User Manual
List of parameters
Parameters
1-183
© Siemens AG 2009 - 2013 All Rights Reserved
SINAMICS G120 CU240B/E-2 Control Units List Manual (LH11), 01/2013
Notice: If a time threshold has been parameterized, the Vdc_max controller should also be activated (p1240 = 3) so that the
drive does not shut down with overvoltage when Vdc_min control is exited (due to the time violation) and in the
event of fault response OFF3. It is also possible to increase the OFF3 ramp-down time p1135.
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: 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 .
Description: Displays the actual output of the Vdc controller (DC link voltage controller)
Note: The regenerative power limit p1531 is used for vector control to pre-control 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 configuration of the controller for the DC link voltage (Vdc controller) in the U/f operating mode.
Value: 0: Inhib Vdc ctrl
1: Enable Vdc_max controller
Note: For high input voltages (see p0210), the following settings can improve the degree of ruggedness of the Vdc_max
controller:
- Set the input voltage p0210 as low as possible (in so doing avoid A07401).
- Set the rounding times (p1130, p1136).
- Increase the ramp-down times (p1121).
- Reduce the integral time of the controller (p1291) (factor 0.5).
- Activate the Vdc correction in the current controller (p1810 bit 1 = 1) or reduce the derivative action time of the
controller (p1292) (factor 0.5).
In this case, we generally recommend to use vector control (p1300 = 20) (Vdc controller, see p1240).
p1256[0...n] Vdc_min controller response (kinetic buffering) / Vdc_min response
PM230
PM240
Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 1 0
p1257[0...n] Vdc_min controller speed threshold / Vdc_min n_thresh
PM230
PM240
Access level: 3 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units 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
PM230
PM240
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2002 Dyn. index: -
Units group: 6_2 Unit selection: p0505 Func. diagram: 6220
Min Max Factory setting
- [Arms] - [Arms] - [Arms]
p1280[0...n] Vdc controller configuration (U/f) / Vdc_ctr config U/f
PM230 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 1690, 6320
Min Max Factory setting
0 1 1