Siemens SINAMICS S120 - Page 13

Contents
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
13
7.5 Sine-wave filter ..................................................................................................................... 324
7.6 Motor reactors ....................................................................................................................... 326
7.7 dv/dt filter plus Voltage Peak Limiter .................................................................................... 328
7.8 dv/dt filter compact plus Voltage Peak Limiter ...................................................................... 330
7.9 Pulse frequency wobbling ..................................................................................................... 332
7.10 Direction reversal without changing the setpoint .................................................................. 333
7.11 Automatic restart ................................................................................................................... 335
7.12 Armature short-circuit, DC braking ....................................................................................... 339
7.12.1 Armature short-circuit braking for permanent-magnet synchronous motors ........................ 340
7.12.1.1 Internal armature short-circuit braking .................................................................................. 340
7.12.1.2 External armature short-circuit braking ................................................................................. 341
7.12.2 DC braking ............................................................................................................................ 344
7.12.2.1 Activation via parameters ..................................................................................................... 344
7.12.2.2 Activation via fault response ................................................................................................. 345
7.12.2.3 Activation via OFF fault responses ....................................................................................... 346
7.12.2.4 Activation via a speed threshold ........................................................................................... 346
7.12.3 Internal voltage protection .................................................................................................... 347
7.12.4 Configuring the fault response .............................................................................................. 348
7.12.5 Function diagrams and parameters ...................................................................................... 348
7.13 Motor Module as a Braking Module ...................................................................................... 350
7.13.1 Features ................................................................................................................................ 350
7.13.2 Configuring resistors ............................................................................................................. 351
7.13.3 Activating the "Braking Module" function .............................................................................. 354
7.13.4 Protective equipment ............................................................................................................ 356
7.13.5 Overview of the important parameters .................................................................................. 357
7.14 OFF3 torque limits ................................................................................................................ 358
7.15 Technology function friction characteristic ............................................................................ 359
7.16 Simple brake control ............................................................................................................. 361
7.17 Runtime (operating hours counter) ....................................................................................... 364
7.18 Energy-saving display ........................................................................................................... 366
7.19 Encoder diagnostics.............................................................................................................. 369
7.19.1 Datalogger ............................................................................................................................ 369
7.19.2 Encoder dirty signal .............................................................................................................. 370
7.20 Tolerant encoder monitoring ................................................................................................. 371
7.20.1 Encoder track monitoring ...................................................................................................... 372
7.20.2 Zero mark tolerance .............................................................................................................. 373
7.20.3 Freezing the speed raw value ............................................................................................... 374
7.20.4 Adjustable hardware filter ..................................................................................................... 374
7.20.5 Edge evaluation of the zero mark ......................................................................................... 375
7.20.6 Pole position adaptation ....................................................................................................... 376
7.20.7 Pulse number correction for faults ........................................................................................ 377
7.20.8 "Tolerance band pulse number" monitoring .......................................................................... 378
7.20.9 Signal edge evaluation (1x, 4x) ............................................................................................ 379
7.20.10 Setting the measuring time to evaluate speed "0" ................................................................ 380
7.20.11 Sliding averaging of the speed actual value ......................................................................... 380