LOGO! manual
EWA 4NEB 712 6006-02
84
After closing time, motion detector B2 continues to open the door for 1 hour
so that customers can leave the shop.
Motor for opening
Output Q1 is switched on and opens the door when
S the control switch at I5 is operated (the door is to be constantly open), or
S the motion detectors indicate that somebody is approaching the door, and
S the door is not yet completely open (limit switch at I4).
Motor for closing
Output Q2 is switched on and closes the door when
S the control switch at I6 is operated (the door is to be constantly closed),
or
S the motion detectors indicate that there is nobody near the door, and
S the door is not yet fully closed (limit switch at I3).
Buzzer
You connect the buzzer to output Q3. The buzzer sounds for a short time (in
this case 1 second) when the door is closed. In the block diagram, you enter
the following circuit at Q3:
T= 1 s
xQ3
Buzzer
Q2
Close
output
Applications
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