Configuration
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
124
of 814
3.4
Automatic identification
The automatic identification of the Lh-characteristic Z123.33– is started via bit 10 of the
parameter Z146.1– (mode asynchronous machine). At the same time the status Current
presetting of the drive is checked. Nominal speed, speed for Lh identification, nominal
magnetizing current and ramp-up time must be preset. Then it is accelerated to the de
-
sired speed (Z123.39–) with nominal magnetizing current. Thereby a linear ramp calcu-
lated from the ramp-up time is used. Then the motor successively is supplied with a step
size of 1/20 of the nominal magnetizing current at this speed. Thereby the required volt
-
age is measured. As it is estimated that the drive is in idle state, the inductance can be
calculated with the acceptability that the slip = 0.
It is decelerated and the inductances are standardized to nominal inductance and entered
in the table.
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