Supported Functions - Siemens SINUMERIK 840D sl Function Manual

Safety Functions integrated in the drive
5.1 General information about SINAMICS Safety Integrated
Switch-off signal paths
Two independent switch-off signal paths are available. All switch-off signal paths are low active.
This ensures that the system is always switched to a safe state if a component fails or in the
event of cable breakage.
If a fault is discovered in the switch-off signal paths, the "Safe Torque Off" function is activated
and a system restart inhibited.
Monitoring cycle
The safety-relevant drive functions are executed cyclically in the monitoring cycle.
The safety monitoring clock cycle is a minimum of 4 ms. Increasing the current controller cycle
(p0110[0]) also increases the safety monitoring clock cycle.
Crosswise data comparison
The safety-relevant data in the two monitoring channels are cyclically subject to a crosswise
comparison.
If any data is inconsistent, a stop response is triggered with any Safety function.
Overview of parameters (see SINAMICS S120/S150 List Manual)
● r9780 SI monitoring clock cycle (Control Unit)
● r9880 SI monitoring clock cycle (Motor Module)
Juxtaposition of function names
Abbreviation
SH
SGA
SGE
5.1.2

Supported functions

The functions listed here are in conformance with the IEC 61508, SIL2 standard, in the
operating mode with a high demand, Category 3 and Performance Level d acc. to ISO 13849-1
(2006) as well as IEC 61800-5-2.
52
SINUMERIK
Name
Safe standstill
Safety-related output
Safety-related input
SINAMICS (acc. to EN 61800-5-2)
New abbrevi‐
ation
STO Safe Torque Off
F-DO Failsafe Digital Output
F-DI Failsafe Digital Input
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
New name
Safety Integrated