Reno AX2-8-1C-FTL User manual

Model AX2 Version 2.1 FTL Operating Instructions 07-15-04 4 Reno A & E P/N 551-0113-00
VIII. Loop Installation:
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.
3. For reliable detection of small motorcycles, legs A and
B should not exceed 6 feet.
Loop Installation - Saw Cut Type
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 sawslot 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.
O P E R A T I N G I N S T R U C T I O N S F O R
Model AX2-8-1C-FTL
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 CH 1 / CH 2 DETECT LED
Off No power or low power No vehicle present and Loop OK
On Normal power to detector Vehicle present (Detect)
Flash N/A
1 Hz rate, 50% duty cycle - Shorted Loop
10 Hz rate, 50% duty cycle - Open Loop
3 Flashes per second - Prior Loop Failure
(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.
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 ON OFF Factory Default
1 Frequency
(See Table under Frequency Section) Off
2 Off
3 Pulse Mode Presence Mode Off
4 Sensitivity Boost No Boost Off
5 Sensitivity
(See Table under Sensitivity Section) On
6 Off
A = 6 ft 9 ft 12 ft 15 ft 18 ft 21 ft
C = 3 ft 4 ft 4.5 ft
5 ft 5.5 ft
6 ft
Reno A & E
4655 Aircenter Circle
Reno, NV 89502-5948 USA
Telephone: [phone]
Fax: [phone]
Website: www.renoae.com
E-mail: [e-mail]
Engineering Excellence!
Reno A & E
4655 Aircenter Circle
Reno, NV 89502-5948 USA
Telephone: [phone]
Fax: [phone]
Website: www.renoae.com
E-mail: [e-mail]
Engineering Excellence!
A
B
C
A = Loop dimension parallel to the gate
B = Loop dimension perpendicular to the gate
C = Distance of the loop from the gate
SLIDE GATE
1
3
1/8" to 1/4" SAW SLOT
THE WIRE IS
CONTINUOUSLY WOUND
IN THE LOOP SAW SLOT
FOR THE REQUIRED
NUMBER OF TURNS (2
turns shown)
turn 2
turn 1
REMOVE SHARP
INSIDE CORNERS
FEEDER SLOT
END OF SAW CUT
4
THE WIRES MUST BE
TWISTED TOGETHER
6 TWISTS PER FOOT
FROM THE END OF
THE SAW CUT TO
THE DETECTOR
Recommended Loop Wire: Reno LW-120 for 1/8" slots
Reno LW
-
116
-
S for 1/4" slots
ROAD SURFACE
MIN
1"
SAW SLOT
SEALANT
BACKER ROD
1" piece
spaced about
every 1'
LOOP WIRE
3 TURNS
2
6
5
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

2 3
Frequency (DIP Switches 1 and 2):
Loops connected to channels 1 and 2 of a Model AX2 detector cannot crosstalk (i.e. interfere with
each other). In situations where loop geometry forces loops to be located in close proximity to one
another and the loops are connected to different detectors, it may be necessary to select different
frequencies for each loop to avoid loop interference. DIP switches 1 and 2 can be used to configure
the detector to operate at one of four frequencies corresponding to Low, Medium / Low, Medium /
High, and High as shown in the table below.
NOTE: After changing any frequency switch setting(s), the detector must be reset by momentarily
changing one of the other switch positions or pressing the front panel RESET pushbutton.
Frequency
Switch Low (0) Medium / Low (1) Medium / High (2) High (3) *
1 ON OFF ON OFF *
2 ON ON OFF OFF *
* Factory default setting.
Presence / Pulse Mode (DIP Switch 3):
Each channel has two modes of operation, Presence or Pulse. When in Pulse mode (DIP switch 3
set to ON), a 250 millisecond pulse is output each time a vehicle enters the loop detection area.
When in Presence mode (DIP switch 3 set to OFF), the channel’s output operates in True
PresenceTM Mode and the detector channel will hold a Call output as long as a vehicle is present and
power is not removed or reset applied. True PresenceTM hold time applies only for normal size
automobiles and trucks and for normal size loops (approximately 12 ft2to 120 ft2).
Sensitivity Boost (DIP Switch 4):
DIP switch 4 can be turned ON to increase sensitivity during the detect period without changing the
sensitivity during the no detect period. The boost feature has the effect of temporarily increasing the
sensitivity setting by up to two levels. When a vehicle enters the loop, the detector automatically
boosts the sensitivity level. As soon as no vehicle is detected, the detector immediately returns to
the original sensitivity level. This feature is particularly useful in preventing dropouts during the
passage of high bed vehicles. The factory default setting is OFF (no Sensitivity Boost).
Sensitivity (DIP Switches 5 and 6):
Each channel has four (4) sensitivity levels. DIP switches 5 and 6 select one of the four sensitivity
levels available as shown in the table below. Use the lowest sensitivity setting that will consistently
detect the desired type(s) of vehicle(s) that must be detected. Do not use a sensitivity level higher
than necessary.
Sensitivity Level (-∆L/L)
Switch 0.32% (0) 0.16% (1) * 0.08% (2) 0.02% (3)
5 OFF ON * OFF ON
6 OFF OFF * ON ON
* Factory default setting.
III. Reset:
Pushing the front panel mounted pushbutton labeled RESET or changing any DIP switch position
(except 1 or 2) will reset the detector. After changing the frequency selection switches, the detector must
be reset.
IV. Power Down Memory:
When power is removed, the detector automatically remembers the status of the loop. During the loss of
power, vehicles may enter or leave the loop detection area. When power is restored, the detector will
correctly determine the current loop status and output a Call if a vehicle is in the loop detection area. If
the loop detection area is vacant, a Call will not be output. (A power loss power dip of any duration will
not bring a gate arm down onto cars as they wait at the gate). IMPORTANT: After installing and
applying power to the Model AX2 detector, momentarily push the RESET button to clear the
Power Down Memory. This initializes the detector to the loops that are connected and clears the
memory of any previous loop information.
V. Failed Loop Diagnostics:
Each channel’s DETECT LED indicates whether or not the loop connected to the channel is currently
within tolerance. If the loop is out of tolerance, the LED indicates whether the loop is shorted (one Hz
flash rate) or open (10 Hz flash rate). If and when the loop returns to within tolerance, the DETECT
LED will flash at a three flashes per second rate to indicate that an intermittent loop fault has occurred
and has been corrected. This flash rate will continue until another loop fault occurs, the detector is reset,
or power to the detector is interrupted. If a vehicle enters the loop detection area while the DETECT
LED is indicating an intermittent loop failure, the DETECT LED will turn on to indicate the presence of
the vehicle.
VI. Pin Connections:
Wire colors are for Reno A&E harnesses
Pin Wire Color Function
1 Black AC Line / DC +
2 White AC Neutral / DC Common
3 Orange Channel 1 Loop
4 Green Channel 1 Loop
5 Yellow Channel 2 Loop
6 Blue Channel 2 Loop
7 Gray Channel 2 Relay, Normally Open (N.O.)
8 Brown Channel 2 Relay, Common
9 Red No Connection
10
Violet, or
Black / White Channel 1 Relay, Normally Open (N.O.)
11
White /Green or
Red / White Channel 1 Relay, Common
VII. Warnings:
Separately, for each loop, a twisted pair should be created consisting of only two (2) loop wires running
the entire distance from the loop to the detector (including runs through all wiring harnesses) at a
minimum of six (6) complete twists per foot. For trouble free operation, it is highly recommended that
all connections (including crimped connectors) be soldered.