Lenze DSD User Manual Page 468
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18 Drive dimensioning messages
18.8 Inverters
468
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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18.8.10 Control mode VFCplus without feedback is not permissible
18.8.11 The SLVC control mode is not permissible for inverters >55 kW
18.8.12 Too low braking torques at low speed
18.8.13 Motor limit rating is exceeded
Warning!
For the hoist drive, the Servo Drive 9400 combination greater than 55 kW is not permissible with the VFC-
PLUS control type without feedback.
Cause Effects Possible remedies
The control mode is not suitable for
hoist drives.
The drive must not be operated in
this control mode.
Select a control mode with feedback.
Warning!
The SLVC control mode is not permissible for inverters with a rating of more than 55 kW.
Cause Effects Possible remedies
The SLVC control mode must not be
used for inverters in this power
range.
The drive must not be operated in
this control mode. The control is not
stable!
Select a control mode with feedback.
Note!
The drive system only develops small amounts of braking torque at low speeds in SLVC operating mode.
Use alternative braking methods such as DC-injection braking or mechanical brakes.
Cause Effects Possible remedies
The drive system only develops small
amounts of braking torque at low
speeds in the SLVC control mode.
At low speeds with operation in gen-
erator mode, the motor cannot be
controlled.
• Select a control mode with feed-
back.
• In this control mode, do not oper-
ate the drive permanently at low
speeds .
• Do not use the control mode with
hoist drives.
Warning!
The rated motor power is xxx kW. In the "V/f control" mode, the max. motor limit rating of yyy kW is ex-
ceeded. The selected drive system cannot ensure a safe hoist operation.
Cause Effects Possible remedies
The rated motor power is too high for
a hoist drive with V/f characteristic
control.
At low speeds, the motor is magnet-
ised as required. Overheating and
torque losses are the result. In this
control mode, a safe operation is not
possible.
Select a control mode with feedback.
- 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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