Siemens SINAMICS G120 Operating Instructions Manual page 10

Table of contents
7.8.3 Integrating the converter into CANopen .................................................................................... 210
7.8.3.1 Connecting inverter to CAN bus ............................................................................................... 211
7.8.3.2 Setting the node ID and baud rate ............................................................................................ 211
7.8.3.3 Setting the baud rate ................................................................................................................. 212
7.8.3.4 Setting the monitoring of the communication ............................................................................ 212
7.8.4 Free PDO mapping for example of the actual current value and torque limit ........................... 213
8 Setting functions .................................................................................................................................. 215
8.1 Overview of the converter functions .......................................................................................... 215
8.2 Inverter control .......................................................................................................................... 217
8.2.1 Switching the motor on and off ................................................................................................. 217
8.2.2 Inverter control using digital inputs ........................................................................................... 219
8.2.3 Two-wire control: method 1 ....................................................................................................... 220
8.2.4 Two-wire control, method 2 ....................................................................................................... 221
8.2.5 Two-wire control, method 3 ....................................................................................................... 222
8.2.6 Three-wire control, method 1 .................................................................................................... 223
8.2.7 Three-wire control, method 2 .................................................................................................... 224
8.2.8 Running the motor in jog mode (JOG function) ........................................................................ 225
8.2.9 Switching over the inverter control (command data set) ........................................................... 226
8.3 Setpoints ................................................................................................................................... 229
8.3.1 Overview ................................................................................................................................... 229
8.3.2 Analog input as setpoint source ................................................................................................ 230
8.3.3 Specifying the motor speed via the fieldbus ............................................................................. 230
8.3.4 Motorized potentiometer as setpoint source ............................................................................. 231
8.3.5 Fixed speed as setpoint source ................................................................................................ 233
8.4 Setpoint calculation ................................................................................................................... 235
8.4.1 Overview of setpoint processing ............................................................................................... 235
8.4.2 Invert setpoint ............................................................................................................................ 235
8.4.3 Inhibit direction of rotation ......................................................................................................... 236
8.4.4 Minimum speed ......................................................................................................................... 236
8.4.5 Maximum speed ........................................................................................................................ 237
8.4.6 Ramp-function generator .......................................................................................................... 237
8.5 Motor control ............................................................................................................................. 242
8.5.1 V/f control .................................................................................................................................. 242
8.5.1.1 Characteristics of U/f control ..................................................................................................... 243
8.5.1.2 Selecting the U/f characteristic ................................................................................................. 244
8.5.1.3 Optimizing with a high break loose torque and brief overload .................................................. 246
8.5.2 Closed-loop speed control ........................................................................................................ 248
8.5.2.1 Checking the encoder signal ..................................................................................................... 249
8.5.2.2 Select motor control .................................................................................................................. 249
8.5.2.3 Optimizing the speed controller................................................................................................. 251
8.5.2.4 Advanced settings ..................................................................................................................... 253
8.5.3 Torque control ........................................................................................................................... 254
Protection functions ................................................................................................................... 255
8.6
8.6.1 Inverter temperature monitoring ................................................................................................ 255
8.6.2 Motor temperature monitoring using a temperature sensor ...................................................... 256
8.6.3 Overcurrent protection .............................................................................................................. 258
8.6.4 Limiting the maximum DC link voltage ...................................................................................... 258
8.7 Application-specific functions .................................................................................................... 260
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Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB