Siemens SINUMERIK 840D sl Function Manual page 346

G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
Speed setpoint adjustment
SINUMERIK 840D sl
In the case of speed setpoint comparison, the NC is informed which speed setpoint
corresponds to which motor speed in the drive, for parameterizing the axial control and
monitoring. This comparison is carried out automatically.
For PROFIBUS DP drives, alternatively, the manual speed setpoint comparison is also
possible.
● Manual comparison
In the machine data:
MD32250 $MA_RATED_OUTVAL
a value not equal to zero is entered.
Note
Velocity adjustment and maximum speed setpoint
Owing to the automatic speed setpoint comparison a velocity adjustment is not necessary
for SINUMERIK 840D sl!
Maximum speed setpoint
For SINUMERIK 840D sl, the maximum speed setpoint is defined as a percentage. 100%
means maximum speed setpoint or maximum speed for PROFIdrive drives (manufacturer-
specific setting parameters in the drive, e.g. p1082 for SINAMICS).
The output of the spindle speed is implemented in the NC for SINUMERIK 840D sl.
Data for five gear stages are realized in the controller.
These stages are defined by a minimum and maximum speed for the stage itself and by a
minimum and maximum speed for the automatic gear stage changeover. A new set gear stage
is output only if the new programmed speed cannot be traversed in the current gear stage.
With the machine data:
MD36210 $MA_CTRLOUT_LIMIT[n] (maximum speed setpoint)
the speed setpoint is restricted percentage-wise
Values up to 200% are possible.
When the speed is exceeded, an alarm is generated.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions