Configuration
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
142
of 820
4.4
Other torque current limits are available as well: Z138.2–, Z138.3–, Z138.14– and the
torque current limit generated by the torque limit Z138.22–.
Other torque current limits are available, as well: Z138.18–, Z138.30–, Z114.5– and
Z114.6–. Furthermore, the motor-operated torque current can be disabled due to power
failure (refer to Z138.10– bit 1).
The strongest limit is effective. The definite upper and lower torque current limit are dis-
played in Z138.6– and Z138.7–.
In comparison with the symmetrical, cyclic torque current limit (Z138.14–), the 138.15
can not be written cyclical. However, it can be saved and is subject to the hysteresis
(
Z138.4–) when defining the quadrant.
Standardization:
100% = Max. torque current Z19.8–
138.16 Speed threshold for breakdown torque limit
Operating speed n
K
that limits the maximum torque current by the breakdown limit l
k,Max
Z138.18– instead of the set max. torque current, l
sq,Max
Z19.8– as follows:
See ZTorque Current Limiting– on page 470 and see also Factor for breakdown torque
Z138.17–.
138.17 Factor for breakdown torque
This factor is used to adjust the Ud voltage limit at the breakdown torque that is used to
calculate the "lsq limit breakdown torque" (
Z138.18–) and the threshold speed break-
down torque limit (Z138.16–).
NOTE!
The parameter must continuously be understood as the percentage set of the "Max.
torque current"
Z19.8–. The parameter can be entered and displayed in ampere (this
is demanded as an auxiliary setting) at ProDrive. The value which was entered in am-
pere however can change during the operation because the reference value can
change because of the field weakening or the external total current limit. See param
-
eters Z19.8– and Z138.1– as well as the chapter ZTorque Current Limiting– on
page 470.
I
KMax
n
K
n
act
---------
I
sq Max
=
NOTE!
As the "Max. torque current" Z19.8– dependent of the field weakening or the external
total current limit can change in the operating process, the threshold speed value of
138.16 can change, as well. Refer to the parameters
Z19.8– and Z138.1–.
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