Controllers
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
494
of 814
3.7
142.4 Tn field weakening controller
Reset time of the field weakening controller.
At value 0 the integral part is set to 0 and the field weakening controller works without in-
tegral part.
142.5 Minimum field weak factor
The parameter is without unit and serves as a limit of the field weakening factor Z142.2–
The range of values extends from 0 to 1.
Field weakening factor [Z142.2–] Minimum field weak factor [>142.5<].
Of importance only if the field weakening type at the voltage limit is set (Z142.1–
bit 0 = 0).
See chapter ZField weakening controller– from page 484.
Considering the extreme cases:
Minimum field weak factor = 0 For SM: The parameterized field current
preset value Z19.9– can be reached.
For ASM: The flux set value Z146.13– can
be reduced to 0%
Minimum field weak factor > 0 For SM the parameterized field current
preset value Z19.9– can not be reached.
For ASM the flux set value in % can only be
reduced to 100 * "Minimum field weak
factor".
142.6 Max. total PWM voltage actual value
Display of the maximum total voltage available, that can be generated at an amplitude of
100% PWM (limit of the linear range) from the current DC link voltage
Z130.3–. The max-
imum available total voltage at the motor is smaller due to the dead time voltages.
The field weakening controller requires this parameter.
The unit of the parameter is [V], line-to-line voltage effective.
142.7 PWM total voltage smoothed
Display of the actual required total voltage at PWM (see also Z142.6– and bit 2 of param-
eter Z142.1–). The time constant can be parameterized with Z142.10–.
The parameter is required by the field weakening controller as well as of the breakdown
torque controller.
The unit of the parameter is [V], line-to-line voltage effective.
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