1PH7 induction motors (Machine tools)
Configuration Manual, (APH7W), 04/2009, 6SN1197-0AD72-0BP0
85
Technical data and characteristics
4
4.1
4.1
Mode of operation and characteristics
A constant torque M
N
is available from standstill up to the rated operating point. The
constant-power range begins from the rated operating point (see P/n characteristic).
Induction motors have a high overload capacity in the constant power range. For some
induction motors, the overload capacity is reduced in the highest speed range.
At higher speeds, i.e. in the constant power range, the maximum available torque M
max
at a
specific speed n is approximated according to the following formula:
0>1P@
PD[
3>N:@෬
PD[
Q>USP@
3>N:@ ෬3
PD[
1
For main spindle applications, the constant power range used to machine a workpiece with
constant cutting power is extremely important. The required drive converter power can be
reduced by optimally utilizing the constant power range.
The following limits and characteristics apply as basis for all induction motors fed from drive
converters.
6
6
6
6
30
5DWHG
RSHUDWLQJSRLQW
9ROWDJHOLPLWLQJFKDUDFWHULVWLF
0HFK
VSHHGOLPLW
Q>USP@
Q
1
Q
V
Q
0D[
Figure 4-1
Power characteristics, limits and curves; torque-speed diagram
Содержание SINAMICS S 1PH7
Страница 1: ...SINAMICS Configuration Manual 04 2009 1PH7 Induction Motors for Machine Tools SINAMICS S s ...
Страница 2: ......
Страница 12: ...Preface 1PH7 induction motors Machine tools 12 Configuration Manual APH7W 04 2009 6SN1197 0AD72 0BP0 ...
Страница 16: ...Table of contents 1PH7 induction motors Machine tools 16 Configuration Manual APH7W 04 2009 6SN1197 0AD72 0BP0 ...
Страница 243: ......