Baumuller b maXX BM5800 - Page 495

Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
495
of 814
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142.8 Voltage threshold for field weakening
Set point of the voltage threshold from which the field weakening controller can be acti-
vated.
The final threshold to activate the field weakening controller also depends of other param-
eters (Z142.15– and Z142.6–) and is displayed in the parameter Z142.23–.
The parameter unit is [V], line-to-line voltage effective.
142.9 Speed threshold for field weakening
Set point of the speed threshold from which the field weakening begins, if bit 1 of param-
eter Z142.1– Field weakening mode is set.
142.10 Smoothing time PWM total voltage
Time constant of the PT1 filter for parameter Z142.7–.
If the time constant is less than 800 µs the filter is deactivated.
142.12 Field controller due to speed
The field weakening factor after the speed is the ratio of threshold speed / actual speed
value whereat the field is reduced if the actual speed value > threshold speed, whereat
Threshold speed = "Rated speed" Z107.7–; (Z142.1– bit 1 = 0)
Threshold speed = "Speed threshold field weakening" Z142.9–; (Z142.1– bit 1 = 1)
The range of values is between 0 and 1.
Of importance only if the field weakening type was set at the voltage limit (Z142.1–
bit 0 = 0).
142.13 Field weakening controller output
Output after the field weakening controller.
The range of values is between 0 and 1.
Of importance only if the field weakening type was set at the voltage limit (Z142.1–
bit 0 = 0).