Connecting Sensors/Actuators; Safety-Related Input/Output Signals; Overview Of The Sges/Sgas And Their Structure - Siemens SINUMERIK 840D sl Function Manual

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Connecting Sensors/Actuators

Safety–related input/output signals

The safety–related input and output signals (SGEs and SGAs) are the interface of

the internal Safety Integrated functionality to the process.

SGE signals (safety–related input signals) control the active monitoring by dese-

lecting or selecting the safety functions. This is realized, among other things, de-

pending on the status (switching status) of sensors and transmitters.

SGA signals (safety–related output signals) are feedback signals from safety func-

tions. They are, among other things, suitable for controlling actuators in a safety–

related fashion.

Processing I/O signals for the NC and drive through two channels

A two–channel structure is used to input/output and process safety–related input/

output signals (refer to Figure 7-1 "NCK and drive monitoring channel"). All of the

requests and feedback signals for safety–related functions should be entered or

retrieved through both monitoring channels (two–channel structure).

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition

Sinamics s120