Siemens SINUMERIK 840C Installation Instructions Manual page 643

9 Drive Servo Start-Up Application (as from SW 3)
9.2.6 Position control loop (axis and spindle) – measurement parameters (9 basic settings – as from SW 3)
Notes In order to ensure a more gentle machine setting, the lowest possible values
should be set for amplitude and offset. Excessively high input values result in
the output of alarm messages such as "1560 Speed setpoint alarm limit violated".
Following error, speed actual value or position actual value are the quantities
which can be measured. The position setpoint and the active measuring system
are recorded in each case.
D 3rd measuring type: Setpoint ramp
The transient or positioning of the position control in the time range can be as-
sessed with the ramp stimulation function. If an offset value other than zero is
input, the step change is stimulated during traversal. The displayed position ac-
tual value does not include this speed offset. The effect of the setpoint smoothing
filter can be checked on the basis of the position setpoint characteristic.
You can select the menu with the parameters for measuring the position control
Meas.
loop with this softkey.
parameter
Note You enter the measurement parameters in the selected display. These parame-
ters are managed internally as configuration data rather than machine data, i.e.
they are not initialized when the machine runs up. Data can be input in two diffe-
rent ways:
S
S
Measurement as for measurement type setpoint step change
parameter settings
Note as for measurement type setpoint step change
9–22
Manual input
Input by loading of an existing, complete data set with the aid of file functions
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09.95
07.97
SINUMERIK 840C (IA)