Siemens SINAMICS G120 Operating Instructions Manual page 145

Control mode
Power Modules
that can be oper‐
ated
Max. output fre‐
quency
Closed-loop tor‐
que control
Commissioning
● Contrary to encoderless vector control, the
speed controller does not have to be set
Select the default setting for the interfaces of the inverter that is suitable for your application.
Figure 5-9
Figure 5-10
Ramp-down time for the OFF3 command
Motor data identification: Select the method which the inverter uses to measure the data of
the connected motor:
● OFF: Motor data is not measured.
● STIL ROT: Recommended setting: Measure the motor data at standstill and with the motor
rotating. The inverter switches off the motor after the motor data identification has been
completed.
● STILL: Measure the motor data at standstill. The inverter switches off the motor after the
motor data identification has been completed.
Select this setting if one of the following cases is applicable:
– You have selected control mode "SPD N EN", however, the motor cannot freely rotate
– You have selected U/f control as control mode, e.g. "VF LIN"or "VF QUAD".
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2017, FW V4.7 SP6, A5E34259001B AD
U/f control or flux current control (FCC)
550 Hz
Without torque control
Default settings of the CU240B-2 interfaces (Page 97)
Default settings of the CU240E-2 interfaces (Page 106)
Minimum speed of the motor
Ramp-up and ramp-down time of the motor
- for a mechanically limited travel range, for example.
5.4 Quick commissioning using the BOP-2 operator panel
Sensorless vector control
No restrictions
Torque control with and without higher-level speed
Commissioning
240 Hz
control
145