Siemens Sinumerik 840D sl Function Manual page 158

Safety functions integrated in the system/drive
6.5 Safely reduced speed (SG)
Table 6-13 Explanation of the figure, continued
Time Explanation
t Time required to bring the axis to a standstill.
7
This time and thus the residual distance traveled by the axis is determined by the axis design
(motor, mass, friction, ...) and the configured stop response (STOP C is faster than STOP D).
Note:
Each axis must be measured during commissioning (start--up) to determine the distance that it travels
between the limit switch being violated and it coming to a standstill.
Configurable SG specific stop responses
Using the configurable SG--specific stop response, a suitable braking behavior can
be set for every SG stage in--line with the application when the particular speed
limit value is exceeded.
For example, when:
SETTING--UP, the SG stage SG2 can be active with the configured stop response
STOP C and
in the AUTOMATIC mode, the SG stage SG4 with the configured stop response
STOP D.
Activation
The function is active, if MD / parameter 36961/p9561
$MA_SAFE_VELO_STOP_MODE = 5 / SI Motion SLS (SG) stop response
(Control Unit) = 5.
Setting the configurable SG- -specific stop responses
The SG--specific stop responses can be set using the following machine data:
for 840D sl:
MD36963 $MA_SAFE_VELO_STOP_REACTION[n]
for SINAMICS S120:
p9563[0...3] SI Motion SLS(SG)--specific stop response (Control Unit)
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
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