A4
Figure C
Entrapment protection
To comply with the UL325 standard for gate operators every
entrapment zone, as defined in ASTMF2200, must be pro-
tected by two independent entrapment protection devices.
One of the devices is inherent in the FAAC operators or the
control board design, the other can be external, like a pho-
tocell or an edge sensor.
See this picture for the photocells positioning:
Closing Safety Devices
Opening Safety
Devices
Opening Safety Devices:
Are active only during the gate opening movement, and
are suitable for protecting the area between the opening
leaves and fixed obstacles (walls, etc) agains the risk of
entrapment
Closing Safety Devices:
Are active only during the gate closing movement, and are
suitable for protecting the closing area against the risk of
entrapment.
Monitored Devices:
Additionaly the UL325 standard requires that every external
entrapment protection device must be monitored for
presence and correct operation. To comply with this
requirement the photeocells must be wired as shown:
1
2
5
4
3
1
2
RX OP
TX OP
1
2
5
4
3
1
2
RX CL
TX 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
-
+
+
-TX FSW
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 CL
TX CL
+
-TX FSW
-
+
Figure I
Connection of One Pair of Monitored Opening
Photocells and One Pair of Monitored Closing
Photocells
Connection of One Pair of Monitored Closing Photocells
F
+
+
ADVANCED PROGRAMMING
FAIL SAFE:
If this function is activated, it enables a
function test of the photocells before any
gate movement. If the test fails (photocells
not serviceable), the gate does not start the
movement.
= Active
= Disabled
Display
Function
Default
Once the photocells are wired the Fail Safe mode of the
455D control board must be enabled. To enable it enter
in advanced programming by pressing and holding “F”
and then press “+”, scroll to the “FS” parameter and select
“Active”.
For more details please refer to the advanced programming
pararagraph.
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.
6. Connection of Safety devices
16” or less
