Siemens SINAMICS G120XA, Operating Instructions Manual, Page: 533 / 918

p1580[0...n] Efficiency optimization / Efficiency opt.
CUG120XA_USS
(PM330)
Access level: 3 Calculated:
CALC_MOD_LIM_REF
Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 6722
Min:
0 [%] Max:
100 [%] Factory setting:
100 [%]
Description: Sets the efficiency optimization.
When optimizing the efficiency, the flux setpoint of the closed-loop control is adapted as a function of the load.
For p1580 = 100 %, under no-load operating conditions, the flux setpoint is reduced to 50 % of the rated motor flux.
Dependency: See also: p0500
Note
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.
p1581[0...n] Flux reduction factor / Flux red factor
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: -
Min:
0 [%] Max:
100 [%] Factory setting:
100 [%]
Description: The following applies for a synchronous reluctance motor:
Sets the lower limit of the flux setpoint to evaluate the optimum flux characteristic.
The value is referred to the rated motor flux (p0357 * r0331).
p1582[0...n] Flux setpoint smoothing time / Flux setp T_smth
Access level: 3 Calculated: CALC_MOD_REG Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 6722, 6724
Min:
4 [ms] Max:
5000 [ms] Factory setting:
15 [ms]
Description: Sets the smoothing time for the flux setpoint.
p1596[0...n] Field weakening controller integral-action time / Field_ctrl Tn
Access level: 3 Calculated: CALC_MOD_CON Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 6723, 6724
Min:
10 [ms] Max:
10000 [ms] Factory setting:
300 [ms]
Description: Sets the integral-action time of the field-weakening controller.
r1598 CO: Total flux setpoint / Flux setp total
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: PERCENT Dynamic index: -
Unit group: - Unit selection: - Function diagram: 6714, 6723,
6724, 6725, 6726
Min:
- [%] Max:
- [%] Factory setting:
- [%]
Parameters
7.3 Parameters
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
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