Siemens CP 243-2 Operations Instructions download pdf (Page 43)

43

AS-Interface

components for

safety at work

The concept of “

safety at work

” permits

integration of safety-related compo-

nents such as emergency stop buttons,

guard door switches, or safety light

grids, to be connected directly into a

standard or V2.1 AS-Interface network.

These components are fully compatible

with the standard AS-Interface compo-

nents i.e. master, slaves, power supply

unit, repeater, etc. according to EN

50295. This new range of safety com-

ponents has been designed and certi-

fied to comply with the relevant Euro-

pean and international safety standards.

Siemens can offer and supply all rele-

vant components to construct a safe

AS-Interface network solution.

Safety monitor

The safety monitor is designed to react

on the information transmitted via AS-

Interface, i.e. master call and response

from the safety slave, and stops the

plant in a safe state should the safety

circuit be interrupted or the safety sen-

sor malfunctions.

For standard AS-Interface bus stations, the

master still performs the data transmis-

sion function between a PLC and the sta-

tions on the bus (sensors and actuators).

Safe modules type K45

The safe compact module K45F is

equipped with two “safe” inputs. For

operation up to safety category 3 it is

possible to assign both inputs sepa-

rately. If category 4 is required, a dual-

channel input is available on the module

via an M12 connection.

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