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Safety function blocks
508
02/16 MN05013001Z EN
The signal diagram of the function block for this application
shows:
• The start of the timing relay, triggered by the emergency-
stop function block.
• The deactivation of the outputs after the delay time of 2
seconds has elapsed.
Figure 268:
Example 2 emergency-stop: signal diagram
a
Normal operation, emergency-stop not actuated, ES01QS
closed.
b
Emergency-stop is actuated, enable contact ES01QS opened.
The assignment of the contact ES01QS to the trigger coil of the
timing relay causes the off-delayed time to run down. After two
seconds, the contact of timing relay TS01QS opens and
switches off the two device inputs QS01 and QS03.
ES01QS
TS01SA
TS01QS
QS01
TS01TR
QS03
t1
a
b
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