Siemens SINAMICS G120 Manual page 174

Parameters
List of Parameters
p1269[0...1] BI: Bypass switch feedback signal / Bypass FS
Access level: 3
Can be changed: U, T
Units group: -
Min
-
Description: Sets the signal source for the feedback signal of the bypass switch.
Index: [0] = Switch motor/drive
[1] = Switch motor/line supply
Note: In the case of switches without a feedback signal, interconnect the corresponding control bit as the signal source:
BI: p1269[0] = r1261.0
BI: p1269[1] = r1261.1
Entering p1269 = 0 sets this interconnection automatically for switches without a feedback signal.
p1274[0...1] Bypass switch monitoring time / Switch t_monit
Access level: 3
Can be changed: U, T
Units group: -
Min
0 [ms]
Description: Sets the monitoring time for the bypass switch.
Index: [0] = Switch motor/drive
[1] = Switch motor/line supply
Note: The monitoring is de-activated with p1274 = 0 ms.
The changeover time for the bypass (p1262) is extended by the value in this parameter.
p1280[0...n] Vdc controller or Vdc monitoring configuration (U/f) / Vdc_ctr config U/f
PM230 Access level: 3
Can be changed: U, T
Units group: -
Min
0
Description: Sets the configuration of the controller for the DC link voltage (Vdc controller) in the U/f operating mode.
Value: 0:
1:
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 always recommend using vector control (p1300 = 20) (Vdc controller, see p1240).
1-174
Inhib Vdc ctrl
Vdc_max controller enable
Calculated: -
Scaling: -
Unit selection: -
Max
-
Calculated: -
Scaling: -
Unit selection: -
Max
5000 [ms]
Calculated: -
Scaling: -
Unit selection: -
Max
1
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 01/2011
Data type: U32 / Binary
Data set: -
Factory setting
[0] 1261.0
[1] 1261.1
Data type: FloatingPoint32
Data set: -
Factory setting
1000 [ms]
Data type: Integer16
Data set: DDS, p0180
Factory setting
1
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