Siemens SINAMICS G120 List Manual page 195

Bit field: Bit
00
02
Note: For bit 00:
De-activate the ramp-up for Vdc_min control.
For drives with a mechanical system that can oscillate and high moment of inertia, the speed can be more quickly
tracked.
For bit 02:
When the line supply returns, normal operation is resumed earlier, and the system does not wait until the Vdc min
controller reaches the setpoint speed.
r1282 Vdc_max controller switch-in level (U/f) / Vdc_max on_level
PM230 Access level: 3
PM230_STO
Can be changed: -
PM240
Unit group: -
Min
- [V]
Description: Displays the switch-in level for the Vdc_max controller.
If p1294 = 0 (automatic sensing of the switch-in level = off), then the following applies:
r1282 = 1.15 * sqrt(2) * p0210 (supply voltage)
If p1294 = 1 (automatic sensing of the switch-in level = on), then the following applies:
r1282 = Vdc_max - 50.0 V (Vdc_max: Overvoltage threshold of the power unit)
r1282 = Vdc_max - 25.0 V (for 230 V power units)
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
Notice: If the activation level of the Vdc_max controller is already exceeded in the de-activated state (pulse inhibit) by the DC
link voltage, then the controller can be automatically de-activated (see F07401), so that the drive is not accelerated
the next time that it is activated.
Note: The Vdc_max controller is not switched back off until the DC-link voltage falls below the threshold 0.95 * r1282 and
the controller output is zero.
p1283[0...n] Vdc_max controller dynamic factor (U/f) / Vdc_max dyn_factor
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: -
Min
1 [%]
Description: Sets the dynamic factor for the DC link voltage controller (Vdc_max controller).
100% means that p1290, p1291, and p1292 (gain, integral time, and rate time) are used in accordance with their
basic settings and on the basis of a theoretical controller optimization.
If subsequent optimization is required, this can be carried out using the dynamic factor. In this case, p1290, p1291,
and p1292 are weighted with the dynamic factor p1283.
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
p1284[0...n] Vdc_max controller time threshold (U/f) / Vdc_max t_thresh
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: -
Min
0.000 [s]
Description: Sets the monitoring time for the Vdc_max controller.
If the down ramp of the speed setpoint is held for longer than the time set in p1284, then fault F07404 is output.
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
SINAMICS G120 Control Units CU240B-2/CU240E-2
List Manual (LH11), 01/2016, A5E33839529
Signal name
Vdc min control (U/f) without up ramp
Vdc min shorter wait time when the line
returns
1 signal
Yes
Yes
Calculated: -
Scaling: p2001
Unit selection: -
Max
- [V]
Calculated: p0340 = 1,3,4
Scaling: -
Unit selection: -
Max
10000 [%]
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
300.000 [s]
2 Parameters
2.2 List of parameters
0 signal
No
No
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 6320
Factory setting
- [V]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6320
Factory setting
100 [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
4.000 [s]
FP
-
-
195