Safely Limited Speed (Sls) - Siemens Sinamics S110 Function Manual

Features
● The drive remains in the closed-loop control mode.
● A programmable standstill tolerance window is available.
● STOP B is the stop response after SOS has responded
Overview of important parameters (see SINAMICS S110 List Manual)
● p9301 SI motion enable safety functions (Power Module)
● p9501 SI motion enable safety functions (Control Unit)
● p9330 SI motion standstill tolerance (Power Module)
● p9530 SI motion standstill tolerance (Control Unit)
● p9351 SI motion SLS changeover delay time (Power Module)
● p9551 SI motion SLS(SG) changeover delay time (Control Unit)
● r9722.0...15 CO/BO: SI Motion integrated drive status signals
8.5.4

Safely Limited Speed (SLS)

Description
The "Safely Limited Speed" (SLS) function is used to protect a drive against unintentional
high speed. This is achieved by monitoring the current drive speed up to a switched speed
limit.
SLS is used to prevent any unintentional movements outside the valid high limit. Limits must
be specified based on results of the risk analysis. It is possible parameterize up to 4 different
speed values.
The speed limit is activated once SLS has been selected and after the delay time
(p9351/p9551) has elapsed. If a lower speed limit is selected, the drive must be decelerated
to a speed below the new limit (e.g. by the controller) within this delay time. A delay time is
not set if a higher speed limit is selected.
Drive functions
Function Manual, 10/2008, 6SL3097-4AB10-0BP0
Note
The range of the tolerance window should be oriented on the default standstill monitoring
limit and be slightly higher than this limit.
Activation of the default monitoring functions may otherwise not be possible.
Note that safe position monitoring within a single-encoder system only works at a rough
resolution (4 x pulses per revolution) (see "Safe actual value acquisition".
Safety Integrated Functions
8.5 Extended Functions
313