SINAMICS S120
Engineering Information
SINAMICS Engineering Manual – November 2015
Ó Siemens AG
336/528
Performance features of the CU320-2 Control Unit with firmware 4.3 or higher for SINAMICS S120
Characteristics Servo Control Vector Control V/f-Control Notes
Typical application
· Drives with higly
dynamic motion
control
· Angular-locked
synchronism with
isochronous
PROFIBUS / PROFINET
in conjunction with
SIMOTION
· For use in machine
tools and clocked
production machines
· Speed controlled
drives with high
speed and torque
stability in general
machanical
engineering systems
· Particulary suitable
for asynchronous
motors (induction
motors)
· Drives with low
requirements on
dynamic response
and accuracy
· Multi-motor group
drives, e.g. on textile
machines with
SIEMOSYN motors
Mixed operation of servo control
and vector control is not possible
on a single CU320-2.
Dynamic response Very high High Low Highest dynamic response with
1FK7 High Dynamic synchronous
motors and servo control.
Control modes with encoder Position control /
Speed control /
Torque control
Position control /
Speed control /
Torque control
None SIMOTION D with servo control is
standard for coordinated motion
control.
Control modes without encoder Speed control Speed control /
Torque control
All V/f control modes
With servo for asynchronous
motors (induction motors) only.
With V/f control the speed can be
kept constant by means of select-
able slip compensation.
Asynchronous motor
(induction motor)
Synchronous motor
Torque motor
Linear motor
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
No
No
V/f control (textiles) is recom-
mended for SIEMOSYN motors.
Permissible ratio of motor rated
current to rated current of Motor
Module
1:1 to 1:4 1.3:1 to 1:4 1:1 to 1:12 Maximum control quality in the
case of servo and vector control
up to 1:4. Between 1:4 and 1:8
increasing restrictions as regards
torque and rotational accuracy.
V/f Control is recommended for
< 1:8.
Maximum number of parallel-
connected motors per Motor
Module
4 8 Unlimited in theory Motors connected in parallel must
be asynchronous (induction)
motors with identical power ratings.
With V/f control, the motors can
have different power ratings.
Setpoint resolution
position controller
31 bit + sign 31 bit + sign –
Setpoint resolution
speed / frequency
31 bit + sign 31 bit + sign 0.001 Hz
Setpoint resolution torque 31 bit + sign 31 bit + sign –
Maximum output frequency
(rounded numerical values)
· For current controller clock
cycle / pulse frequency
550 Hz / 650 Hz
1
with 125 ms / 4 kHz
300 Hz
with 250 ms / 4 kHz
300 Hz
with 250 ms / 4 kHz
1
Only with license "High output
frequency" on the CF card
Note limit voltage (2 kV) and use of
VPM Module with synchronous
motors.
· For current controller clock
cycle / pulse frequency
(Chassis frame sizes FX
and GX)
300 Hz
with 250 ms / 2 kHz
160 Hz
with 250 ms / 2 kHz
160 Hz
with 250 ms / 2 kHz
· For current controller clock
cycle / pulse frequency
(Chassis frame sizes HX
and JX)
300 Hz
with 250 ms / 2 kHz
100 Hz
with 400 ms / 1.25 kHz
100 Hz
with 400 ms / 1.25 kHz
Maximum field weakening
· For asynchronous motors
(induction motors)
5 times 5 times 4 times With servo control combined with
encoder and appropriate special
motors, field weakening up to 16
times the field-weakening threshold
speed is possible.
· For synchronous motors
2 times 2 times – These values refer to 1FT7/1FK7
synchronous motors.
Note limit voltage (kE factor) with
non-Siemens motors.
To Next Page
Loading...
