Siemens SINAMICS G115D

Example
Examples Possible solution
Setup mode: The machine operator must enter the dangerous
area of a machine and manually introduce material into a ma‐
chine part.
• Select SLS in the converter via PROFIsafe or use it always
active.
• The converter limits and monitors the speed of the ma‐
chine part.
The maximum speed of a conveyor below should be safely limi‐
ted for personnel protection.
Further information
Expansion of the SLS function to include several SLS levels:
• The speed monitoring of the SLS function can be extended to include a maximum of 4
di󹪜erent SLS levels.
• The converter requires additional safety-related signals to select an SLS level and to signal
back which SLS level is active.
4FMFDU4-4
4FMFDU4-4-FWFM
4-4JTBDUJWF
4-4-FWFMJTBDUJWF
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/,0,7
Figure7-2 SLS Level sign
It is only possible to select SLS levels via PROFIsafe.
The switchover from a higher SLS level2 to a lower SLS level1 is described below.
Table 7-2 Switching over from SLS level 2 to SLS level 1
 Safely Limited Speed (SLS) Standard converter functions linked
with SLS
1. The converter signals "SLS level 2 is active" via the safe‐
ty-related PROFIsafe communication.
The converter limits the speed setpoint to
values below SLS level 2.
2. The converter recognizes the selection of SLS level 1 via
secure PROFIsafe communication.

3. SLS allows a motor to reduce its possibly inadmissibly
high speed within a de󹪝ned time – or to reduce it along
a de󹪝ned braking ramp.
The converter limits the speed setpoint to
values below SLS level 1.
If the motor rotates faster than the SLS
monitoring value, then the converter
brakes the motor along the OFF3 ramp.
4. The converter monitors the absolute actual speed
against SLS level1.
The converter signals "SLS level 1 is active" via secure
PROFIsafe communication.
The converter limits the speed setpoint to
values below SLS level 1.
Advanced commissioning
7.16Safely Limited Speed (SLS)
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA 249