SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
247
2 Parameters
2.2 List of parameters
Description:
Sets the configuration for flux setpoint control
Dependency:
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Note:
For bit 00 (not for permanent-magnet synchronous motors):
Initially, the flux is only established with a low rate of rise when magnetizing the induction motor. The flux setpoint
p1570 is reached again at the end of the magnetizing time p0346.
For bit 01 (not for permanent-magnet synchronous motors):
Initially, the flux is only established with a low rate of rise when magnetizing the induction motor. The flux setpoint
p1570 is reached again at the end of the magnetizing time p0346. When quick magnetizing (p1401.6 = 1) is selected,
soft starting is internally de-activated and alarm A07416 is displayed.
The flux differentiation can be switched out if a significant ripple occurs in the field-generating current setpoint (r0075)
when entering the field weakening range. However, this is not suitable for fast acceleration operations because then,
the flux decays more slowly and the voltage limiting responds.
For bit 02 (not for permanent-magnet synchronous motors):
The flux build-up control operates during the magnetizing phase p0346 of the induction motor. If it is switched out, a
constant current setpoint is injected and the flux is built up corresponding to the rotor time constant. When quick
magnetizing (p1401.6 = 1) is selected and when flux build-up control is de-energized alarm A07416 is displayed.
For bit 06 (not for induction motors):
Magnetizing is performed with maximum current (0.9 * r0067). With active identification of the stator resistance (see
p0621) quick magnetizing is internally de-activated and alarm A07416 is displayed. During a flying restart of a
rotating motor (see p1200) no quick magnetizing takes place.
For bit 07:
if the speed of the drive exceeds the effective speed limit of the speed limiting controller, the torque limit is reduced
linearly to zero as the deviation becomes greater. This reduces the integral component of the speed controller and, in
turn, the overshoot during load shedding (see also F07901 and p2162).
For bit 14:
When the function is activated, the following applies:
- the optimum flux is calculated and the power loss is entered for optimization purposes
- the efficiency optimization (p1580) is not active.
It only makes sense to activate this function if the dynamic response requirements of the speed controller are low.
In order to avoid oscillations, if required, the speed controller parameters should be adapted (increase Tn, reduce
Kp). Further, the smoothing time of the flux setpoint filter (p1582) should be increased.
p1401[0...n]
Flux control configuration / Flux ctrl config
Access level:
3
Calculated:
-
Data type:
Unsigned16
Can be changed:
U, T
Scaling:
-
Dyn. index:
DDS, p0180
Unit group:
-
Unit selection:
-
Func. diagram:
6491
Min Max
Factory
setting
-
-
0000 0000 0000 0110 bin
Bit field:
Bit
Signal name
1 signal
0 signal
FP
00
Flux setpoint soft starting active
Yes
No
6722
01
Flux setpoint differentiation active
Yes
No
6723
02
Flux build-up control active
Yes
No
6722,
6723
06
Quick magnetizing
Yes
No
6722
07
Pre-control speed limitation
Yes
No
6640
14
Efficiency optimization 2 active
Yes
No
6722,
6837