Siemens Sinumerik 840D sl Function Manual page 309

Sinumerik safety integrated

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Signals that have a line above them signify "low active"

Figure 7-34 Function diagram of the "safety relay"

The description is provided in the following:

Three shutdown inputs E1 to E3

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

Time measurement - -

rising to falling edge

If one of these inputs is set to 0, direct output A0 is set

to 0. Outputs A1 to A3 switch with the delay of timer

1--3. If one of these inputs is not used, then it is inter-

nally set to "1" as static signal.

One of these inputs must also be used to initiate test

operation of the safety relay (forced checking proce-

Connecting Sensors/Actuators

7.5 Safe programmable logic (SPL)

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