor winding against too high speeds for voltage rises.
The filters have to be dimensioned manually or by means of the DSC.
Note!
Relevant for all inverters, in particular for frequency inverters!
Note!
Only relevant for frequency inverters, for servo inverters the use of filters is not permis-
sible!
- 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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