Siemens SINAMICS S120 Function Manual page 37

Safety function Application examples
SLP The drive must not exit the specified position ranges.
SP It is necessary to transmit a "safe position," for example,
in the following use cases:
Safe cam sequencer
•
Calculation of the safe velocity
•
Safety concepts across axes
•
–
Zone concepts
•
–
–
Safe gearbox For a machine equipped with selector gearbox it must
stage switch- be ensured that the switchover is actually performed.
over
SCA It is only permissible that a protective door is opened if a
drive is in a certain position range.
The drive must only be traversed with reduced speed
when it located in a certain position range.
SLA In the setup mode, it is not permissible that the drive
exceeds the permissible acceleration.
Diagnostic function
SBT
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
2.4 Examples of how the safety/diagnostic functions can be applied
Multi-dimensional protection areas
Safe response depending on the position of the
axes
Different reaction to sensors
Application examples
The effect of a brake is reduced through wear.
General information about SINAMICS Safety Integrated
Possible solution
Selection of SLP in the converter; inhibits the
range that is not permitted.
The selection of SP in the converter enables
you to transfer a safe position (i.e. absolute or
relative position) to the higher-level controller
via PROFIsafe.
The "Safe gearbox stage switchover" function
ensures safe switchover between the gearbox
stages.
Select SCA
•
Interlock protective door in response to the
•
SCA feedback signals via PROFIsafe
Select SCA
•
Activate a SLS stage in response to the
•
SCA feedback signals via PROFIsafe
Selecting SLA in the converter. The converter
limits and monitors the acceleration of the
machine.
Possible solution
The diagnostic function "Safe Brake Test
SBT" detects whether a brake is provided the
required braking effect.
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