Siemens SINAMICS S120 Function Manual page 303

Test stop for Basic Functions
Figure 6-10
To parameterize the forced checking procedure (test stop) for the Basic Functions, proceed
as follows:
1. Enter the interval for performing dynamization and testing the safety shutdown paths in
the "Timer" (p9659) field.
Within the parameterized time, the "STO" function must be selected and deselected at
least once. The monitoring time is reset at every STO deselection.
2. Connect the "Test stop required" (r9773.31) signal sink to a digital output or to a bit in the
status word of the fieldbus.
Note
Resetting the timer of the Basic Functions
If the associated forced checking procedure (test stop) is performed, while simultaneously
using the Extended/Advanced Functions, the Basic Functions timer is also reset.
While STO is selected via the Extended/Advanced Functions, the terminals for the
selection of the Basic Functions are not checked for discrepancy. This means that the
forced checking procedure (test stop) of the Basic Functions must always be performed
without the selection of STO or SS1 via the Extended/Advanced Functions. It is otherwise
not possible to verify the correct control through the terminals.
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Example: Basic Functions
Commissioning
6.8 Commissioning: Basic procedure
301