Baumuller b maXX BM3000 User Manual

Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
471
of 820
4
At the load modes the parameter Z19.8– shows the possible torque current in depen-
dence of the available total current Z19.6– by deducting the field current. Consequently
the ASM is available of more torque current while having the same total current and an
increased field weakening (less field current). On the one hand the SM is available of less
torque current in the field weakening as in the basic speed range. On the other hand, at
the same time the available torque current reduces if the total current of the device is re
-
duced (e.g. because overload monitoring has responded). The Z19.8– standardized
torque current limits are a part of the possible torque current and therefore load limits. The
ampere value of these limits will change at field weakening and external total current limit.
At the current mode the parameter Z19.8– is set by the maximum total current of the drive
Z19.5– and is independent of external total current limit or field weakening. The value in
ampere of these limits will not change at field weakening and external total current limit.
The operation of the standardization and the limit modes are described from ZFig. 151–
on page 471 to ZFig. 155– on page 475, whereat lsqLim stands for one of the torque cur-
rent limits Z138.2–, Z138.3–, Z138.14– or Z138.15–.
Figure 151: Torque current limit "lsqLim" at the "Standard load mode" of the synchronous motor (138.1
bit
3 = 0).
a) Dependent of the field current (an external total current limit is not assumed). 
b) Dependent of external total current limit (field weakening is not assumed)
5000_0351_rev01_int
t
LT-Imax
19.6
n [min ]
N
N
-1
t
[A]
n [min ]
N
N
-1
0
n [min ]
N
N
-1
t
100% 100%
IsqLim IsqLim
IsqLim
IsqLim
107.7
[A]
isq
[A]
isq
[A]
LT-Imax
19.6
LT-Imax
19.6
a) b)
isq 100
Isq
loading
[%]
Isq
loading
[%]
isqMax
19.8
isqMax 19.8
LT-Imax-act
2
isd-set
2

=
isqMax 19.8
isd-set
i drive
LT-Imax-act 19.5
external
drive current limit

Baumuller b maXX BM3000 Specifications

General

Brand	Baumuller
Model	b maXX BM3000
Category	Measuring Instruments
Language	English