Siemens LOGO! 230 RC - 5.2 Automatic door

LOGO! manual
EWA 4NEB 712 6006-02
78
5.2 Automatic door
You often find automatic door control systems at the entrances to supermar-
kets, public buildings, banks, hospitals, etc.
5.2.1 Demands on an automatic door
S When somebody approaches, the door must open automatically.
S The door must remain open until there is nobody in the doorway any
more.
S If there is nobody in the doorway anymore, it must close automatically
after a short time.
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Motion detector
Outside
Inside
Motion detector
B1
B2
Limit switch
Closed
Limit switch
Open
Main switch
Q1
S1 S2
Motion detector
Main switch
The door is generally driven by a motor with a safety clutch. This prevents
people from being caught or injured in the door. The control system is con-
nected to the mains via a main switch.
Applications