Siemens SINUMERIK 840D sl Function Manual page 366

Data descriptions
9.1 Machine data for SINUMERIK 840D sl
36944
MD number
Default value: 0.01
Change becomes effective after: POWER ON
Data type: DOUBLE
Meaning:
Special cases, errors,...
36945
MD number
Default value: 0.0
Change becomes effective after: POWER ON
Data type: DOUBLE
Meaning:
Special cases, errors,...
corresponds with ...
Additional reference
36946
MD number
Default value: 20 - for mm/min, inch/min
default value: 20. for rpm
Change becomes effective after: POWER ON
366
$MA_SAFE_REFP_POS_TOL
Tolerance, actual value comparison (referencing)
Min. input limit: 0
This machine data specifies the tolerance for checking the actual values after referencing (for
incremental encoders) or when powering-up (for absolute encoders).
An absolute actual axis position is determined by referencing. A second absolute actual posi‐
tion is calculated from the last stop position that was saved prior to the control being powered-
down and the distance traversed since power-on. The control system checks the actual values
after referencing on the basis of these two absolute positions, the traversed distance and this
machine data.
The following factors must be taken into consideration when calculating tolerance values:
Backlash, leadscrew errors, compensation factors (max. compensation values for SSFK, sag
and temperature compensation), temperature errors, torsion (2-encoder system), gearbox
tolerance for selector gearboxes, coarser resolution (2-encoder system), oscillating distance/
range for selector gearboxes.
Note:
If the two absolute actual positions deviate from one another by more than the value set in
this data - with a valid user agreement - then Alarm 27001 is output with Fault code 1003 and
a new user agreement is required for referencing.
$MA_SAFE_VELO_X_FILTER_TIME
Filter time n<n
x
Min. input limit: 0.0
Sets the filter time for generating the SGA n<n
The filtering must be activated by setting bit 16 in MD36901 $MA_SAFE_FUNCTION_ENA‐
BLE to 1.
With default value 0, filtering is not active.
By parameterizing a filter time not equal to 0, the response time of the SGA n<n
MD36946 $MA_SAFE_VELO_X
MD36947 $MA_SAFE_VELO_X_HYSTERESIS
/FBSIsl/ see Chapter "Safe speed range detection "n<nx" (Page 148)"
$MA_SAFE_VELO_X
Speed limit n<n
x
Min. input limit: 0
min. Input limit: 0
Protection level: 7/2
Protection level: 7/2
.
x
Protection level: 7/2
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Max. input limit: Linear axis 1mm/inch,
Max. input limit: Rotary axis 36 degrees
Unit: mm, inches, degrees
Max. input limit: 0.5
Unit:ms
Max. input limit: 1000
max. Input limit: 1000.
Unit: mm/min, inch/min,
rev/min
Safety Integrated
increases.
x