Siemens SINAMICS G120 Operating Instructions Manual page 241

Low voltage converter with the cu240b-2 and cu240e-2 control units
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Characteristics after selecting the application class Standard Drive Control
Selecting application class Standard Drive Control reduces the number of characteristics and
the setting options:
● A linear and a parabolic characteristic are available.
● Selecting a technological application defines the characteristic.
● The following cannot be set - ECO mode, FCC, the programmable characteristic and a
specific voltage setpoint.
Image 6-33
Table 6- 35
Linear and parabolic characteristics
Requirement
Application examples
The required
Conveyor belts, roller convey-
torque is inde-
ors, chain conveyors, eccen-
pendent of the
tric worm pumps,
speed
compressors, extruders, cen-
trifuges, agitators, mixers
The required
Centrifugal pumps, radial fans,
torque increases
axial fans
with the speed
Additional information on the characteristics can be found in the parameter list and in the
function diagrams 6851 ff of the List Manual.
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
The closed-loop starting current control optimizes the speed control at low speeds
The inverter compensates the voltage drop across the motor stator resistance
Characteristics after selecting Standard Drive Control
Remark
-
Lower losses in the motor and in-
verter than for a linear characteristic.
Advanced commissioning
6.5 Motor control
Characteristic
Parameter
Linear
p0501 = 0
Parabolic
p0501 = 1
241

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