Further information
For additional information refer to the function diagrams 7950 ... 7958 of the List Manual.
You will nd additional information on the following PID controller components in the
Internet at:
• Setpoint input: Analog value or xed setpoint
• Setpoint channel: Scaling, ramp-function generator and lter
• Actual value channel: Filter, limiting and signal processing
• PID controller: Principle of operation of the D component, inhibiting the I component and the
control sense
• Enable, limiting the controller output and fault response
FAQ (https://support.industry.siemens.com/cs/ww/en/view/92556266)
7.20 Motor control
Overview
The converter has two alternative methods to ensure the motor speed follows the congured
speed setpoint:
• U/f control
• Vector control
7.20.1 Setting the saturation characteristic of the permanent magnet synchronous
motor (third-party motor)
Overview
The motor control of the converter requires the simulation of the saturation characteristic
"Quadrature axis ux over quadrature axis current" of the permanent magnet synchronous
motor.
The saturation characteristics of Siemens motors are stored in the converter.
For non-Siemens motors, you need to set the saturation characteristic using the motor data
sheet, for example.
Precondition
Quick commissioning has been completed.
The saturation characteristic for a third-party motor is available.
Advanced commissioning
7.20Motor control
SINAMICS G115D Wall Mounted distributed drive
282 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA