Siemens SINAMICS G115D Operating Instructions Manual page 10

Table of contents
6.10 Motor holding brake ........................................................................................................ 179
6.11 Free function block .......................................................................................................... 183
6.12 Selecting physical units .................................................................................................... 184
6.12.1 Motor standard ................................................................................................................ 184
6.12.2 System of units ................................................................................................................ 185
6.12.3 Technological unit of the technology controller ................................................................ 186
6.12.4 Setting the system of units and technology unit ............................................................... 186
6.13 Safe Torque Off (STO) safety function .............................................................................. 187
6.13.1 Function description ........................................................................................................ 187
6.13.2 Commissioning STO ......................................................................................................... 190
6.13.2.1 Commissioning tool ......................................................................................................... 190
6.13.2.2 Safety function password ................................................................................................. 190
6.13.2.3 Configuring a safety function ........................................................................................... 191
6.13.2.4 Interconnecting the "STO active" signal ............................................................................ 192
6.13.2.5 Setting the filter for fail-safe digital inputs ........................................................................ 193
6.13.2.6 Setting the forced checking procedure (test stop) ............................................................. 195
6.13.2.7 Finalizing online commissioning ...................................................................................... 197
6.13.2.8 Checking the interconnection of digital inputs .................................................................. 198
6.13.2.9 Acceptance - completion of commissioning ...................................................................... 199
6.14 Setpoints ......................................................................................................................... 200
6.14.1 Overview ......................................................................................................................... 200
6.14.2 Specifying the setpoint via the fieldbus ............................................................................ 202
6.14.3 Electromechanical potentiometer .................................................................................... 203
6.14.4 Motorized potentiometer as setpoint source .................................................................... 204
6.14.5 Fixed speed setpoint as setpoint source............................................................................ 207
6.15 Setpoint processing ......................................................................................................... 210
6.15.1 Overview ......................................................................................................................... 210
6.15.2 Invert setpoint ................................................................................................................. 211
6.15.3 Inhibit direction of rotation .............................................................................................. 212
6.15.4 Skip frequency bands and minimum speed....................................................................... 213
6.15.5 Speed limitation .............................................................................................................. 214
6.15.6 Ramp-function generator ................................................................................................. 215
6.16 PID technology controller ................................................................................................. 220
6.17 Motor control .................................................................................................................. 228
6.17.1 U/f control ....................................................................................................................... 228
6.17.1.1 Characteristics of U/f control ............................................................................................ 229
6.17.1.2 Selecting the U/f characteristic ......................................................................................... 230
6.17.1.3 Optimizing motor starting ................................................................................................ 231
6.17.2 Sensorless vector control with speed controller ................................................................ 233
6.17.2.1 Structure of vector control without encoder (sensorless) .................................................. 233
6.17.2.2 Optimizing the closed-loop speed controller ..................................................................... 235
6.17.2.3 Advanced settings ........................................................................................................... 237
6.17.2.4 Friction characteristic ....................................................................................................... 239
6.17.2.5 Moment of inertia estimator ............................................................................................ 241
6.17.2.6 Pole position identification ............................................................................................... 248
6.17.3 Torque control ................................................................................................................. 249
6.18 Electrically braking the motor........................................................................................... 250
6.18.1 DC braking ....................................................................................................................... 251
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Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
SINAMICS G115D distributed drive