Safe Speed Range Detection "N<Nx - Siemens SINUMERIK 840D sl Function Manual

Safety functions integrated in the system/drive
7.6 Safe speed range detection "n<nx"
Defining machine data
Table 7-8
Limit value
SG1
SG2
SG3
SG4
Table 7-9
Signal
SGE
SG selection bit 1
SG selection bit 0
SG override selection bit 1
SG override selection bit 0
Table 7-10
Override
0
1
2
3
7.6 Safe speed range detection "n<nx"
The safe speed range detection function "n<n
range of a drive. The speed range detection is evaluated on a user-for-user basis, e.g. in so
much that a protective door can only be re-enabled if a spindle that is coasting down has fallen
below a certain speed.
The status signal "n<n
channel compares the actual velocity with a velocity limit that can be adjusted via machine
data (MD36946 $MA_SAFE_VELO_X) - and resulting from this, the SGA "n<n
deleted.
The result of this monitoring function is exchanged between the NCK and drive monitoring
channels and compared crosswise. In order that brief dynamic deviations of the actual velocity
between the monitoring channels does not result in an error being initiated in the crosswise
data comparison, a tolerance band is defined in which the crosswise data comparison does
not immediately result in the above mentioned alarm. Alarm 27001 or 27106 is only output and
148
Supplying the machine data for the velocity limit values
For 840D sl
MD number
36931[0]
36931[1]
36931[2]
36931[3]
Supplying the machine data for the SGE
MD number
36972[1]
36972[0]
36978[1]
36978[0]
Supplying the machine data for the override factors
For 840D sl
MD No.
36932[0]
36932[1]
36932[2]
36932[3]
" is generated through two channels. For this purpose, each monitoring
x
Value Parameter No.
1000 p9531[0]
2000 p9531[1]
4000 p9531[2]
5000 p9531[3]
Assignment
Value Parameter No.
100 p9532[0]
80 p9532[1]
50 p9532[2]
30 p9532[3]
" (SGA "n<n ") is used to safely detect the speed
x x
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
For SINAMICS S120
Value
1000
2000
4000
5000
Value
0401010D
0401010E
04010111
04010112
For SINAMICS S120
Value
100
80
50
30
" is set or
x
Safety Integrated