2 4 V D C E X T E R N A L L O O P D E T E C T O R W I R I N G
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24 Vdc “Center” Loop Detector -
Allows gate to stay open when vehicles are obstructing
path. Caution: This option is for all vehicles including ones less than 14' long. Center loop
system requires two safety loops.
24 Vdc “Safety” Loop Detector -
Allows gate to stay open when vehicles are obstructing
path. Caution: Suggested for vehicles 14 feet or longer. If a vehicle is shorter, a center loop
system is recommended and should be installed.
If the “Inside” and “outside” safety loops are connected to the same loop detector:
• They should be series connected to the detector
• Have the same dimensions.
• Have the same number of wire turns. (See table below)
24 Vdc “Exit” Loop Detector -
Allows gate to automatically open for exiting vehicles.
Part #
A24
(Sold Individually)
10 feet to 13 feet
14 feet to 26 feet
27 feet to 80 feet
80 feet and up
4
3
2
1
The wire is continuously wound in
the loop saw cut for the required
number of turns. One turn shown.
(Refer to table)
Recommended Loop Wire XLPE 12-18 gauge
(Use heavier wire gauge for a more durable
loop area).
Remove sharp inside corners
by making corner cuts
The wire MUST be twisted together 6 twists per foot
from the end of the feeder slot to the loop detector.
Loop Perimeter
Number of Wire Turns Needed for Loop Sizes
Number of Wire Turns
Road Surface
Sealant
Feeder Slot
Saw Cut
1/8" to 1/4" Width Saw Cut
2" to 2.5" Depth
Saw Cut
Home Run
Backer Rod
Insulated loop wire
3 turns shown, amount varies.
Refer to table
Contact your local dealer
for more information
about loop detectors.
NOTE:
Wire mesh or reinforcement
imbedded in the road surface should be
cut away a minimum of 6 inches from
the perimeter of the loop.
Installing Insulated Loop Wire
NOTE:
Refer to the loop detector manual
for more specific information.
Center
Safety
Exit
