LOGO! Manual
A5E00067781 01
162
Detecting motion
During business hours, motion detector B1 opens the door
as soon as somebody wants to enter the shop from out-
side. Motion detector B2 opens the door if somebody wants
to leave the shop.
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 the
following occurs:
The control switch at 15 is operated (the door is to be
constantly open) or
The motion detectors indicate that somebody is ap-
proaching the door and
The door is not yet fully open (limit switch at I4).
Motor for closing
Output Q2 is switched on and closes the door when the
following occurs:
The control switch at 16 is operated (the door is to be
constantly closed) or
The motion detectors indicate that there is nobody near
the door and
The door is not yet fully closed (limit switch at I3).
Buzzer
Connect the buzzer to output Q3. The buzzer sounds for a
short time (in this case 1 second) when the door is closed.
Enter the following circuit at Q3 in the block diagram:
T= 1 s
x
Q3
Buzzer
Q2
Close
output
Applications
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