Siemens SINAMICS G120 Operating Instructions Manual page 147

Low voltage inverters built-in units with cu250s-2 control units and encoder evaluation
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Control mode U/f control or flux current control (FCC) Vector control without an encoder
Position con‐
Without position control
trol
Commission‐
● Unlike "Dynamic Drive Control," no
ing
speed controller needs to be set
● When compared to "Expert":
Simplified commissioning
using predefined motor data
Reduced number of
parameters
Select the I/O configuration to preassign the inverter interfaces.
Set the applicable motor standard and the inverter supply voltage.
Select the application for the inverter:
● "[0] Load cycle with high overload for applications requiring a high dynamic performance,
e.g. conveyor systems.
● "[1] Load cycle with low overload ..." for applications that do not require a high dynamic
performance, e.g. pumps or fans.
● [6], [7]: Load cycles for applications with encoderless 1FK7 synchronous motors.
If an optional component is installed between inverter and motor, the corresponding setting
must be performed.
If a braking resistor is installed, you set the maximum braking power to which the braking
resistor will be subjected.
Select your motor.
Enter the motor data according to the rating plate of your motor.
If you have selected a motor based on its article number, the data has already been entered.
Define whether the inverter actuates a motor holding brake.
Set the most important parameters to suit your application.
Technological use:
● [0]: In all applications that do not fall under [1] ... [3]
● [1]: Applications involving pumps and fans
● [2]: Applications with short ramp-up and ramp-down times. However, this setting is not
suitable for hoisting gear and cranes/lifting gear.
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Factory interface settings (Page 96)
Default setting of the interfaces (Page 98)
● Positioning cycles using the "Basic positioner" function > approx.
500ms
● Memory card with "Basic positioner" license required
● The "Travel to fixed stop"
function is not possible.
● Fewer parameters when compared to "Configuration for experts"
Commissioning
5.4 Quick commissioning with a PC
Vector control with an encoder
● No restrictions regarding the
functions of the basic
positioner
145

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