The converter provides the control for a motor holding brake. The motor holding brake holds
the motor in position when it is switched o.
Motor holding brake (Page245)
The free function blocks permit congurable signal processing within the converter.
Free function blocks (Page249)
You can select in which physical units the converter represents its associated values.
Selecting physical units (Page251)
Safety functions
The safety functions fulll increased requirements regarding the functional safety of the drive.
Safe Torque O (STO) safety function (Page255)
Setpoints and setpoint processing
The setpoint generally determines the motor speed.
Setpoints (Page270)
The setpoint processing uses a ramp-function generator to prevent speed steps occurring and
to limit the speed to a permissible maximum value.
Setpoint processing (Page279)
Technology controller
The technology controller controls process variables, e.g. pressure, temperature, level or
ow. The closed-loop motor control receives the setpoint either from the higher-level control
or from the technology controller.
PID technology controller (Page289)
Motor control
The closed-loop motor control ensures that the motor follows the speed setpoint. You can
choose between various control modes.
Motor control (Page299)
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.
Electrically braking the motor (Page324)
Drive protection
The protection functions prevent damage to the motor, converter and driven load.
Overcurrent protection (Page336)
Converter protection using temperature monitoring (Page337)
Motor protection with temperature sensor (Page340)
Motor protection by calculating the temperature (Page342)
Motor and converter protection by limiting the voltage (Page344)
Advanced commissioning
8.1Overview of the converter functions
SINAMICS G120C Converters
184 Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
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