Siemens SINAMICS G120X - U;F Control FCC Starting Frequency; U;F FCC F_Start; Voltage Boost Total; U_Boost Total; Voltage Limiting; U_Lim

Dependency: The current limit p0640 limits the boost.
See also: 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 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2001 Dynamic index: -
Unit group: - Unit selection: - Function diagram: 6301, 6851
Min:
- [Vrms]
Max:
- [Vrms]
Factory setting:
- [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: See also: p1310, p1311, p1312
p1331[0...n] Voltage limiting / U_lim
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: 5_1 Unit selection: p0505 Function diagram: 6300
Min:
50.00 [Vrms]
Max:
2000.00 [Vrms]
Factory setting:
1000.00 [Vrms]
Description: Limiting the voltage setpoint.
This means that the output voltage can be reduced with respect to the calculated maximum voltage r0071 and the start
of field weakening.
Note
The output voltage is only limited if, as a result of p1331, the maximum output voltage (r0071) is fallen below.
p1333[0...n] U/f control FCC starting frequency / U/f FCC f_start
Access level: 3 Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 6301
Min:
0.00 [Hz]
Max:
3000.00 [Hz]
Factory setting:
0.00 [Hz]
Description: Sets the starting frequency at which FCC (Flux Current Control) is activated.
Dependency: The correct operating mode must be set (p1300 = 1, 6).
WARNING
An excessively low value can result in instability.
Note
For p1333 = 0 Hz, the FCC starting frequency is automatically set to 6 % of the rated motor frequency.
Parameters
7.2 Parameter list
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 671