Model DL-ATG Operating Instructions
P/N 889-4300-00
1
2
MODEL DL-ATG
TWO CHANNEL ANTI-TAILGATING LOOP DETECTOR
OPERATING INSTRUCTIONS
I
General
The model designation indicates the number of lanes covered by each loop.
Model DL-ATG-x
1
= Single Lane
2
= Two Lane
The Model DL-ATG is a two channel detector designed to accurately count vehicles and identify their direction of travel over two
small inductive loops, even if they are tailgating. Please note that the Model DL-ATG has been specifically designed and tested to
count and/or identify
passenger vehicles
.
The Model DL-ATG accumulates directional vehicle counts that are displayed on the front panel Liquid Crystal Display (LCD). The
Model DL-ATG has 4 relay outputs; 2 for loop presence, 1 for counting in the AB direction, and 1 for counting in the BA direction.
Prior to initial operation, the Model DL-ATG detector must be calibrated
. Connect the detector to an appropriately wired harness
and apply power. Follow the instructions outlined under
Calibration
on page 2 to calibrate the detector.
II
Controls
i
Push Buttons
A
B Count
When pressed the LCD screen displays the number of vehicles that have traveled over the loops in the A
B direction. This
accumulator is capable of accumulating up to 99,999 directional counts. The display will show the hundreds, tens, and ones digits
until the accumulated count exceeds 999. At this point the display will alternate between the ten thousands and thousands digits and
the remaining three digits for hundreds, tens, and ones. Loss of power will not reset this number. The A
B accumulator is indicated
by
the symbol on the bottom of the LCD screen.
B
A Count
When pressed the LCD screen displays the number of vehicles that have traveled over the loops in the B
A direction. This
accumulator is capable of accumulating up to 99,999 directional counts. The display will show the hundreds, tens, and ones digits
until the accumulated count exceeds 999. At this point the display will alternate between the ten thousands and thousands digits and
the remaining three digits for hundreds, tens, and ones. Loss of power will not reset this number. The B
A accumulator is indicated
by
the symbol on the bottom of the LCD screen.
Count Reset
When pressed, both A
B and B
A Count accumulators are reset to zero.
Loop Fail
When pressed, the LCD screen displays the count of past failures for each loop. The LCD will display the text “LOOP FAIL” and a
channel indicator icon
for Channel A or
for Channel B. These numbers reset to 0 for both channels on power down, or when
Detector Reset is pressed.
Diagnostics
When pressed the LCD screen continuously displays the Loop Inductance value L= in microhenries (µH). When a vehicle is detected
the LCD displays the percentage of inductance change -
ΔL/L= value. When this feature is activated a single audible beep sounds for
vehicles traveling in the A
B direction. A double audible beep sounds for vehicles in the B
A direction. Pressing the Diagnostics
button again while viewing Diagnostics will toggle between Channel A and Channel B. This Diagnostic display will turn OFF after
15 minutes and return to the A
B Count display.
Detector Reset
When pressed both channels are reset. Detector Reset will clear the loop fail accumulators, and any prior loop fail indication.
Detector Reset does not reset the count accumulators.
1
2
1
3510 E. Atlanta Ave.
Phoenix, AZ 85040 USA
Telephone: (480) 968-6407
Fax: (602) 437-1996
Website: www.editraffic.com
E-mail: [email protected]
