Baumuller b maXX BM2500, Руководство по эксплуатации

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Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
203
of 820
4
123.4
Display max. current
This parameter shows the maximum current during the identification. The value arises
from the lowest value of either the nominal current (
Z
107.9
–
) or 70% of the "Power unit
peak current" (
Z
6.25
–
), or 70% of the "Power unit nominal current" (
Z
6.26
–
) if the over-
load time (
Z
129.22
–
Max. peak current duration) is less than 3 seconds or if the PU over-
load monitoring occurs via temperature model (see Status PU temperature model
Z
175.2
–
).
123.6
Stator resistance measured
This parameter shows the identified stator resistance, including the resistance of the
IGBT and the motor cable. In the case of asynchronous motors, the rotor resistance is not
included. The identified value is calculated to 20°C if a temperature sensor to access the
motor temperature is connected.
The parameter 123.6 can be used in dependence of
Z
123.10
–
for motor control.
123.7
Inductance measured
This parameter shows the identified inductance of the motors. Conversion from motor da-
ta: SM: sig_Ls
= L
m
+ L
s

;
ASM: sig_Ls = L
s

+ L
r

.
The following pictures show the equivalent circuits for the asynchronous machine (ASM)
and the synchronous machine (SM) at standstill.
Figure 91: Equivalent circuits of ASM (left) and SM (right) at standstill
The parameter 123.7 can be used in dependence of
Z
123.10
–
for motor control.
r
s
: Stator resistance
r
r
: Rotor resistance (on the stator side)
L
s

: Leakage inductance of stator
L
r

: Leakage inductance of rotor (on stator side)
L
m
: Magnetizing inductance (main inductance = L
H
)