Siemens SINAMICS G120 Operating Instructions Manual page 174

Advanced commissioning
6.1 Overview of the inverter functions
The free function blocks permit configurable signal processing within the inverter.
You can select in which physical units the inverter represents its associated values.
Security functions
The safety functions fulfill increased requirements regarding the functional safety of the drive.
The extended safety functions monitor the drive speed.
The extended safety functions are described in the "Safety Integrated" function manual.
Setpoints and setpoint processing
The setpoint normally defines 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 motor control receives the setpoint either from the higher-level control or from the
technology controller.
Motor control
The motor closed-loop control ensures that the motor follows the speed setpoint. You can
choose between various control modes.
The inverter provides several methods to brake the motor electrically. During electrical braking,
the motor develops a torque that reduces the speed to standstill.
Protection of the drive and the driven load
The protection functions prevent damage to the motor, inverter and driven load.
174
Motor holding brake (Page 222)
Free function blocks (Page 226)
Selecting physical units (Page 227)
Safe Torque Off (STO) safety function (Page 231)
Overview of the manuals (Page 504)
Setpoints (Page 251)
Setpoint calculation (Page 259)
PID technology controller (Page 269)
Motor control (Page 275)
Electrically braking the motor (Page 302)
Overcurrent protection (Page 312)
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2017, FW V4.7 SP6, A5E34259001B AD