Safety Integrated - Industry - Siemens

Ex. No.
12 Operating mode "safe speed" (SG)
The signal curves described below require the mode switch to
select "safe speed" (SG) mode.
Time Explanation
t1 Acknowledgement required prior to first start obligatory.
t2 Pressing and keeping dead man switch (DMS=1) pressed
switches the safety relay of the K80 option. The drive
starts with SG.
t3 Opening...
t4 …and closing the (simulated) safety door does not cause
the drive to stop (OUT3=1, n>0).
t5 Releasing the dead man switch (DMS=0)…
t6 …causes a stop and subsequent pulse blocking of the
drive (n=0, K80=0)
t7 Renewed pressing and holding of the dead man switch
(DMS=1) switches the safety relay of the K80 option. The
drive starts with SG.
t8 Activates emergency stop: fast stop is triggered
(OUT3=0).
t9 Pulse blocking through option K80.
t10 Separating drive from network (only for readback error
of option K80).
370 Functional Example No. AS-FE-I-012-V10-EN
Note
As depicted in the time diagram, the drive is only separated
from the network, if the feedback contact of option
K80 causes an error (see time value t10).
Advantage / Customer benefits
■ No standstill monitor necessary.
■ The used speed values for operating modes "normal" and
"safely reduced speed" (SG) can be adjusted easily to the
individual requirements.
■ Use of prefabricated and certified failsafe blocks from the
Distributed Safety library.