Controllers
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
528
of 820
4.7
with
F
2 set
Slip frequency preset value in Hz (displayed in [Inc/Tab] in
parameter Z146.16–)
i
sq set
Torque current set value in A
Flux
set
Set value of the magnetic flux in % Z146.13–
Flux
nom
Nominal flux = 100%
I
sq nom
Motor nominal torque current in A Z19.10–
F
2 Tm act
Slip frequency at Motor nominal torque current and nominal
flux according to the temperature actual value, in Hz Z19.30–.
The slip frequency at the motor nominal torque current and nominal flux according to the
temperature actual value (
Z19.30–) is generated from the temperature compensation
characteristic.
Temperature compensation characteristic
If the motor temperature increases the slip frequency rises. The torque current and the
magnetic flux values remain the same.
The temperature compensation of the slip frequency is made by the slip frequency/tem-
perature support points at the warm as well as the cold motor (Z107.15– to Z107.18–).
The actual slip frequency F
2 Tm act
accordant to the motor temperature actual value
(
Z128.3–) is shown in the parameter Z19.30– and is evaluated as follows:
with:
F
2 Tm act
Slip frequency at nominal torque current and nominal flux
according to temperature actual value, Z19.30–
T
m act
Motor temperature actual value Z128.3–
F
2 cold
Slip frequency at nominal torque current and nominal flux
according to motor cold Z107.15–
F
2 warm
Slip frequency at nominal torque current and nominal flux
according to motor warm Z107.16–
T
m cold
Slip temperature motor cold Z107.17–
T
m warm
Slip temperature motor warm Z107.18–
f
2 set
i
sq set
Flux
set
-----------------
Flux
nom
I
sq nom
--------------------
F
2Tm act
=
F
2 Tm act
F
2 cold
T
m act
T
m cold
–
F
2 warm
F
2 cold
–
T
m warm
T
m cold
–
----------------------------------------
+=
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