Controlling The Safety Functions - Siemens Sinamics S110 Function Manual

8.6

Controlling the safety functions

Safety Integrated functions can be controlled via on-board terminals or via a PROFIsafe
telegram using PROFIBUS. The Extended Functions can be controlled via on-board
terminals or PROFIsafe, control of the Basic Functions can be selected via on-board
terminals (F-DI 0) or PROFIsafe and on-board terminals (F-DI 0).
NOTICE
PROFIsafe or terminals
With a Control Unit, control of the Extended Functions is only possible using PROFIsafe or
on-board terminals. Mixed operation is not permissible.
On-board terminals
The failsafe input and output terminals (F-DI and F-DO) act as an interface between the
internal Safety Integrated functionality and the process.
A dual channel signal applied to an F-DI (Failsafe Digital Input, safety-oriented digital input =
safe input terminal pair) controls the active monitoring of the activation/deactivation of safety
functions. This function also depends on the status of sensors (e.g. switches).
An F-DO (Failsafe Digital Output, safety-oriented digital output = safe output terminal pair)
delivers a dual channel signal representing feedback from the safety functions. It is also
suitable for the failsafe control of actuators (e.g. line contactor). Please also see diagram
"Internal connections of the DI/DO of the CU305 with Safety function".
Dual-channel processing of I/O signals
A dual-channel structure is realized for data input/output and for processing failsafe I/O
signals. All requests and feedback signals for failsafe functions should be entered or tapped
using both channels.
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Safety Integrated Functions
8.6 Controlling the safety functions
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