Siemens SINAMICS S120 Function Manual page 14

Contents
3.4 Torque-controlled operation ........................................................................................................ 69
3.5 Torque setpoint limitation ............................................................................................................ 71
3.6 Current controller ........................................................................................................................ 75
3.7 Current setpoint filter................................................................................................................... 78
3.8 Note about the electronic motor model ....................................................................................... 84
3.9 V/f control for diagnostics............................................................................................................ 84
3.10 Optimizing the current and speed controller ............................................................................... 87
3.11 Sensorless operation (without an encoder) ................................................................................ 88
3.12 Motor data identification .............................................................................................................. 92
3.12.1 Motor data identification - induction motor .................................................................................. 94
3.12.2 Motor data identification - synchronous motor ............................................................................ 96
3.13 Pole position identification........................................................................................................... 98
3.14 Vdc control ................................................................................................................................ 102
3.15 Dynamic Servo Control (DSC) .................................................................................................. 106
3.16 Travel to fixed stop.................................................................................................................... 109
3.17 Vertical axes.............................................................................................................................. 113
4 Vector control ........................................................................................................................................ 115
4.1 Sensorless vector control (SLVC)............................................................................................. 115
4.2 Vector control with encoder....................................................................................................... 118
4.3 Speed controller ........................................................................................................................ 119
4.4 Speed controller adaptation ...................................................................................................... 121
4.5 Speed controller pre-control and reference model ................................................................... 124
4.6 Droop......................................................................................................................................... 127
Torque control ........................................................................................................................... 129
4.7
4.8 Torque limiting........................................................................................................................... 132
4.9 Vdc control ................................................................................................................................ 133
4.10 Current setpoint filter................................................................................................................. 137
4.11 Current controller adaptation..................................................................................................... 137
4.12 Motor data identification and rotating measurement................................................................. 138
4.13 Efficiency optimization............................................................................................................... 145
4.14 Instructions for commissioning induction motors (ASM)........................................................... 146
4.15 Instructions for commissioning permanent-magnet synchronous motors ................................ 148
4.15.1 Automatic encoder adjustment ................................................................................................. 152
4.15.2 Pole position identification......................................................................................................... 153
4.16 Flying restart ............................................................................................................................. 154
4.17 Synchronization......................................................................................................................... 156
4.18 Simulation operation ................................................................................................................. 157
4.18.1 Description ................................................................................................................................ 157
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Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions