Siemens SINAMICS S120 Function Manual page 85

Subject
Connectable motors
Position interface via PROFIdrive
for higher-level motion control
Encoderless speed control
Motor data identification
Speed controller sampling time op‐
timization
U/f control
Encoderless
Torque control
Field-weakening range for induction
motors
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
5.1 Comparison between servo control and vector control
Servo control
● Synchronous servomotors
● Permanent-magnet synchronous
motors
● Induction motors
● Torque motors
● Linear motors
Yes
Yes, as of 10% rated motor speed, open-
loop controlled operation below this
Yes
Yes
Yes
No
≤ 16% field weakening operation speed
(with encoder)
≤ 5% field weakening operation speed
(without encoder)
Vector control
● Synchronous motors (including torque
motors)
● Permanent-magnet synchronous
motors
● Induction motors
● Reluctance motors - textile (only for U/
f control)
● Synchronous reluctance motors
● Separately excited synchronous
motors
Note:
Synchronous motors of the 1FT6, 1FK6
and 1FK7 series cannot be connected.
Yes
Yes (for ASM and PMSM from standstill)
Yes
Yes
Yes (various characteristics)
Yes, as of 10% rated motor speed, open-
loop controlled operation below this
≤ 5% rated motor speed
Servo control
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