SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
227
2 Parameters
2.2 List of parameters
Description:
Sets the response for the Vdc_min controller (kinetic buffering).
Value:
0:
Buffer Vdc until undervoltage, n<p1257 -> F07405
1:
Buff. Vdc until undervolt., n<p1257 -> F07405, t>p1255 -> F07406
Dependency:
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Refer to: F07405, F07406
Description:
Sets the speed threshold for the Vdc-min controller (kinetic buffering).
If this value is exceeded a fault is output; the required response can be parameterized .
Kinetic buffering is not started below the speed threshold.
Dependency:
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Note:
Exiting the Vdc_min control before reaching motor standstill prevents the regenerative braking current from
increasing significantly at low speeds, and after a pulse inhibit, means that the motor coasts down.
However, the maximum braking torque can be set via the appropriate torque limiting.
Description:
Displays the actual output of the Vdc controller (DC link voltage controller)
Dependency:
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Note:
The regenerative power limit p1531 is used for vector control to precontrol the Vdc_max controller. The lower the
power limit is set, the lower the correction signals of the controller when the voltage limit is reached.
Description:
Sets the maximum search frequency for a flying restart in an inhibited setpoint direction (p1110, p1111).
Note:
The parameter has no effect for an operating mode, which only searches in the setpoint direction (p1200 > 3).
p1256[0...n]
Vdc_min controller response (kinetic buffering) / Vdc_min response
PM240
Access level:
3
Calculated:
-
Data type:
Integer16
Can be changed:
U, T
Scaling:
-
Dyn. index:
DDS, p0180
Unit group:
-
Unit selection:
-
Func. diagram:
-
Min Max
Factory
setting
0 1 0
p1257[0...n]
Vdc_min controller speed threshold / Vdc_min n_thresh
PM240
Access level:
3
Calculated:
p0340 = 1
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Dyn. index:
DDS, p0180
Unit group:
3_1
Unit selection:
p0505
Func. diagram:
-
Min Max
Factory
setting
0.00 [rpm]
210000.00 [rpm]
50.00 [rpm]
r1258
CO: Vdc controller output / Vdc_ctrl output
PM240
Access level:
3
Calculated:
-
Data type:
FloatingPoint32
Can be changed:
-
Scaling:
p2002
Dyn. index:
-
Unit group:
6_2
Unit selection:
p0505
Func. diagram:
6220
Min Max
Factory
setting
- [Arms]
- [Arms]
- [Arms]
p1271[0...n]
Flying restart maximum frequency for the inhibited direction / FlyRes f_max dir
Access level:
3
Calculated:
-
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Dyn. index:
DDS, p0180
Unit group:
-
Unit selection:
-
Func. diagram:
-
Min Max
Factory
setting
0 [Hz]
650 [Hz]
0 [Hz]