Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
111
of 820
4
4.4.2 Motor
4.4.2.1 Motor Identification Plate
Stegmann and Heidenhain encoders provide the option of storing OEM data in their
EEPROM. This memory is used to store the following information in the encoders:
m Notch angle offset
m Machine characteristics
m Encoder characteristics
m Motor ordering code
The data structure of the OEM memory follows the Baumüller standard, as already imple-
mented on the b maXX 4400 and 5200/5300. Thus identification plates can also be read
from encoders which were previously used in b
maXX 4400 and 5200/5300 drives and
conversely.
4.4.2.2 Torque limits
Display maximum torque
The parameter Z138.20– "Max. torque actual value" represents the maximum internal
torque of the motor M
max act
and is proportional to the maximum cross current I
sq max
.
with
I
sq max
Maximum cross current in A: "Max. torque current" Z19.8– to FW 01.12
or "Max. torque current actual value" Z138.30– from FW 01.13
Flux
act
Magnetic actual flux in % Z146.14–
Kt Kt = Kt
corr
· Kt factor, in Nm/A
Kt
corr
Kt correction factor, Z138.23–
Kt factor Motor Kt in Nm/A Z107.44–
NOTE!
If the Kt factor Z107.44– is set to zero, then the torque limit is suspended. This state
is achieved by setting the Nominal power Z107.6– to 0 kW. If the Kt correction factor
Z138.23– is set to zero, then the torque limit limits the cross current to 0 A.
M
max act
I
sq max
Kt
Flux
act
100
-----------------
=