Siemens SINAMICS G130 Engineering Manual page 339

Booksize format, pulse frequency 4 kHz, closed-loop speed control
Servo Control
Synchronous 1FK7 with
motor resolver R14DQ
125 ms
Controller cycle
Total rise time 3.5 ms
(without delay)
Characteristic 140 Hz
angular frequency
-3 dB
See note
Speed ripple
£ 0.001 % of n
Speed accuracy
Asynchronous 1PH7/1PH8
motor without encoder
125 ms
Controller cycle
12 ms
Total rise time
(without delay)
Characteristic 40 Hz
angular frequency
-3 dB
Speed ripple See note
0.1 × f
Speed accuracy
slip
Typical slip values for standard and trans-standard asynchronous motors
Motor power Slip values
< 1 kW 6.0 % of n
< 10 kW 3.0 % of n
< 30 kW 2.0 % of n
< 100 kW 1.0 % of n
> 500 kW 0.5 % of n
Vector Control
1FT7
1FK7/1FT7 synchronous motors are not
designed for operation in vector control
mode.
125 ms
2.3 ms
250 Hz
See note
£ 0.001 % of n
rated rated
1PH7/1PH8 1PH7/1PH8
with incremental without encoder
encoder 1024 S/R
125 ms 250 ms
5 ms 20 ms
120 Hz 50 Hz
See note See note
£ 0.001 % of n
0.05 × f
rated
e.g. motor with 1500 rpm:
rated
e.g. motor with 1500 rpm:
rated
e.g. motor with 1500 rpm:
rated
e.g. motor with 1500 rpm:
rated
e.g. motor with 1500 rpm:
rated
Engineering Information
1PH7/1PH8
with incremental
encoder 1024 S/R
250 ms
10 ms
80 Hz
See note
£ 0.001 % of n
slip
rated
90 rpm
45 rpm
30 rpm
15 rpm
7.5 rpm
SINAMICS Engineering Manual – November 2015
SINAMICS S120
Notes
With encoderless operation in speed
operating range 1:10, with encoder
50 rpm and above up to rated speed.
In this case, the dynamic response is
determined primarily by the encoder
system.
Determined primarily by the total mass
moment of inertia, the torque ripple and
especially the mechanical configuration.
It is therefore not possible to specify a
generally applicable value.
Determined primarily by the resolution
of the control deviation and encoder
evaluation in the converter. This is
implemented on a 32-bit basis for
SINAMICS.
With encoderless operation in speed
operating range 1:10, with encoder
50 rpm and above up to rated speed.
With encoderless operation in speed
operating range 1:10.
The dynamic response is enhanced by
an encoder feedback.
Servo with encoder is slightly more
favorable than vector with encoder,
as the speed controller cycle with servo
is quicker.
Determined primarily by the total mass
moment of inertia, the torque ripple and
especially the mechanical configuration.
It is therefore not possible to specify a
generally applicable value.
Without encoder:
Determined primarily by the accuracy of
the model calculation for the torque-
producing current and rated slip of the
asynchronous motor (induction motor)
as given in table "Typical slip values"
(see below).
With speed operating range 1:50
(vector) or 1:10 (servo) and with
activated temperature evaluation.
Note
The 1PL6 / 1PH7 / 1PH8 compact
asynchronous motors are very
similar to standard asynchronous
motors with respect to their slip
values.
339/528
Ó Siemens AG