Siemens Sinamics S120 Function Manual page 162

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Safety devices
When the appropriate safety devices are implemented (e.g. protective doors), it can be
assumed that running machinery will not pose any risk to personnel. The user is therefore
only informed that forced dormant error detection (test stop) is due by an alarm, which
requests the user to perform forced dormant error detection (test stop) at the next possible
opportunity.
Examples of when forced dormant error detection (test stop) must be performed:
● When the drives are at a standstill after the system has been switched on (POWER ON).
● Before the protective door is opened.
● At defined intervals (e.g. every eight hours).
● In automatic mode (time and event dependent).
Not e
Requirements
STO is triggered when a test stop is carried out for the Safety functions. It is not permissible
that STO is selected before selecting the test stop.
When blocksize Power Modules are used, the test stop must be triggered under controlled
standstill conditions (speed setpoint setting 0, current is flowing through the motor).
Forced dormant error detection (test stop) F-DI/F-DO of TM54F
An automatic test stop function is available for forced dormant error detection (test stop) to
test the F-DI/F-DO.
To ensure that the test stop function of the TM54F can be used, the F-DIs that are used
must be interconnected according to the following wiring example. The digital inputs of
F-DI 0 to F -DI 4 must connected to the "L1+" power supply. The digital inputs of F-DI 5 to
F-DI 9 must connected to the "L2+" power supply.
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Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated