HySecurity SwingSmart DC 20 Installation And Reference Manual page 95

This layout illustrates a
bi-direc onal traffic system with
controlled access entry (card
reader, radio control, etc.) and a
free exit gate. The gate is closed
by a TIMER TO CLOSE. The ming
to close starts when all loops are
clear. The mer is adjustable
from 1 to 99 seconds.
For a single-direc onal system,
the FREE EXIT loop is replaced by the FREE EXIT loop is replaced by
an OBSTRUCTION loop. an OBSTRUCTION loop.
DIMENSIONS
A = 6 to 20 feet (2 to 6 meters)
B = 6 to 8 (2m to 243cm)
C = Maintain 4 (122cm)
D = Maintain 5 (152cm) between loop
and edge of roadway. No vehicle can pass
through such a small area and escape detec on.
E = Maximum 4 (122cm). Vehicle must be
able to pass from one loop to the next
without loss of detec on.
F = The distance from gate to FREE EXIT
LOOP is equal to the gate panel length
plus 4 (122cm).
Vehicle Detectors and Loop Layout for Openings less than 28 feet*
* NOTE: A minimum of three (3) detectors are required for this type of gate.
Revision A
PUBLIC SIDE
ENTER
OBSTRUCTION
C
D
E
FREE EXIT
OBSTRUCTION
SECURE SIDE
Figure 6-7.
Reference
Installing Vehicle Detectors and Loops
EXIT
LOOP
A
CENTER
LOOP
or
LOOP
ACCESS CONTROL DEVICE
(Card reader, etc.)
B
F
6-9