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ES, Emergency-stop
381
02/16 MN05013001Z EN
The signal diagram of the function block for this application
shows:
• the dependence of the enable contact of ES01QS on the
state of coils ES01I1 and EM01I2.
• the relationship between elapsed discrepancy time
ES01DT and the error output ES01ER.
• the error acknowledgement with coils ES01I1 and ES01I2.
• the controlled re-enabling after the hazard has been recti-
fied and the Reset coil ES01RE has dropped out.
Figure 190:
Example emergency-stop: signal diagram
a
Normal operation.
b
Triggered emergency-stop after a hazardous situation occurs.
c
Discrepancy time exceeded when releasing the emergency-stop
button. Error signal at contact ES01ER.
d
Error acknowledgement by actuation of the emergency-stop
pushbutton.
e
Release of the emergency-stop pushbutton and subsequent
controlled re-enabling after the Reset coil has dropped out.
ES01I1
ES01I2
ES01QS
ES01ER
t > DT
ES01RE
a
b
c
e
d
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