EMX LRS-C1 User manual

EMX Industries, Inc. Tech support: 216-518-9889 1/8
Document No.10310204 Rev 1.1 [e-mail]
LRS™
Single Cut Magnetoresistive Vehicle Detector
Instruction Manual
The Loop Replacement System (LRS) features advanced 3-axis, magnetoresistive sensing technology.
The small size of the LRS allows for easy installation in pavement with a single saw cut. It provides cost
savings on labor and materials when compared to the multiple cuts and corner reliefs required for the
installation of inductive loops. The sensor measures the Earth’s magnetic field and responds
to disturbances caused by ferrous objects. Three sensing elements provide magnetic field measurement
in the X, Y and Z axis, improving detection sensitivity. The LRS flat pack (FP) and direct burial (DB) sensors
are also suitable for above ground installations, making them ideal for use in confined areas or hidden in
non-ferrous architectural components for security purposes. The LRS’ exciting new technology provides
a high-sensitivity, compact and cost-effective solution for reliable vehicle detection.
NOTE: When power is applied to the LRS-C1 controller and the LRS-FP or DB sensor is connected,
the settings on the controller will be sent to the sensor. The sensor stores these settings even when
disconnected from the LRS-C1. However, the controller is required to program and recalibrate
the sensor.
Specifications
LRS-C1 Controller LRS-FP and DB Sensor
Detection Range 5 ft (1.5 m) radius
Response Time 125 ms
Outputs SPDT relay NPN (open collector)
Fail safe in the event of a sensor failure or power loss
Output Current Rating Relay: 1 A @ 24-120 VDC 50 mA (max)
Connection 10 position screw terminal 5 conductor direct burial
Operating Environment -40º to 82ºC (-40º to 180ºF); 0 to 95% relative humidity
Housing Material ABS (plastic) LRS-FP: Polyamide
LRS-DB: PVC
Environmental Rating IP30 IP69K
Power 12-30 VDC and 24 VAC 12-30 VDC
Current Draw 40 mA (max) 10 mA (max)
Supply Protection Reverse polarity and fuse protected
Dimensions (L x W x H) 76 mm (3.0”) x 22 mm (0.9”)
x 70 mm (2.75”)
LRS-FP: 108 mm (4.3”) x
22 mm (0.9”) x 9 mm (0.3”)
LRS-DB: 102 mm (4.0”) x 27 mm (1.0”)
Weight 68 g (0.15 lbs) LRS-FP: 27 g (0.06 lbs)
LRS-DB: 43 g (0.09 lbs)

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Document No.10310204 Rev 1.1 [e-mail]
 LRS-C1 Controller (included, required to program and recalibrate the LRS-FP or DB)
 LRS-FP-50 Flat pack sensor 50’ lead-in wire
 LRS-FP-100 Flat pack sensor 100’ lead-in wire
 LRS-DB-50 Direct burial sensor 50’ lead-in wire
 LRS-DB-100 Direct burial sensor 100’ lead-in wire
 LRS-L Logic Interface (optional accessory, can be used to increase size of detection zone size
with multiple sensors or to set-up AB direction control logic)
Wiring Connections
*The shield (bare) wire on the sensor cable should be connected
to earth ground to help prevent electromagnetic interference.
Ordering
Information
Terminal Description Sensor
Shielded Cable
VIN1 Power (12-24 VDC/AC) --
VIN2 Power (12-24 VDC/AC) --
NO Relay – NO (normally open contact) --
COM Relay – COM (common contact) --
NC Relay – NC (normally closed contact) --
NPN_THRU Open Collector Output Terminal 6&7
NPN_THRU Open Collector Input WHITE
RED Sensor Communications A RED
GRN Sensor Communications B GREEN
V+ V+ (sensor positive power) BROWN
V- V- (sensor negative power) BLUE
External Earth
Ground Wire
Earth Ground (not connected on
LRS-C1)
SHIELD*
Operator
Connections
LRS
-
FP or
DB
Sensor
Connections
LRS-DB
LRS-FP
6&7
Connected
on board

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Settings & Display
Presence DIP Switch 8
Infinite presence mode causes the output to remain in detect mode as long
as the vehicle remains near the sensor. Normal presence mode causes the
output to reset after 5 minutes of detection. Do not use normal presence
mode in reversing loop applications.
Normal on
Infinite off
Detect-on-Stop™ DIP Switch 7 The Detect-On-Stop™ (DOS®) feature requires that a vehicle must come to a
complete stop near the sensor for a minimum of 1-2 seconds before the
output activates. Do not use the DOS® feature for reversing loop
applications.
DOS® On on
DOS® Off off
Output DIP Switch 6 The output feature provides the ability to toggle between pulse and presence
mode. When Pulse is selected, the output will be activated for approximately
500ms on vehicle entry or exit. When Presence is selected, the output will be
activated according to the setting on DIP switch 8.
Pulse on
Presence off
Pulse on
Entry/Exit
DIP Switch 5
When DIP switch 6 is on (Pulse), it will determine if the output relay pulses
when a vehicle is entering or exiting the detection zone. Exit on
Entry off
Delay DIP Switch 4 Turning on the Delay setting provides a 2 second delay before activating the
relay after the sensitivity threshold is met.
Delay On on
Delay Off off
Axis Settings DIP Switch
The LRS has the ability to detect in 3 dimensions (X, Y, Z axis).
In most applications, all three Axis Settings should be switched on.
For more information on axis settings, see Installation.
3 2 1
X-axis on
Y-axis on
Z-axis on
Sensitivity Setting
The 10
-position rotary switch allows for adjustment of the detection level. The sensitivity level
increases from position 0
(lowest setting) through 9 (highest setting). Typical applications require
a setting of 3 or 4. Adjusting the sensitivity level applies to all axes. The rotary
adjustment must
be set to a specific/whole number
. There are no half settings. For more information on sensitivity
settings, see
Installation.
Green & Red LED
The green LED indicates th
e detector is powered and operational. When the red LED is on,
a vehicle presence is detected
. When it is off, there is no presence detected.
ULTRAMETER
TM Sensitivity Display
The display shows the sensitivity setting required to detect a
vehicle near the sensor. To use this
feature, observe the display while a vehicle is moving into position near the sensor, note the
number displayed, then adjust the sensitivity setting to the displayed position. The display will
adjust from 9 for a weak s
ignal to 0 for a very strong signal. During normal operation, when a
vehicle is not on or near the sensor, the display is blank. The effects of cross
-traffic interference
can be observed on the display when the sensing area is vacant.
Sensor Calibration/Reset
Pressing the reset
button calibrates the sensor to the local magnetic field. This must be used
whenever the sensor is moved from its position or when any DIP switch settings are changed and
may be necessary if the sensor’s local magnetic environment has changed (see
Troubleshooting).

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Document No.10310204 Rev 1.1 [e-mail]
Installation
Read the following list of tips prior to beginning the installation process.
This will save significant time in the long run.
 Every time the settings are changed on the LRS-C1 or the sensor is moved, press the
RESET button on the LRS-C1.
 The LRS-FP and DB sensors are sensitive to minute changes in the magnetic field around them.
Power lines, transformers, and other electrical devices located in the vicinity of the sensor that
produce transients could cause disturbances in the magnetic field that may result in triggering the
detector. Avoid installation of the sensor near these devices.
 Do not mount on any moving surface, such as bridges or walkways that may vibrate under traffic.
The sensor must always be installed in such a way that it remains completely motionless.
Any movement will cause the sensor to trigger.
Sensor Installation
1. Determine the location for the LRS-FP or DB sensor installation. The sensor must be at least
6 feet away from all moving metal. If rebar is present in the roadway, the sensor must be
installed above it.
2. Tape the sensor and lead to the pavement and connect the sensor to the LRS-C1
(see Wiring Connections).
3. Connect the LRS-C1 to the operator according to the operator’s instructions.
4. Configure the DIP switch and sensitivity settings according to preferences (see Settings & Display
for more information). Press the RESET button on the LRS-C1 after changing settings.
5. Test the product. Without moving the sensor or the lead going to the sensor, drive a vehicle near
the sensor. When the vehicle is five feet from the sensor, “9” will be displayed on the ULTRAMETERTM
display. Once the vehicle is the desired distance from the sensor, take note of the number displayed
on the ULTRAMETERTM and change the sensitivity setting (10-position rotary switch) to match that
number. Move the test vehicle away from the sensor to remove it from the detection zone
(the ULTRAMETERTM display should be blank). Press the RESET button on the
LRS-C1 and do not move the sensor or lead. Retest the sensor by moving the vehicle into and out
of the detection zone to make sure the set-up and location are working as intended.

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Document No.10310204 Rev 1.1 [e-mail]
The LRS-FP and DB sensors have the ability to detect in 3 dimensions (X, Y, Z axis).
In most applications, all three axes should be switched on (DIP switch 1, 2, and 3).
 Note that the LRS-FP sensor allows for the best
implementation of the axis settings. The installer
knows the direction of all axes because of the
flat pack’s fixed orientation within the saw cut.
(See the axis diagram in the photo below.)
 The only known axis for the LRS-DB sensor is the
Y axis, which is in the same direction as the lead.
 To find the axis most affected by an unwanted
disturbance when using the LRS-DB, perform the
following procedure:
A. Calibrate the sensor with the disturbance removed.
B. Move the disturbing object into position.
C. Select each axis individually, observing the ULTRAMETERTM display for each.
D. Turn off the axis that causes the lowest number to appear due to the disturbance.
6. After the sensor is working correctly, cut the pavement according to the instructions starting below.
Use a hard sealant, such as epoxy, around the sensor. The sealant fill should not extend
above the roadway. Incorrect fill allows vehicle weight to press on and move the sensor in the
concrete, which will cause the sensor to go into detection. Press the RESET button on the
LRS-C1 once the sensor is in place.
7. Retest the product to ensure proper detection.
LRS-FP Installation
The flat pack requires a 2” x 3/8” x 6” cut in the pavement
for the sensor, with a 5/16” x 2” deep saw cut for the cable
lead. Backer rod should be place at a minimum of every
10-14”. Hard epoxy pavement sealant should then be
used to fill the cable and sensor cavities. Make sure
pavement sealant does not extend above roadway
surface.
TIP:
Sensor laying flat
Note: The Y axis is always the direction of the cable.
X axis
Sensor standing
Z
axis
Y
axis
Y
axis
Y
axis
X
axis

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LRS-DB Installation
For vertical installation, drill a 7” x 1.5” hole in the
surface with a 5/16” x 2” deep
saw cut exiting the cutout for the
communications /power cable. Backer rod
should be placed at a minimum of every
10-14”. Hard epoxy pavement sealant should
then be used to fill the cable and sensor
cavities. Make sure pavement sealant does
not extend above roadway surface.
When mounting above-grade, make sure that
the sensor is placed at a height to maximize the
sensitivity of the detector. This typically means
installing it at door level to prevent dropouts.
The maximum distance maintained between
the sensor and the vehicle should be less than
five feet.
The sensor should be secured to minimize any
movement that might provide false detections
or dropouts. Consideration should be made to
ensure the sensor is not mounted next to moving
metal (for example, barrier arm counterweight).
Securing the sensor may be accomplished with at least one 1” ID (internal diameter) plastic pipe/conduit strap.
If plastic straps are not available, aluminum may be used, but should be placed towards
the cable-end of the LRS-DB to avoid sensitivity related issues. The LRS-FP can be secured with cable ties and
suitable mounts.
The sensor can be installed inside of any non-ferrous architectural structures, such as fiberglass, plastic,
aluminum, etc.
Cabling should be enclosed in conduit to minimize environmental degradation.
Note: The Y axis is always the direction of the cable.
Y
axis
Y
axis

EMX Industries, Inc. Tech support: 216-518-9889 7/8
Document No.10310204 Rev 1.1 [e-mail]
Troubleshooting
Symptom Possible Cause Solution
No detection Sensitivity set too low
Aluminum vehicle
(non-ferrous)
With a vehicle within the desired proximity,
observe the ULTRAMETERTM display to find
the minimum sensitivity required for
detection.
The LRS is detecting changes in Earth’s
magnetic field caused by ferrous metal.
Aluminum is non-ferrous and will not be
detected. Aluminum vehicles will need to be
much closer to the sensor for steel
components on vehicle to be detected.
Red LED on constantly
(stuck in detection mode)
or ULTRAMETERTM display
shows a value when no car
is present
Local environmental
change (example: high
voltage lines, power
plants, newly introduced
steel in detection field of
LRS sensor), movement
of sensor
Surface sealant is above
pavement
Electromagnetic noise or
dirty power
Recheck wiring. Make sure earth ground is
secure and connected to the shield wire on
the LRS-FP or DB. Recalibrate the sensor
using RESET button and see if problem
reoccurs. If the issue is still present,
the sensor may need to be moved or
adjust an axis setting (DIP switch 1, 2, or 3)
and push RESET button to undetect new
environmental change.
If surface sealant projects above the surface
of the pavement when a vehicle drives over
the sealant, it will push down on the sensor
and cause it to move. If the sensor moves, it
will be in permanent detection. Remove the
sealant and replace it with a hard epoxy
sealant that does not project above the
surface of the pavement. Recalibrate sensor
using RESET button.
Enabling the detection delay by turning on
DIP switch 4 might help alleviate the
problem. The system will now have a
2 second delay before activating after the
sensitivity threshold is met.
No green LED, red LED or
ULTRAMETERTM display on
No power from operator
or short circuit in sensor
1. Using a multimeter, check the voltage
across VIN1 and VIN2.
2. Unhook the LRS-FP or DB and see if
power returns to the LRS-C1 controller,
as indicated by the green LED on.
3. If power returns, replace the LRS-FP or
DB sensor.

EMX Industries, Inc. Tech support: 216-518-9889 8/8
Document No.10310204 Rev 1.1 [e-mail]
Warranty
EMX Industries, Inc. products have a warranty against defects in materials and workmanship for a period
of two years from date of sale to our customer.
Symptom Possible Cause Solution
Green LED flashes half
second on, half second off,
“E” “1” flashes on display
Communication failure 1. Check the communications and power
wiring to the sensor.
2. Cycle power to the control unit and
sensor.
Green and red LEDs flash
simultaneously, “E” “2”
flashes on display
Insufficient supply
voltage
1. Make sure the power supply is working
correctly and properly rated (see Wiring
Connections). If supply voltage is
confirmed to be correct with multimeter
and being supplied by operator, consider
using a separate power supply, such as
120 VAC to 12 VDC power converter
(minimum 100 mA).
2. Disconnect the sensor and see if power
returns to the controller, as indicated by
the green LED on.
Green LED flashes half
second on, half second off,
“E” “3” flashes on display
Damaged sensor
module
1. Cycle power to the LRS-C1 controller and
check if error code “E” “3” reoccurs.
2. If error reoccurs, replace the LRS-FP or
DB sensor.
Green LED slow flash Previous
communication failure
1. Check the connection between the
controller and sensor.
2. With no vehicle over the sensor, press the
RESET button to clear the error and
recalibrate.