Siemens SINAMICS G120C DP User Manual

Control mode U/f control or 󹪞ux current control (FCC) Sensorless vector control
Properties
• Typical settling time after a speed change:
100ms…200ms
• Typical settling time after a load surge: 500ms
6SHHG
/RDG
0RWRU
WRUTXH
W
W
W
PV
• The control mode is suitable to address the fol‐
lowing requirements:
– Motor power ratings <45kW
– Ramp-up time 0→rated speed (depending
on the motor power rating):
1s(0.1kW)…10s(45kW)
– Applications with steady load torque without
load surges
• The control mode is insensitive with respect to
imprecise setting of the motor data
• Typical settling time after a speed change:
<100ms
• Typical settling time after a load surge: 200ms
6SHHG
/RDG
0RWRU
WRUTXH
W
W
PV
• The control mode controls and limits the motor
torque
• Torque accuracy that can be achieved: ± 5 % for
15%…100% of the rated speed
• We recommend the control mode for the follow‐
ing applications:
– Motor power ratings >11kW
– For load surges of 10 % … >100 % of the rated
motor torque
• The control mode is necessary for a ramp-up
time 0→rated speed (dependent on the rated
motor power): < 1 s (0.1 kW) … < 10 s (132 kW).
Application ex‐
amples
• Pumps, fans, and compressors with 󹪞ow charac‐
teristic
• Wet or dry blasting technology
• Mills, mixers, kneaders, crushers, agitators
• Horizontal conveyor technology (conveyor belts,
roller conveyors, chain conveyors)
• Basic spindles
• Pumps and compressors with displacement ma‐
chines
• Rotary furnaces
• Extruder
• Centrifuges
Motors that can
be operated
Induction motors Induction and synchronous motors
Max. output fre‐
quency
550Hz 240Hz
Torque control Without torque control Speed control with lower-level torque control
Commissioning
• In contrast to sensorless vector control, the
speed controller does not have to be set

Select the default setting for the interfaces of the converter that is suitable for your
application.
Default setting of the interfaces (Page92)
Commissioning
5.4Quick commissioning using the BOP-2 operator panel
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 135

Siemens SINAMICS G120C DP Specifications

General

Protection Rating	IP20
Frequency Range	0 to 650 Hz
Control Modes	V/f, sensorless vector control
Communication Interfaces	PROFIBUS DP
Ambient Temperature	-10 to +50 °C (without derating), -10 to +60 °C (with derating)
Overload Capacity	150 % rated current for 60 s, 200 % rated current for 3 s
Storage Temperature	-40 to +70 °C
Relative Humidity	5% to 95% (non-condensing)
Voltage Range	200 V to 240 V (±10%), 380 V to 480 V (±10%)
Output Voltage	0 V to Supply Voltage