Siemens Sinumerik 840D sl Function Manual page 118

Safety functions integrated in the system/drive
6.2 Safe operating stop (SBH)
v
SGn
vact
SGE "SBH deselection"
SGn is active
Figure 6-3 Timing when SBH is selected from SG
Deselecting SBH
Safe operating stop can be deselected using SGE "SBH/SG deselection" (= "1"
signal); this results in a general deactivation of SBH and SG. The SBH function is
also deselected when the SG function is selected using the SGE "SBH deselec-
tion".
Note
The delay time must be selected as a function of the distance to the hazardous
location. The speeds to be taken into account in this respect are stipulated in
Standard DIN EN ISO 13855.
Configuring NCK- -SGAs
The NCK--SGA "SBH active" is configured using the following machine data:
for 840D sl
MD36981 $MA_SAFE_SS_STATUS_OUTPUT
Configuring NCK- -SGEs
for 840D sl
MD36971 $MA_SAFE_SS_DISABLE_INPUT
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
a)
a) Braking is initiated
Delay time, speed changeover
Braking time
Timer is active
t
SBH is active
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