Max. Torque Current" Modes 19.8 At The Asynchronous Motor  A) Field Current Dependence (No External Total Current Limit Is Assumed).  B) External Total Current Limit Dependence (Field Weakening Is Not Assumed) - Baumuller b maXX BM3000 Operating Manual

4.4
Configuration
loading mode standard
isqMax
19.8
=
LT-Imax-act
0
0
isd-act
47.2
Isd-Lim 146.12
Isd-nom
0
a)
0
Figure 70:
19.9
Field current preset value
At an asynchronous machine and if the "Permanent field current" field weakening type
is set
Z47.2–
and flux controllers are deactivated. For example here the magnetizing current of the
ASM at the measuring point can be entered.
However, the required field current can differ or be lower at field weakening as well as
greater when magnetizing. If the field weakening type was set "at the voltage limit"
(Z142.1–
If a synchronous machine is operated in field weakening here a negative current value
must be entered. At a synchronous machine and if the field weakening type "permanent
field current " is set
be preset (Isd-set value
weakening controller is deactivated. For example here the required field current at maxi-
mum speed and torque can be entered. The required field current amplitude however can
differ from that value if the speed and torques are lower than the maximum values. If the
field weakening type "at the voltage limit" is set
>19.9<
field weakening characteristic.
122 Parameter manual b maXX BM3000
Document no.: 5.12001.07
of 820
= LT-Imax
2 2
-
isd-set
N
n [min ]
N
N 107.7
n [min ]
N
"Max. torque current" modes 19.8 at the asynchronous motor 
a) Field current dependence (no external total current limit is assumed). 
b) External total current limit dependence (field weakening is not assumed).
(Z142.1– bit 0 = 1) then any field current is permanently preset (lsd set value
= Field current preset value >19.9<). This way the field weakening controllers
bit 0 = 0) the parameter
((Z142.1–
Z47.2–
imposes a field current limit to the field weakening controller and the controlled
loading mode ASM-isdMax
isqMax
19.8
0
0
-1
LT-Imax-act
19.5
LT-Imax 19.6
0
b)
0
-1
>19.9<
has no meaning for the ASM.
bit 0 = 1) here any negative field current can permanently
= Field current preset value >19.9<). This way the field
(Z142.1–
current mode
= LT-Imax
2
=
-
LT-Imax-act isd-set
2
-
=
LT-Imax-act Isd-Lim
5000_0350_rev01_int
external
drive current limit
bit 0 = 0) then the parameter
Baumüller Nürnberg GmbH
2
2
t
t