Baumuller b maXX BM5800 - Configuration; Power Unit

Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
61
of 814
3
3.4 Configuration
3.4.1 Power unit
All the power unit related data are divided into two groups. The first group includes the
so-named power unit characteristics which are shown in parameter group 129 and cannot
be written to.

The power unit has a non-volatile memory which holds the power unit characteristics.
When the controller is initialized, these data are read out and transferred to the corre
-
sponding parameters in group 129.
The second group, parameter group 130, contains all the other power unit working data.
These parameters represent either constantly changing physical quantities or certain set
-
tings which generally can be altered.
Detection of a mains failure
A mains failure is detected with the monitoring of the DC link voltage. The voltage thresh-
old for the detection of a mains failure is settable (Z130.38–).
Behavior at mains failure
The drive can be configured that operation is possible at a mains failure for a set time
(
Z130.25–). Different kinds of behavior can be set (see Z130.10–):
– Disable only motor operation (generator operation is enabled, field current is further
supplied)
– Normal operation (motor and generator operation): Normally this option makes only
sense at a DC link combination if another axis feeds back power to the DC link.
– Disabling and automatic restart: The pulses are inhibited in case of detected mains
failure. The drive changes to "Switch-on inhibit (1)" state and coasts down. If the time
of the mains failure is shorter than the set Mains failure delay (
Z130.25–), the drive
restarts automatically. The drive changes automatically in the "Operation enabled"
state again.
Figure 31: Output frequency dependent limit of the maximum drive current
From controller firmware 01.13 the peak current derating in parameter Z138.32– is pre-
sented and signalized in the parameter Z138.8– bit 6.
10 Hz
50
100
0
5000_0326_rev01_int
%
Hz
Max. drive current available P19.5
Output frequency
Output peak
current P6.25