Previous Solution; Door Control System With Logo - Siemens LOGO! Series Manual

5.2.2 Previous solution

Auxiliary circuit
L1
K3
S2
K2
K1
N
Open
As soon as one of the motion detectors B1 or B2 registers somebody's pres-
ence, the door is opened by K3.
If the two motion detectors detect nothing for a minimum period, K4 en-
ables the close operation.

5.2.3 Door control system with LOGO!

LOGO! allows you to considerably simplify the circuit. You need only con-
nect the motion detectors, the limit switches and the master contactors to
LOGO!.
LOGO! manual
EWA 4NEB 712 6006-02
K3
B1 B2
S1
K1
K2 K3
Close Open door
S2
K3
K3
K4 B1
B2
K4
Waiting time
Applications
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