Siemens SINAMICS S120 Function Manual page 196

Description of Safety Integrated functions
4.3 Safety Integrated Advanced Functions
Select SCA
Select the SCA function using the PROFIsafe control word S_STW2.23. For SCA, you must
use telegram 903, in which control word S_STW2 and status word S_ZSW_CAM1 are
available for SCA.
Cam synchronization
For transmission of the output cam status word via PROFIsafe to the F host, the output cam
signals of the two monitoring channels are synchronized. Monitoring is also performed as to
whether a different output cam signal from the second channel is plausible. If the drive
detects an error, it outputs the message C01711 with the fault value 1014.
As the position tolerance for monitoring the output cam positions, the tolerance for the cross-
check of the actual position between the two monitoring channels in p9542 ("Actual value
comparison tolerance") is used.
Transmission via PROFIsafe
After SCA has been parameterized and selected, the monitoring results are transmitted in
status word S_ZSW_CAM1 (see Chapter "Additional process data (Page 226)").
Function diagrams (see SINAMICS S120/S150 List Manual)
• 2826
• 2844
Overview of important parameters (see SINAMICS S120/S150 List Manual)
• p9501
• p9503
• p9505
• p9536[0...29] SI Motion SCA (SN) plus cam position (Control Unit)
• p9537[0...29] SI Motion SCA (SN) minus cam position (Control Unit)
• p9540
• p9542
• r9703.0...31
• r9708[0...5]
• r9720.23
• r9727
• r9771.22
194
SCA (Safe Cam)
S_ZSW_CAM1 Safety status word Safe Cam 1
SI Motion enable safety functions (Control Unit)
SI Motion SCA (SN) enable (Control Unit)
SI Motion SP modulo value (Control Unit)
SI Motion SCA (SN) tolerance (Control Unit)
SI Motion actual value comparison tolerance (crosswise) (Control Unit)
CO/BO: SI Motion SCA status signal (Control Unit)
SI Motion diagnostics safe position
CO/BO: SI Motion drive-integrated control signals:
Deselect SCA
SI Motion user agreement inside the drive
SI shared functions: SCA supported
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated