Siemens SINAMICS G110M - Page 9

Table of contents
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
9
7.5.5.3 Acyclic communication - manufacturer-specific .................................................................... 158
8 Functions ............................................................................................................................................ 161
8.1 Overview of converter functions ........................................................................................... 161
8.2 Inverter control ...................................................................................................................... 163
8.2.1 Switching the motor on and off ............................................................................................. 163
8.2.2 Running the motor in jog mode (JOG function) .................................................................... 164
8.2.3 Switching over the converter control (command data set) ................................................... 165
8.3 Command sources ................................................................................................................ 168
8.4 Setpoint sources ................................................................................................................... 169
8.4.1 Analog input as setpoint source ............................................................................................ 170
8.4.2 Specifying the motor speed via the fieldbus ......................................................................... 170
8.4.3 Electromechanical potentiometer ......................................................................................... 171
8.4.4 Motorized potentiometer as setpoint source ......................................................................... 172
8.4.5 Fixed speed as setpoint source ............................................................................................ 173
8.5 Setpoint calculation ............................................................................................................... 176
8.5.1 Overview of setpoint processing ........................................................................................... 176
8.5.2 Invert setpoint ....................................................................................................................... 176
8.5.3 Inhibit direction of rotation ..................................................................................................... 177
8.5.4 Skip frequency bands and minimum speed .......................................................................... 177
8.5.5 Speed limitation .................................................................................................................... 178
8.6 Motor control ......................................................................................................................... 181
8.6.1 V/f control .............................................................................................................................. 182
8.6.1.1 Characteristics of U/f control ................................................................................................. 183
8.6.1.2 Selecting the U/f characteristic ............................................................................................. 184
8.6.1.3 Optimizing motor starting ...................................................................................................... 185
8.6.2 Vector control with closed loop speed control ...................................................................... 187
8.6.2.1 Characteristics of the closed loop speed control .................................................................. 187
8.6.2.2 Select motor control .............................................................................................................. 188
8.6.2.3 Optimizing the speed controller ............................................................................................ 189
8.6.2.4 Friction characteristic ............................................................................................................ 191
8.6.2.5 Moment of inertia estimator .................................................................................................. 193
8.6.3 Torque control ....................................................................................................................... 199
8.7 Protection functions .............................................................................................................. 200
8.7.1 Inverter temperature monitoring ........................................................................................... 200
8.7.2 Motor temperature monitoring using a temperature sensor ................................................. 203
8.7.3 Protecting the motor by calculating the motor temperature .................................................. 206
8.7.4 Overcurrent protection .......................................................................................................... 207
8.7.5 Limiting the maximum DC link voltage .................................................................................. 208
8.8 Status messages .................................................................................................................. 209
8.8.1 System runtime .....................................................................................................................
210
8.9 Application-specific functions ................................................................................................ 210
8.9.1 Calculating the energy saving ............................................................................................... 210
8.9.2 Unit changeover .................................................................................................................... 213
8.9.2.1 Changing over the motor standard ....................................................................................... 214
8.9.2.2 Changing over the unit system ............................................................................................. 214
8.9.2.3 Changing over units for the technology controller ................................................................ 215
8.9.2.4 Switching units with STARTER ............................................................................................. 215