Model DL-ATG Operating Instructions
P/N 889-4300-00
III Loop Orientation
i
DL-ATG-1
The DL-ATG-1 version of the detector accurately counts directional vehicles in a single lane of traffic with loop spacing of 8 feet from
leading edge to leading edge. Loop spacing may vary from a minimum of 2 feet from leading edge to leading edge (overlapping by
six inches) to a maximum of 12 feet from leading edge to leading edge. Count accuracy at high speed (30 mph) decreases as you
approach the minimum and maximum loop spacing. Vehicles must span both loops to be counted.
Typical loop size is 2.5 feet x 6 feet. The loop size can vary from 2 feet to 4 feet in the direction of travel and 5 feet to 7 feet across
the lane. The loop should have three (3), four (4), or five (5) turns of wire. The detector operates most effectively when each channel
is connected to a single loop.
Connecting multiple loops to a single channel is not recommended.
ii
DL-ATG-2
The DL-ATG-2 version of the detector accurately counts directional vehicles in two lanes of traffic with loop spacing of 8 feet from
leading edge to leading edge. Loop spacing may vary from a minimum of 2 feet from leading edge to leading edge (overlapping by
0.5 feet) to a maximum of 12 feet from leading edge to leading edge. Count accuracy at high speed (30 mph) decreases as you
approach the minimum and maximum loop spacing. Vehicles must span both loops to be counted.
Typical loop size is 2.5 feet x 18 feet. The loop size can vary from 2 feet to 4 feet in the direction of travel and 12 feet to 24 feet
across the lane. The loop should have two (2), three (3), or four (4) turns of wire. The detector operates most effectively when each
channel is connected to a single loop.
Connecting multiple loops to a single channel is not recommended.
IV
Calibration
Calibrating the detector will automatically select the proper frequency and sensitivity for each channel. The detector ships from the
factory ready to be calibrated for first time use. Once power is applied and there are no loop failure indications, the LCD displays
CAL
. To calibrate the detector, place the Reno A&E Calibration Loop (not included with the detector) on the ground at least two feet
away from the inductive loop. Slowly drag the calibration loop over the entire detection area of the inductive loops. The calibration is
finished when the calibration loop has been detected over both channels and there is no presence detected on the loops for
approximately five (5) seconds. Once the calibration process has successfully been completed, the display will revert from
CAL
to
Count A
B. Please note that once the calibration process has been initiated there is no way to cancel the calibration procedure. To
enter into calibration mode after initial calibration, press and hold the Detector Reset button for 10 seconds until the LCD Display
reads
CAL
.
NOTE: Proper calibration is essential for accurate detection of tailgating vehicles. It is critical that vehicles do not pass over the
inductive loop while calibration is in progress.
V
Loop Fail
Any time a channel failure occurs the LCD Display will indicate what type of failure has occurred on the channel. The LCD will
display
L lo
for low loop inductance and shorted loop situations or
L hi
for high loop inductance and open loop situations. When
there is a failure on both channels the display will toggle between the channels every 5 seconds displaying the fail status of each
channel. Upon failure, the presence Output Relay for that channel will enter into the Fail Safe Mode, indicating presence on that
channel. In addition to the LCD display indication, and the Presence Output Relay, the corresponding channel’s Presence LED will
flash three flashes per second. If the loop self-heals, the Presence Relay and LCD will resume normal operation while the LED will
continue to flash until the loop fail register is cleared by a Detector Reset or by cycling power.
VI
Pin Connections
(Reno A&E Wiring Harness Model 804)
Pin
Wire Color
Function
A
White
Power, Neutral, 120 VAC
B
Gray/Black
BA Count, Relay Common
C
Black
Power, Line, 120 VAC
D
Brown
Channel A Loop Input
E
White/Brown
Channel A Loop Input
F
Red
Channel B Loop Input
G
White/Red
Channel B Loop Input
H
Green
Chassis Ground
J
Orange
No Connection
K
White/Orange
No Connection
L
Yellow
No Connection
M
White/Yellow
No Connection
N
White/Blue
Channel A Presence, Relay Normally Open
P
Blue
Channel A Presence, Relay Common
R
Violet
AB Count, Relay Common
S
White/Violet
AB Count, Relay Normally Open
T
Gray
Channel B Presence, Relay Common
U
White/Gray
Channel B Presence, Relay Normally Open
V
White/Black
BA Count, Relay Normally Open
NOTE
:
All pin connections listed above are with power applied, loop connected, and no vehicle detected.
To calibrate the detector, drag the calibration
loop slowly (5 seconds in each loop) through
both loops three times with
CAL
on.
Calibration Loop Start
Inductive Loops
