Siemens SINAMICS S120 Function Manual page 12

Contents
5.13 Motor data identification and rotating measurement............................................................ 249
5.13.1 Overview .............................................................................................................................. 249
5.13.2 Motor data identification ....................................................................................................... 251
5.13.3 Rotating measurement ......................................................................................................... 254
5.13.4 Shortened rotating measurement ........................................................................................ 256
5.13.5 Overview of important parameters ....................................................................................... 257
5.14 Pole position identification ................................................................................................... 258
5.14.1 Operation without an encoder .............................................................................................. 258
5.14.2 Operation with encoder ........................................................................................................ 258
5.14.3 Notes regarding pole position identification ......................................................................... 261
5.14.4 Messages and parameters .................................................................................................. 261
5.15 Efficiency optimization ......................................................................................................... 263
5.15.1 Efficiency optimization for induction motors ......................................................................... 263
5.15.2 Efficiency optimization for reluctance motors ...................................................................... 265
5.15.3 Function diagrams and parameters ..................................................................................... 266
5.16 Fast magnetization for induction motors .............................................................................. 267
5.17 Flying restart ........................................................................................................................ 271
5.17.1 Fast flying restart.................................................................................................................. 273
5.17.2 Flying restart for a synchronous reluctance motor............................................................... 275
5.17.3 Messages and parameters .................................................................................................. 276
5.18 Synchronization.................................................................................................................... 277
5.19 Voltage Sensing Module ...................................................................................................... 279
5.20 Simulation mode .................................................................................................................. 281
5.21 Redundancy mode power units ........................................................................................... 282
5.22 Bypass ................................................................................................................................. 283
5.22.1 Overview .............................................................................................................................. 283
5.22.2 Bypass with synchronization with overlap ........................................................................... 284
5.22.3 Bypass with synchronization without overlap ...................................................................... 288
5.22.4 Bypass without synchronization ........................................................................................... 290
5.22.5 Function diagrams and parameters ..................................................................................... 292
5.23 Asynchronous pulse frequency ............................................................................................ 293
6 V/f control (vector control) .................................................................................................................... 297
6.1 Technological application ..................................................................................................... 301
6.2 Voltage boost ....................................................................................................................... 302
6.3 Slip compensation ................................................................................................................ 305
6.4 Resonance damping ............................................................................................................ 306
6.5 Vdc control ........................................................................................................................... 307
7 Basic functions ..................................................................................................................................... 313
7.1 Switching over units ............................................................................................................. 313
7.2 Reference parameters/scaling ............................................................................................. 315
7.3 Configuring the short-circuit/ground fault test mode ............................................................ 320
7.4 Modular machine concept .................................................................................................... 321
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Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions