Sls With Variable Speed Limit Value; Limitation Of The Speed Setpoint For Sls - Siemens SINAMICS G220 Operating Instructions Manual

Functions
14.12 Safety Integrated
p9604.0...30
r9720.0...15
r9722.0...15
c10026
c10027
c10028
r10356.0...1
14.12.5.2

SLS with variable speed limit value

Overview
The SLS1 limit value is scalable during operation via PROFIsafe.
Requirement
The SLS1 limit value is selected via PROFIsafe.
p9604.9 is set: Transfer of the SLS limit value via PROFIsafe is enabled.
Description of function
The signal S_SLS_LIMIT_A in the PROFIsafe telegram scales the SLS1 limit value.
The S_SLS_LIMIT_A scaling has the value range 1 ... 32767.
The scaled SLS1 limit value is calculated as follows: Scaled SLS1 limit value = S_SLS_LIMIT_A /
32767 · p9531[0]
Before the higher-level control (F-CPU) selects an SLS limit value or changes the SLS1 limit
value, the control must reduce the motor speed according to the changed SLS limit value.
With the scaled SLS1 limit value, too, the SLS2, SLS3 and SLS4 limit values can be selected
with r9720.9 and r9720.10.
An invalid value in S_SLS_LIMIT_A results in the stop response parameterized in p9563[0].
14.12.5.3

Limitation of the speed setpoint for SLS

Overview
For Safely-Limited Speed (SLS), it is useful to limit the speed setpoint with the higher-level
control.
Description of function
The higher-level control receives the value for the required limitation of the speed setpoint from
the Safety Info Channel (SIC) in telegram 700.
672
SI enable
SI control word
SI status signals
SI SLS input terminal
SI SLS limit bit 0 input terminal
SI SLS limit bit 1 input terminal
SI SLS select cause
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
SINAMICS G220 converter