Siemens SINAMICS G120 List Manual page 237

The magnitude of the boost in Volt at a frequency of zero is defined as follows (not for field orientation):
Voltage boost [V] = 1.732 * p0305 (rated motor current [A]) x r0395 (stator/primary section resistance [ohm]) x p1311
(voltage boost when accelerating [%]) / 100 %
Dependency: The current limit p0640 limits the boost.
For vector control, the starting current is realized using p1611.
Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
Refer to: p1300, p1310, p1312, r1315
Notice: The voltage boost results in a higher motor temperature increase.
Note: The voltage boost when accelerating can improve the response to small, positive setpoint changes.
Assigning priorities for the voltage boosts: refer to p1310
p1312[0...n] Starting current (voltage boost) when starting / I_start start
Access level: 2
Can be changed: U, T
Unit group: -
Min
0.0 [%]
Description: Setting for an additional voltage boost when powering-up, however, only for the first acceleration phase.
The voltage boost becomes effective for a positive setpoint increase and disappears as soon as the setpoint has
been reached. The build-up and withdrawal of the voltage boost are smoothed.
Dependency: The current limit p0640 limits the boost.
Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
Refer to: p1300, p1310, p1311, r1315
Notice: The voltage boost results in a higher motor temperature increase.
Note: The voltage boost when accelerating can improve the response to small, positive setpoint changes.
Assigning priorities for the voltage boosts: refer to p1310
For field orientation (p1302.4 = 1, not PM230, PM250, PM260), p1312 of the voltage boost is also added in the
direction of the load current (non-linear).
r1315 Voltage boost total / U_boost total
Access level: 3
Can be changed: -
Unit group: -
Min
- [Vrms]
Description: Displays the total resulting voltage boost in volt.
For field orientation (p1302.4 = 1, not for PM230, PM250, PM260), at low speeds, as a minimum the magnetizing
current is set, so that the voltage depends on r0331.
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
Refer to: p1310, p1311, p1312
p1320[0...n] U/f control programmable characteristic frequency 1 / Uf char f1
Access level: 3
Can be changed: U, T
Unit group: -
Min
0.00 [Hz]
Description: The programmable characteristic for the U/f control is defined using 4 points and 0 Hz/p1310.
This parameter specifies the voltage of the first point along the characteristic.
Dependency: Selects the freely programmable characteristic using p1300 = 3.
The following applies to the frequency values: p1320 <= p1322 <= p1324 <= p1326. Otherwise, a standard
characteristic is used that contains the rated motor operating point.
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
Refer to: p1300, p1310, p1311, p1321, p1322, p1323, p1324, p1325, p1326, p1327
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
Calculated: -
Scaling: -
Unit selection: -
Max
250.0 [%]
Calculated: -
Scaling: p2001
Unit selection: -
Max
- [Vrms]
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
3000.00 [Hz]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6300, 6301, 6851
Factory setting
0.0 [%]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 6301, 6851
Factory setting
- [Vrms]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6301
Factory setting
0.00 [Hz]
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