G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
Basic Functions
362 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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 PROIBUS-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.
For more detailed information about motor speed adjustments, please see:
References:
/HBI/ Manual SINUMERIK 840Di; "Axes and Spindles"
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 5 gear stages are realized in the control.
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.
Note
Velocity adjustment and maximum speed setpoint
Owing to the automatic speed setpoint comparison a velocity adjustment is not necessary
for SINUMERIK 840D sl!
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