Siemens SINUMERIK 840D sl Function Manual page 152

Safety Functions Integrated in the System/Drive
6.5 Safely reduced speed (SG)
SG1
SG2
SGEs
for SG1
SGEs
for SG2
Fig. 6-12
Deselecting SG
The SG function can be deselected at any speed by activating the SGE "SBH/SG
deselection".
Warning
!
The delay time must also be selected as a function of the distance to the
hazardous location. The speeds to be taken into account (speed at which
hands/arms are moved to appropriately arrange protective devices/guards) are
specified in Standard DIN EN 999.
6-152
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
v
V1
V2
SG1 is active
Timing when changing–over from a higher to a lower speed limit
a) Braking is started
Delay time, speed changeover
SG2 is active
Braking time
Timer running
© Siemens AG 2008 All Rights Reserved
05.08
t