Safely-Limited Speed Without Selection - Siemens SINAMICS S120 Function Manual

4.2.8.3

Safely-Limited Speed without selection

Differences between Safely-Limited Speed with and without selection
● As an alternative to controlling via terminals and/or PROFIsafe, there is also the option to
parameterize the SLS function without selection (see Section "Motion monitoring without
selection (Page 249)").
● The function "SLS without selection" is selected with p9512.4 = 1.
● For "SLS without selection", only one SLS limit value can be parameterized (p9531[0]).
● The stop response is parameterized with p9563[0].
● For Safely-Limited Speed without selection there is no delay time. The function is always
active when operated with encoder. The function is always active at switch on when
operated with encoder.
Switching the motor on and off (without encoder)
The time response and diagnostic options are as follows in this SLS version:
Figure 4-14
"SLS without selection" behaves as follows when switching off and switching on again:
● After switch-off, the motor behaves in accordance with the removed signal (OFF1, OFF2
or OFF3).
● The "safe pulse cancellation" becomes active after the standstill limit is undershot. If a
brake has been parameterized, it is also closed.
● After the ON command, the converter cancels the "safe pulse cancellation" state and the
start procedure is initiated.
● If the minimum current has not been reached after 5 s, the converter returns into the "safe
pulse suppression" state and initiates alarm C01711.
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Time response of SLS without selection (example: Switching the motor on and off
(without encoder))
Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
119