Siemens SINAMICS S150 - Page 340

SINAMICS S120
Engineering Information
SINAMICS Engineering Manual – November 2015
Ó Siemens AG
340/528
Booksize format, pulse frequency 4.0 kHz, closed-loop torque control
Servo Control Vector Control Notes
Asynchronous
motor
(Standard)
Standard asynchronous motors are
not designed for operation in
servo control mode
1LE1
without encoder
1LE1
with incremental
encoder 1024 S/R
Controller cycle
250 ms 250 ms
Total rise time
(without delay)
2,5 ms 1,6 ms With encoderless operation in speed
operating range 1:10, with encoder from
50 rpm up to rated speed
Characteristic
angular frequency -
3 dB
200 Hz 300 Hz With encoderless operation in speed
operating range 1:10.
The dynamic response is enhanced by
an encoder feedback..
Torque ripple
2,5 % of M
N
2,0 % of M
N
With encoderless operation in speed
operating range 1:20, with encoder from
20 rpm up to rated speed
Torque accuracy
±5.0 % of M
rated
±5.0 % of M
rated
Measured value averaged over 3 s.
With motor identification and friction
compensation; compensation of
temperature effects by means of
KTY84 / PT1000 and mass model.
In torque operating range up to ± M
N
.
Additional inaccuracy of approx. ±2,5 %
in field-weakening range.
Speed operating range 1:50 referred to
rated speed.
Booksize format, pulse frequency 4.0 kHz, closed-loop speed control
Servo Control Vector Control Notes
Asynchronous
motor
(standard)
Standard asynchronous motors are
not designed for operation in
servo control mode
1LE1
without encoder
1LE1
with incremental
encoder 1024 S/R
Controller cycle
250 ms 250 ms
Total rise time
(without delay)
20 ms 12 ms With encoderless operation in speed
operating range 1:10, with encoder from
50 rpm up to rated speed
Characteristic
angular frequency -
3 dB
35 Hz 60 Hz With encoderless operation in speed
operating range 1:10.
The dynamic response is enhanced by
an encoder feedback..
Speed ripple see Note see Note Determined primarily by the total
moment of inertia, the torque ripple and
the mechanical design in particular. It is
therefore not possible to specify a
generally applicable value.
Speed accuracy
0,05 x f
slip
< 0,001 % of n
N
Without encoder:
Determined primarily by the accuracy of
the model calculation of the torque-
producing current and the accuracy of
the rated slip of the asynchronous motor
as given in table "Typical slip values"
(see below).
In speed operating range 1:50 and when
temperature evaluation is active.
Typical slip values for standard and trans-standard asynchronous motors
Motor power Slip values Note
< 1 kW 6.0 % of n
rated
e.g. motor with 1500 rpm: 90 rpm The 1PL6 / 1PH7 / 1PH8 compact
asynchronous motors are very
similar to standard asynchronous
motors with respect to their slip
values.
< 10 kW 3.0 % of n
rated
e.g. motor with 1500 rpm: 45 rpm
< 30 kW 2.0 % of n
rated
e.g. motor with 1500 rpm: 30 rpm
< 100 kW 1.0 % of n
rated
e.g. motor with 1500 rpm: 15 rpm
> 500 kW 0.5 % of n
rated
e.g. motor with 1500 rpm: 7.5 rpm