Baumuller b maXX BM5800, Parameter Manual

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Diagnosis
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
684
of 814
3.10
175.1
Mode PU temperature model
The parameter can be changed in the inhibited state, only.

Bit 0:
From controller version V01.09 onwards and important only for devices, which support
the overload monitoring model PU temperature model (see Status PU temperature model
Z
175.2
–
).
If the PWM reduction is released the PWM frequency is halved, if the temperature moni-
toring of the power semiconductors exceed a certain threshold.

Bit 1:
Only of importance if both models of the overload monitoring are existent (availability tem-
perature model:
Z
175.2
–
bit 1 = 1, availability lxt model
Z
175.2
–
bit 2 = 1).
Selection:
0: The temperature model is activated
1: The lxt model is activated
If the device supports both models the lxt model will be active in general (
>
175.1
<
bit 1 = 0).
A change of the overload monitoring model (setting in the parameter list) is valid after the
device was switched on and off again.
Bit no. Meaning
0 PWM reduction mode
0: not enabled
1: enabled
1 Selection of the PU overload monitoring model at availability of the tem-
perature model and the Ixt model:
0: Ixt model is activated
1: Temperature model is activated
15 ... 2 Reserved
NOTE!
Before the PWM reduction can be released the user must assure the following:
m
The drive must operate correctly with the reduced switching frequency (e.g. mea-
suring data of the motor, control quality at reduced current controller band width
a.s.o. must be checked).
m
The drive components must tolerate the reduced switching frequency (e.g. check
motor filter, if it is existing). This is very important, if the PWM frequency is reduced
to 2 kHz.