17
Only one monitored photocell can be connected to the
Closing or Opening safety inputs. More than one photocell
or other device can be connected to the safety inputs, but
they will not be monitored.
Other devices connected to the safety inputs must have
normally closed contacts and wired in series with the main
monitored sensor.
See the following example of one closing safety monitored
photocell and one non monitored one.
1
2
5
4
3
1
2
RX CL1
TX CL1
1
2
5
4
3
1
2
RX CL2
TX CL2
9 10 11 12 13 14 15 16 17 18 19
OPEN
A
B STP CL OP
FSW
- - -
+24V
+ + -TX
FSW
20 21
W.L.
LOCK
-
+
-
+
-
+
-
+
-
+
+
-TX FSW
-
+
+
MONITORED
NON MONITORED
-
Connection of Two Pairs of Closing Photocells, One
Monitored and One Non Monitored
Opening/Closing Safety Devices:
They operate during the gate opening and closing move-
ments and are suitable to protect the opening and closing
areas against the risk of impact. Typically these photocells
work in combination with other monitored photocell pro-
tecting closing or opening entrapment zones. In that case
they can’t be monitored so they can only protect against
potential impact on vehicles.
Closing Safety Devices
Opening Safety
Devices
Opening/Closing Safety Devices
1
2
5
4
3
1
2
RX CL
TX CL
1
2
5
4
3
1
2
RX OP/CL
TX OP/CL
9 10 11 12 13 14 15 16 17 18 19
OPEN
A
B STP CL OP
FSW
-
-
-
+24V
+
+ -TX
FSW
20 21
W.L.
LOCK
-
+
-
+
-
+
-
+
1
2
5
4
3
1
2
RX OP
TX OP
-
+
-
+
-
+
-
+
-
+
+
+
+
-TX FSW
-TX FSW
MONITORED
MONITORED
NON MONITORED
-
Connection of One Pair of Monitored Closing
Photocells, One Pair of Monitored Opening
Photocells and One pair of Non Monitored
Opening/Closing Photocells
16” or less
1
2
5
4
3
1
2
RX CL
TX CL
1
2
5
4
3
1
2
RX OP/CL
TX OP/CL
9 10 11 12 13 14 15 16 17 18 19
OPEN
A
B STP CL OP
FSW
-
-
-
+24V
+
+ -TX
FSW
20 21
W.L.
LOCK
-
+
-
+
-
+
-
+
-
+
-
+
+
-TX FSW
-
+
MONITORED
NON MONITORED
Connection of a pair of Monitored Closing
Photocells, and one pair of Non Monitored
Opening/Closing Photocell
See the following connections diagrams for example of
opening/closing safety wiring.
