Siemens SINAMICS G120 Operating Instructions Manual page 10

Table of contents
6.11 Essential service mode........................................................................................................245
6.12 Jogging.................................................................................................................................249
6.13 Switching over the drive control (command data set)..........................................................250
6.14 Free function blocks.............................................................................................................252
6.14.1 Overview..............................................................................................................................252
6.15 Selecting physical units........................................................................................................253
6.15.1 Select the motor standard....................................................................................................253
6.15.2 Selecting the system of units...............................................................................................253
6.15.3 Selecting the technological unit of the technology controller...............................................255
6.15.4 Setting the motor standard, system of units and technology unit using STARTER.............255
6.16 Setpoints..............................................................................................................................258
6.16.1 Analog input as setpoint source...........................................................................................259
6.16.2 Specifying the setpoint via the fieldbus................................................................................260
6.16.3 Motorized potentiometer as setpoint source........................................................................261
6.16.4 Fixed speed setpoint as setpoint source..............................................................................263
6.17 Setpoint calculation..............................................................................................................266
6.17.1 Overview of setpoint processing..........................................................................................266
6.17.2 Invert setpoint.......................................................................................................................267
6.17.3 Enable direction of rotation..................................................................................................268
6.17.4 Skip frequency bands and minimum speed.........................................................................269
6.17.5 Speed limitation....................................................................................................................270
6.17.6 Ramp-function generator.....................................................................................................271
6.18 PID technology controller.....................................................................................................274
6.18.1 Application examples for the technology controller..............................................................281
6.19 Free technology controllers..................................................................................................282
6.20 Multi-zone control ................................................................................................................284
6.21 Cascade control...................................................................................................................288
6.22 Real time clock (RTC)..........................................................................................................293
6.23 Time switch (DTC)...............................................................................................................295
6.24 Motor control........................................................................................................................296
6.24.1 Reactor, filter and cable resistance at the inverter output....................................................296
6.24.2 V/f control.............................................................................................................................297
6.24.2.1 Characteristics of U/f control................................................................................................299
6.24.2.2 Optimizing motor starting.....................................................................................................302
6.24.2.3 Optimizing the motor startup for application class Standard Drive Control..........................304
6.24.3 Encoderless vector control...................................................................................................306
6.24.3.1 Structure of vector control without encoder (sensorless).....................................................306
6.24.3.2 Optimizing the speed controller............................................................................................308
6.25 Electrically braking the motor...............................................................................................311
6.25.1 DC braking...........................................................................................................................313
6.25.2 Compound braking...............................................................................................................316
6.25.3 Dynamic braking..................................................................................................................318
6.25.4 Braking with regenerative feedback to the line....................................................................320
6.26 Overcurrent protection.........................................................................................................321
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Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE