Siemens SINAMICS G120C Operating Instructions Manual page 186

Advanced commissioning
8.1 Overview of the converter functions
The converter provides the control for a motor holding brake. The motor holding brake holds
the motor in position when it is switched off.
The free function blocks permit configurable signal processing within the converter.
You can select in which physical units the converter represents its associated values.
Safety functions
The safety functions fulfill increased requirements regarding the functional safety of the drive.
Setpoints and setpoint processing
The setpoint generally determines the motor speed.
The setpoint processing uses a ramp-function generator to prevent speed steps occurring and
to limit the speed to a permissible maximum value.
Technology controller
The technology controller controls process variables, e.g. pressure, temperature, level or
flow. The closed-loop motor control receives the setpoint either from the higher-level control
or from the technology controller.
Motor control
The closed-loop motor control ensures that the motor follows the speed setpoint. You can
choose between various control modes.
The converter provides several methods to brake the motor electrically. During electrical
braking, the motor develops a torque that reduces the speed down to standstill.
Drive protection
The protection functions prevent damage to the motor, converter and driven load.
184
Motor holding brake (Page 245)
Free function blocks (Page 249)
Selecting physical units (Page 251)
Safe Torque Off (STO) safety function (Page 255)
Setpoints (Page 270)
Setpoint processing (Page 279)
PID technology controller (Page 289)
Motor control (Page 299)
Electrically braking the motor (Page 324)
Overcurrent protection (Page 336)
Converter protection using temperature monitoring (Page 337)
Motor protection with temperature sensor (Page 340)
Motor protection by calculating the temperature (Page 342)
Motor and converter protection by limiting the voltage (Page 344)
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
SINAMICS G120C Converters