Siemens LOGO! Series Manual page 82

Applications
Multi-functional switch with LOGO!
Switch light on
I1
On-delay
Switch light off
I1
02.00s
Switch permanent
light on
I1
Q1
The diagram shows the circuit for an input with an associated output.
This switch offers the following:
S
When the switch is pressed: The light is switched on and goes off
again after the set time of 6 minutes (T=06:00m) has elapsed (off-delay)
S
When the switch is pressed twice: The light is switched on perma-
nently (the latching relay is set via the impulse relay).
S
When the switch is pressed for 2 seconds: The light is switched off
(on-delay switches the light off; both the permanent light and the normal
light; this branch of the circuit is therefore used twice)
You can enter these circuits several times for the remaining inputs and out-
puts. Instead of using 4 automatic stairway lighting systems or 4 impulse
relays, you thus use only a single LOGO! module. However, you can also
use the free inputs and outputs for completely different functions.
76
Off-delay
06:00m
T
Pulse-relay
w1
T
x
Latching relay
EWA 4NEB 712 6006-02
Q1
LOGO! manual