Epos And Safely-Limited Speed - Siemens SINAMICS S120 Function Manual

Safety Integrated Extended Functions
5.6 Safely-Limited Speed (SLS)
5.6.3

EPOS and Safely-Limited Speed

When using the EPOS positioning function, if a Safely-Limited Speed monitoring (SLS) is to
be used at the same time, then EPOS must be informed about the activated speed
monitoring limit, as otherwise this can be violated by the setpoint input from EPOS. Further,
this violation can cause the SLS monitoring to stop the drive - therefore interrupting the
intended motion sequence.
With its parameter p9733, the SLS function provides a setpoint limit value which, when taken
into account, prevents the SLS limit value from being violated.
This means that the setpoint limit value in p9733 must therefore be transferred to the input
for the maximum setpoint speed/velocity of EPOS (p2594) in order to prevent an SLS limit
value violation as a result of the EPOS setpoint input.
Overview of important parameters (see the SINAMICS S120/150 List Manual)
● p2593 CI: EPOS LU/revolution LU/mm
● p2594 CI: EPOS maximum speed, externally limited
● r9733(0,1) CO: SI Motion setpoint speed limit effective
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Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Safety Integrated