Siemens SINAMICS S120 Manual page 42

SINAMICS S120 Fail-Safe Drives
Especially note the following settings for Drive 2:
Enter the adjacent values in the
"Safe stops" screen form.
Select the delay time SS1 → Pulse
cancellation (p9556) so that when
the drive decelerates from the maxi-
mum speed of the application down
to standstill (zero speed) this time is
not exceeded. The value of this pa-
rameter depends among other things
on the load moment of inertia.
Set the shutdown speed SS1
(p9560) to n = 0/min.
In the screen form "Safely limited
speed" - enter the maximum limit
speed, which is permissible when the
safety door is open. Only use stage 1
for the speed monitoring function.
Further, the stop response – that is
initiated when the limit value is ex-
ceeded – should be selected.
The drive speed must be below the
limit value n_max. within the delay
time "Select SLS -> SLS active"
(p9551).
To save all of the changes, click on
"Entire project".
You can operate the drives when the Emergency Stop has been deselected
if you have performed the safety commissioning for all drives, then.
I DT Safety Integrated Page 42/43
Entry ID: 28424136
MC-FE-I-005-V11-EN