Siemens SINAMICS S120 Function Manual page 121

Subject
Connectable motors
Position interface
via PROFIdrive for higher-level
motion control
Encoderless
speed control
Motor identification
(third-party motors)
Speed controller optimization
V/f control
Encoderless
closed-loop torque control
Field-weakening range for
induction motors
Maximum
output frequency
with closed-loop control
Note:
The derating characteristics in the Equipment Manuals must be carefully observed!
Max. output frequency when using dv/dt and sine-wave filters 150 Hz!
Reaction in operation at the
thermal
limit of the motor
Speed setpoint
channel (ramp-function
generator)
Parallel connection of power
units
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Servo
Synchronous servomotors
Induction motors
Torque motors
Yes
Yes (from 10 % rated motor
speed)
Yes
Yes
Diagnostic mode
No
<= 16 * field-weakening
threshold speed (with encoder)
<= 5 * field-weakening threshold
speed (without encoder)
1300 Hz with 62.5 μs / 8 kHz
650 Hz with 125 μs / 4 kHz
300 Hz with 250 μs / 2kHz
Reduction in the
current setpoint or shutdown
Optional (reduces the number of
drives from 6 to 5 Motor
Modules with a sampling time
for current controller of 125
μs/speed controller 125 μs)
No
Vector control
3.18 Variable signaling function
Vector
Induction motors
Synchronous motors (incl.
torque motors)
Reluctance motors (only for V/f
control)
Separately excited synchronous
motors
(only for closed-loop control with
encoder)
Note:
Synchronous motors of
series 1FT6, 1FK6 and 1FK7
not included
Yes
Yes (from standstill or 2% rated
motor speed)
Yes
No, only pre-assignment
of parameters
Yes (various characteristics)
Yes (open-loop control at low
speeds)
<= 5 * rated motor speed
300 Hz with 250 μs / 4 kHz
or with 400 μs / 5 kHz
240 Hz with 500 μs / 4 kHz
Reduction in the pulse
frequency and / or the current
setpoint or shutdown (not
applicable with parallel
connection / sine-wave filter)
Standard
Booksize:
No
Chassis:
Yes
121