LOGO! Manual
A5E00067781 01
170
Components used
K1
Master contactor
K2
Master contactor
S0
(NC contact)
Stop switch
S1
(NO contact)
Open switch
S2
(NO contact)
Close switch
S3
(NC contact)
Open position switch
S4
(NC contact)
Closed position switch
S5
(NC contact)
Safety pressure bar
Functional diagram of the LOGO! solution
T=
5 s
T=
5 s
x
x
x
x
Q1
Open
Q3
Flashing
light
Q2
Close
I3
I4
I3
I6
I5
I1
I2
Q2
Q1
Safety bar
Gate is closed
Gate is open
Stop switch
Open
Start switch
Stop switch
Close start switch
T=
2 s
I2
I1
Open start switch
Close start
switch
Open
Start switch
The open and close 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
stop switch or the relevant limit switch. The gate is also
prevented from closing by the safety bar.
Applications