Effects When Sn Responds - Siemens SINUMERIK 840D sl Function Manual

03.06
When booting, the parameterization (parameter assignments) are checked in each
monitoring channel. In the case of parameterization errors (a condition is not ful-
filled), Alarm 27033 or F01687 is output after the control has been booted.
6.8.2

Effects when SN responds

Warning
!
When defining cam positions, please note that the function only monitors the
actual position thus making (predictive) sensing of cam signals impossible.
The cams are only considered as being safe if they were safely referenced. This is
the reason that the user must interlock this SGA with the cam SGAs in the SPL.
Response times
S Response times without cam synchronization
typical1 interpolation clock cycle + 1.5 monitoring clock cycles
maximum 1 position controller clock cycle + 4 monitoring clock cycles + 2 inter-
polation clock cycles + 3 PLC cycles
S Response times with cam synchronization
typical1 interpolation clock cycle + 2.5 monitoring clock cycles
maximum 1 position controller clock cycle + 5 monitoring clock cycles + 2 inter-
polation clock cycles + 3 PLC cycles
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Safety Functions Integrated in the System/Drive
6.8 Safe software cams (SN)
6-159