Controlled Products Systems Group SWINGSMART DC 20 - Manual (Page 107)

Installing Vehicle Detectors and Loops
Revision E Reference 6-9
Figure 6-8.
B
ENTER EXIT
OBSTRUCTION
LOOP
A
ACCESS CONTROL DEVICE
(Card reader, etc.)
Vehicle Detectors and Loop Layout for Openings greater than 28 feet*
PUBLIC SIDE
This layout illustrates a
bi-direcƟonal 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 Ɵming
to close starts when all loops are
clear. The Ɵmer is adjustable
from 1 to 99 seconds.
For a single-direcƟonal system,
the FREE EXIT loop is replaced by
an OBSTRUCTION loop.
the FREE EXIT loop is replaced by
an OBSTRUCTION loop.
SECURE SIDE
C
D
E
F CENTER
LOOP
FREE EXIT
or
OBSTRUCTION
LOOP
* NOTE: A minimum of three (3) detectors are required for this type of gate.
DIMENSIONS
A = 6 to 8 feet (2 meters to 243cm)
B = 6 to 12Ō (2m to 366cm)
C = Maintain 4Ō (122cm)
D = Maintain 5Ō (152cm) between loop
and edge of roadway. No vehicle can pass
through such a small area and escape detecƟon.
E = Maximum 4Ō (122cm). Vehicle must be
able to pass from one loop to the next
without loss of detecƟon.
F = The distance from gate to FREE EXIT
LOOP is equal to the gate panel length
plus 4Ō (122cm).
G = 4 to 6Ō (122cm to 2m).
OBSTRUCTION
LOOP
CENTER
LOOP
FREE EXIT
or
OBSTRUCTION
LOOP
G