Siemens SINAMICS G120 Operating Instructions Manual page 9

6.2.6 Two-wire control, method 3 .................................................................................................. 169
6.2.7 Three-wire control, method 1 ................................................................................................ 170
6.2.8 Three-wire control, method 2 ................................................................................................ 171
6.2.9 Running the motor in jog mode (JOG function) .................................................................... 172
6.2.10 Control via PROFIBUS or PROFINET with the PROFIdrive profile ..................................... 173
6.2.10.1 Control and status word 1 ..................................................................................................... 175
6.2.10.2 Control and status word 3 ..................................................................................................... 178
6.2.10.3 NAMUR message word ........................................................................................................ 180
6.2.10.4 Data structure of the parameter channel .............................................................................. 180
6.2.10.5 Examples of the parameter channel ..................................................................................... 184
6.2.10.6 Extend telegrams and change signal interconnection .......................................................... 185
6.2.10.7 Configuring the IP interface .................................................................................................. 187
6.2.10.8 Slave-to-slave communication .............................................................................................. 187
6.2.10.9 Acyclically reading and writing inverter parameters ............................................................. 188
6.2.11 Control via additional fieldbuses ........................................................................................... 189
6.2.11.1 Modbus RTU ......................................................................................................................... 189
6.2.11.2 USS ....................................................................................................................................... 192
6.2.11.3 CANopen .............................................................................................................................. 195
6.2.11.4 BACnet MS/TP ...................................................................................................................... 196
6.2.11.5 Ethernet/IP ............................................................................................................................ 199
6.2.11.6 P1 .......................................................................................................................................... 200
6.2.12 Switching over the inverter control (command data set) ...................................................... 201
6.3 Setpoints ............................................................................................................................... 203
6.3.1 Analog input as setpoint source ............................................................................................ 204
6.3.2 Specifying the setpoint via the fieldbus................................................................................. 205
6.3.3 Motorized potentiometer as setpoint source ......................................................................... 206
6.3.4 Fixed speed as setpoint source ............................................................................................ 208
6.4 Setpoint calculation ............................................................................................................... 211
6.4.1 Overview of setpoint processing ........................................................................................... 211
6.4.2 Invert setpoint ....................................................................................................................... 212
6.4.3 Enable direction of rotation ................................................................................................... 213
6.4.4 Skip frequency bands and minimum speed .......................................................................... 214
6.4.5 Speed limitation .................................................................................................................... 215
6.4.6 Ramp-function generator ...................................................................................................... 216
6.5 Motor control ......................................................................................................................... 219
6.5.1 V/f control .............................................................................................................................. 219
6.5.1.1 Characteristics of U/f control ................................................................................................. 221
6.5.1.2 Optimizing motor starting ...................................................................................................... 224
6.5.2 Vector control with speed controller ...................................................................................... 227
6.5.2.1 Overview ............................................................................................................................... 227
6.5.2.2 Optimizing the speed controller ............................................................................................ 229
6.6 Protection functions .............................................................................................................. 231
6.6.1 Inverter temperature monitoring ........................................................................................... 231
6.6.2 Motor temperature monitoring using a temperature sensor ................................................. 234
6.6.3 Protecting the motor by calculating the motor temperature .................................................. 236
6.6.4 Overcurrent protection .......................................................................................................... 238
6.6.5 Limiting the maximum DC link voltage .................................................................................. 239
6.7 Application-specific functions ................................................................................................ 241
6.7.1 Unit changeover .................................................................................................................... 241
6.7.1.1 Changing over the motor standard ....................................................................................... 242
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB
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