Reno AX2-8-1C-FTL Operating Instructions

VIII. L o o p I n s t a l l a t i o n :
The vehicle detection characteristics of an inductive loop detector are greatly influenced by the loop size
and proximity to moving metal objects such as gates. Vehicles such as small motorcycles and high bed
trucks can be reliably detected if the proper size loop is selected. If the loop is placed too close to a
moving metal gate, the detector may detect the gate. The diagram below is intended as a reference for
the dimensions that will influence the detection characteristics.
General Rules:
1. The detection height of a loop is 2/3 the shortest leg (A
or B) of the loop. Example: Short leg = 6 feet,
Detection Height = 4 feet.
2. As the length of leg A is increased, distance C must
also increase.
A = 6 ft 9 ft 12 ft 15 ft 18 ft
C = 3 ft 4 ft 4.5 ft 5 ft 5.5 ft
3. For reliable detection of small motorcycles, legs A and
B should not exceed 6 feet.
L o o p I n s t a l l a t i o n - S a w C u t T y p e
1 Mark the loop layout on the pavement. Remove sharp inside corners that can damage the loop wire insulation.
2 Set the saw to cut to a depth (typically 2" to 2.5") that ensures a minimum of 1" from the top of the wire to pavement
surface. The saw cut width should be larger than the wire diameter to avoid damage to the wire insulation when placed
in the saw slot. Cut the loop and feeder slots. Remove all debris from the saw slot with compressed air. Check that the
bottom of the slot is smooth.
3 It is highly recommended that a continuous length of wire be used to form the loop and feeder to the detector. Loop
wire is typically 14, 16, 18, or 20 AWG with cross-linked polyethylene insulation. Use a wood stick or roller to insert the
wire to the bottom of the saw slot (do not use sharp objects). Wrap the wire in the loop saw slot until the desired
number of turns is reached. Each turn of wire must lay flat on top of the previous turn.
4 The wire must be twisted together a minimum of 6 twists per foot from the end of the saw slot to the detector.
5 The wire must be held firmly in the slot with 1" pieces of backer rod every 1 to 2 feet. This prevents the wire from
floating when the loop sealant is applied.
6 Apply the sealant. The sealant selected should have good adhering properties with similar contraction and expansion
characteristics to that of the pavement material.
LOOP PERIMETER NUMBER OF TURNS
10 feet - 13 feet 5
14 feet - 26 feet 4
27 feet - 45 feet 3
46 feet - 100 feet 2
100 feet and up 1
1
1/8" to 1/4" SAW SLOT
3
THE WIRE IS
CONTINUOUSLY WOUND
IN THE LOOP SAW SLOT
FOR THE REQUIRED
NUMBER OF TURNS (2
turns shown)
turn 2
turn 1
FEEDER SLOT
Recommended Loop Wire: Reno LW-120 for 1/8" slots
Reno LW-116-S for 1/4" slots
Model AX2 Version 2.1 FTL Operating Instructions 07-15-04
SLIDE GATE
A
A = Loop dimension parallel to the gate
21 ft
B = Loop dimension perpendicular to the gate
6 ft
C = Distance of the loop from the gate
ROAD SURFACE
2
6 SEALANT
5 BACKER ROD
1" piece
spaced about
every 1'
REMOVE SHARP
INSIDE CORNERS
LOOP WIRE
3 TURNS
THE WIRES MUST BE
TWISTED TOGETHER
6 TWISTS PER FOOT
FROM THE END OF
THE SAW CUT TO
THE DETECTOR
4
END OF SAW CUT
4
Reno A & E P/N 551-0113-00
Engineering Excellence! Engineering Excellence!
C
O P E R A T I N G
Model AX2-8-1C-FTL
B
TWO CHANNEL LOOP DETECTOR
I. General:
The Model AX2 is a two channel inductive loop detector that monitors two independent inductive loops
and provides a separate relay output for each loop input (channel). The loops connected to Channels 1
and 2 are scanned (alternating on and off cycles), which eliminates crosstalk between loops connected to
the same Model AX2 detector.
Please verify source voltage before applying power. The model AX2-8-1C-FTL requires 220V to 240V
AC input.
The detector is factory configured for Fail-Safe operation. The output state of the either channel in Fail-
Safe mode is equivalent to a CALL when in either power failure or loop failure.
II. Indicators and Controls:
i. Detect / Fail LEDs:
The detector has one green and two red LED indicators that are used to provide an indication
of the detector's power status, output state, and/or loop failure conditions. The table below lists the
various indications and their meanings.
Status POWER LED
Off No power or low power
On Normal power to detector
SAW SLOT
Flash
MIN
1"
Note: If the supply voltage drops below 75% of the nominal level, the power LED will turn off, providing a
visual indication of low supply voltage. Model AX2 detectors will operate with supply voltage as low as 70% of
nominal supply voltage.
ii. Front Panel DIP Switches (Both Channels):
Switch
1
2
3
4
5
6
Reno A & E Reno A & E
4655 Aircenter Circle 4655 Aircenter Circle
Reno, NV 89502-5948 USA Reno, NV 89502-5948 USA
Telephone: (775) 826-2020 Telephone: (775) 826-2020
Fax: (775) 826-9191 Fax: (775) 826-9191
Website: www.renoae.com Website: www.renoae.com
E-mail: contact@renoae.com E-mail: contact@renoae.com
I N S T R U C T I O N S
CH 1 / CH 2 DETECT LED
No vehicle present and Loop OK
Vehicle present (Detect)
1 Hz rate, 50% duty cycle - Shorted Loop
10 Hz rate, 50% duty cycle - Open Loop
3 Flashes per second - Prior Loop Failure
N/A
(Loop has failed and the problem has been corrected.)
NOTE: If a vehicle is detected, the LED will turn
ON even if a prior loop failure condition exists.
ON OFF
Frequency
(See Table under Frequency Section)
Pulse Mode Presence Mode
Sensitivity Boost No Boost
Sensitivity
(See Table under Sensitivity Section)
F O R
Factory Default
Off
Off
Off
Off
On
Off