Configuration
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
144
of 820
4.4
with:
I
sq max
Maximum torque current: to controller FW 01.12 "Max. torque current"
Z19.8–,
from controller FW 01.13 "Max. torque current actual value" Z138.30–, in A
Flux
set
Magnetic flux set value in % Z146.13–
Kt Kt = Kt
corr
· Kt factor, in Nm/A
Kt
corr
Kt correction factor, Z138.23–
Kt factor Motor Kt in Nm/A, Z107.44–
The exact correlation between the torque current and the torque is shown in the torque
monitoring (
ZFig. 174– on page 524).
138.21 Torque display
This parameter displays the torque in Nm, acting within the motor. This is the torque in
the air gap of the motor, which is calculated as follows:
with:
m
i
Torque display in Nm, 138.21
Kt Kt = Kt
corr
· Kt factor, in Nm/A
Kt
corr
Kt correction factor, Z138.23–
Flux
act
Magnetic flux actual value in % Z146.14–
Kt factor Motor Kt in Nm/A, Z107.44–
The exact correlation between the torque current and the torque is shown in the torque
monitoring (
ZFig. 174– on page 524).
138.22 Torque limit symmetric
The same internal motor torque value is limited in both directions. The torque limit is car-
ried out by limiting the torque current set value. The accordant limit at the torque-gener-
ating current l
sqM limit
is calculated as follows:
M
max act
I
sq max
Kt
Flux
set
100
-----------------
=
m
i
Kt
Flux
act
100
-----------------
I
sq act
=
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