Siemens Sinamics S120 Function Manual page 72

Servo control
Subject
Sampling time, current controller /
sampling time, speed controller /
pulse frequency
Note:
Further information about the sampling conditions is contained in the "Rules for setting the sampling time" subsection later
in this manual.
Connectable motors
Position interface via PROFIdrive
for higher-level motion control
Encoderless speed control
Motor identification
(third-party motors)
Speed controller optimization
U/f control
Encoderless
closed-loop torque control
Field-weakening range for
induction motors
70
Servo control
Booksize:
•
31.25 μs / 31.25 μs / ≥ 8 kHz
(factory setting, 8 kHz)
• Blocksize:
31.25 μs / 31.25 μs / ≥ 8 kHz
(factory setting, 8 kHz)
Chassis:
•
Frame size Fx :
250 μs / 250 μs / ≥ 2 kHz
(factory setting, 2 kHz)
Frame size Gx:
125 μs / 125 μs / ≥ 4 kHz
Synchronous servomotors
•
Permanent-magnet synchronous
•
motors
Induction motors
•
Torque motors
•
Yes
Yes, from 10 % rated motor speed,
open-loop controlled operation below
this
Yes
Yes
Yes
No
≤ 16 field-weakening threshold speed
(with encoder)
≤ 5 field-weakening threshold speed
(without encoder)
Vector control
Booksize:
•
250 μs / 1000 μs / ≥ 2 kHz
(factory setting 4 kHz)
500 μs / 2000 μs / ≥ 2 kHz
(factory setting, 4 kHz)
Blocksize:
•
250 μs / 1000 μs / ≥ 2 kHz
(factory setting 4 kHz)
500 μs / 2000 μs / ≥ 2 kHz
(factory setting, 4 kHz)
Chassis:
•
≤ 250 kW:
250 μs / 1000 μs / ≥ 2 kHz
> 250 kW:
400 μs / 1600 μs / ≥ 1.25 kHz
690 V:
400 μs / 1600 μs / ≥ 1.25 kHz
Synchronous motors (including torque
•
motors)
Permanent-magnet synchronous
•
motors
Induction motors
•
Reluctance motors (only for V/f control)
•
Separately-excited synchronous motors
•
Note:
Synchronous motors of the 1FT6, 1FK6
and 1FK7 series cannot be connected.
Yes
Yes (for ASM and PEM from standstill)
Yes
Yes
Yes (various characteristics)
Yes, from 10 % rated motor speed, open-
loop controlled operation below this
≤ 5 · rated motor speed
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions