HySecurity HSG80F, Programming And Operations Manual

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© 2018 Vehicle Detector Installation and Loop Layouts MX3636-01 Rev. D 81
SECURE
PUBL
IC
A
D
F
PEDESTRIAN G
A
TE & WALKW
A
Y
SWING GATE
B
C
E
FREE EXIT
OR
OBSTRUCTION LOOP
SHADOW
LOOP
OBSTRUCTION LOOP
Enter Exit
L
OOp
L
ayOutS
: S
inGLe
L
ane
, B
i
-
Or
S
inGLe
-d
irectiOnaL
Uni-directional Single Lane
Vehicles
must pass from one loop to the next
without loss of detection.
Dimension “A” = 6 to 20 ft
(183 to 610 cm)
Dimension “B” = 6 to 8 ft
(183 to 244 cm)
Dimension “C” = Maintain 4 ft (122 cm)
Dimension “D” = Maintain 3 to 4 ft (91
to 122 cm) between loop and edge of
roadway. No vehicle can pass through
such a small area and escape detection.
Dimension “E” = 4 ft maximum
(122 cm) Vehicles must be able to pass
from one loop to the next without loss
of detection.
Dimension “F” = Distance from gate to
free exit loop is gate panel length plus
4 ft (122 cm)
For Openings less than 28 Feet
Two gate site scenarios
include access control entry
systems.
• Bi-directional system with
controlled access entry (card
reader, radio control, etc.)
and free exit gate is closed
by a “TIMER TO CLOSE.”
• For a single directional
system, the free exit loop is
replaced by an obstruction
loop (reversing loop).
Gate starts timing to close
as all loops are clear. Timer
is adjustable from 1 to 99
seconds.
NOTE: A minimum of three (3)
detectors are required for this
type of gate site scenario.
NOTE: A minimum of three (3) detectors are required for this
type of gate site scenario.