LOGO! Manual
A5E00067781 01
176
Functional diagram of the LOGO! solution
1
Closed
Safety bar
Gate is closed
Gate is closed
T
05.00s
1
Q1
I1
I2
I3
I5
Ia1
x
I6
I4
Q2
x
Ia2
Gate
open
&
1
&
=1
& &
&
&
1
1
I5
x
I5
x
x
I7
x
I6
I7
x
I6
I7
x
Q3
Qa1
x
Qa2
I5
I6
T
05.00s
T
02.00s
Gate
clo-
sed
Flas-
hing
light
Gate is open
Gate open
Gate open
Gate is open
Gate is open
Open gate by hand
Close gate by hand
Safety bar
Safety bar
Closed
Gate is closed
Gate is closed
Gate is open
Closed
Open
The OPEN gate and CLOSE gate start switches move the
gate in the appropriate direction provided it is not already
moving in the other direction. Movement of the gate is
halted by the relevant limit switch. The gate is also pre-
vented from closing by the safety bar.
Applications
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