Siemens SINUMERIK 840D sl Function Manual page 155

05.08
Table 6-13 Explanation of the diagram
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.
Activating
The function is active if the MD/parameter 36961/p9561:
$MA_SAFE_VELO_STOP_MODE = 5 / SI motion SLS (SG) stop response (Con-
trol 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:
MD 36963: $MA_SAFE_VELO_STOP_REACTION[n]
for SINAMICS S120:
p9563[0...3] SI motion SLS(SG)–specific stop response (Control Unit)
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Safety Functions Integrated in the System/Drive
6.5 Safely reduced speed (SG)
6-155