Which Motor Fits The Converter; Introduction, V/F Control, Vector Control - Siemens SINAMICS G120D Original Instructions Manual

Commissioning
5.2 Preparing for commissioning
5.2.1

Which motor fits the converter?

Ratio of the motor and inverter rated currents
The rated current of the motor must be in the range 13% to 100% of the rated converter
current.
Example: With an inverter with a rated current of 10.2 A, you can operate motors whose
rated currents are within the range of 1.3 A ... 10.2 A.
Figure 5-1
5.2.2

Introduction, V/f control, vector control

Specifying the control mode
The converter has three open-loop control and closed-loop control modes for induction
motors:
● Open-loop control with U/f-characteristic (U/f control)
● Field-oriented control (sensorless vector control)
● Speed control (vector control with encoder)
The control modes have different degrees of suitability when it comes to controlling a
position-controlled axis:
58
The rated currents of inverter and motor match
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA