Avlite AV-OL-MI Supplement

"We Believe Technology
Improves Navigation."
Medium Intensity
Obstruction Light
AV-OL-MI
Installation & Service Manual - V3.0

2Medium Intensity Obstruction Light
AV-OL-MI
Version No. Description Date Reviewed Approved Design
3.0 (Current) AV-OL-MI Product Update November 2021 P. Naidu W. Evans M. Sugars
Manual Update Register

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Contents
1.0 Introduction................................................................................................................................................................................... 4
2.0 Technology .....................................................................................................................................................................................5
3.0 AV-OL-MI Model.......................................................................................................................................................................... 6
4.0 AV-OL-MI Data Sheet ..................................................................................................................................................................8
5.0 Safety Information....................................................................................................................................................................... 9
6.0 Operation and Setup..................................................................................................................................................................10
6.1 GPS Syncronisation ..............................................................................................................................................................10
7.0 Unpacking, Installation and Wiring ....................................................................................................................................... 11
7.1 Unpacking............................................................................................................................................................................... 11
7.2 Installation and Wiring ....................................................................................................................................................... 11
7.3 Testing Procudure ................................................................................................................................................................15
8.0 IR Remote Control ......................................................................................................................................................................16
9.0 Maintenance and Servicing......................................................................................................................................................18
10.0 Troubleshooting ....................................................................................................................................................................... 20
11.0 Warranty ..................................................................................................................................................................................... 20
12.0 Notes............................................................................................................................................................................................ 21

4Medium Intensity Obstruction Light
AV-OL-MI
1.0 Introduction
Congratulations! By choosing to purchase an Avlite light, you have become the owner of one of the most advanced
obstruction lights in the world.
Avlite Systems draws on more than 25 years experience in the design and manufacture of navigation aids, and
particular care has been taken to ensure your light gives years of trouble free service.
As a commitment to producing the highest quality products for our customers, Avlite has been independently certied
as complying with the requirements of ISO 9001:2015 quality management system.
By taking a few moments to browse through this booklet, you will become familiar with the versatility of your light,
and be able to maximise its operating function.
Please remember to complete the Avlite warranty registration at www.avlite.com.

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2.0 Technology
Avlite Systems is a world-class lighting systems manufacturer with a proven reputation for rapid, innovative, and agile
technology solutions designed specically for defence, government, civil and humanitarian aid operations in the most
remote, toughest environments.
Electronics
Avlite employs leading in-house electronic engineers in the design and development of software and related circuitry.
All individual electronic components are sourced directly by Avlite procurement sta ensuring that only the highest
quality components are used in our products.
LED Technology
All Avlite lights use the latest advancements in LED (Light Emitting Diode) technology as a light source. The major ad-
vantage of LED’s over traditional light sources is well established in that they typically have an operational life in excess
of 100,000 hours, resulting in substantial savings to maintenance and servicing costs.
Precision Construction
Commitment to investing in the design and construction of injection-moulded parts including optic lenses, light bases
and a range of other components ensures that all Avlite products are of a consistent and superior quality.
Optical Performance
Avlite manufactures a range of aviation LED lenses moulded from multi-cavity dies. The company has superior in-
house lens manufacturing capabilities to support outstanding optical performance.
Award-winning, Patented Technology
Several United States and Australian patent registrations are held on Avlite’s range of innovative designs, with other
regional patents pending in Canada, United Kingdom and Europe.

6Medium Intensity Obstruction Light
AV-OL-MI
3.0 AV-OL-MI Model
The AV-OL-MI is a red, medium intensity LED obstruction beacon designed to comply with either ICAO MIOL Type B or
Type C, or FAA L-864 requirements. The model is illuminated for night operation as either a steady burning (ICAO Type
C only) or ashing (ICAO Type B or FAA L-864) beacon that can be used for marking obstacles from 45 metres above
ground, such as telecommunication towers, wind turbines, buildings and other tall structures.
Avlite’s LED obstruction lights oer an ultra bright, energy ecient and cost eective lighting solution. The light
xture is available in two congurations, universal DC (24–48VDC) or universal AC (90–264VAC).
The light xture incorporates internal diagnostic checking and an alarm contact for remote monitoring. The alarm relay
will be released whenever there is a problem e.g. no power, supply voltage too low, LED failure, etc. The alarm relay
will remain energized during the day when operating normally.
3.1 Available Options
• Controller wih Satcom and GSM Connectivity (See our AV-OL-CTRL Controllers)
• Solar add-on
• Mounting xtures

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Impact modied UV-
stabilised acrylic lens
Automatic night
operation
200 mm bolt pattern
for ease of intallation
Multiple LED Optic
7-stage powder coated
aluminium base
Technical Illustrations
[9.06in]
230mm [7.87in]
PCD 200mm
[7.07in]
180mm

8Medium Intensity Obstruction Light
AV-OL-MI
4.0 AV-OL-MI Data Sheet
DC UM
Light Characteristics
Light Source LED
Colour Red/IR
Peak intensity (cd) Complies with ICAO Medium Intensity Type B and C
Horizontal Output (degrees) 360
Vertical Divergence
(degrees)
As per ICAO specications
Reector Type Multi LED Optic
Operation Mode
Adjustment
User adjustable between dusk till dawn and 24 hour operation
LED Life Expectancy (hours) <100,000
Electrical Characteristics
Operating Voltage 24-48 VDC 90-264 VAC - 50/60 Hz
Peak Power (W) 60 W 80 VA
Average Power (W) Type B: 8 W
Type C: 25 W
L-864: 7 W
Type B: 12.3 VA
Type C: 38.5 VA
L-864: 10.8 VA
Circuit Protection Integrated
Temperature Range -40 to 55oC
Physical Characteristics
Body Material 7-stage powder-coated aluminium
Lens Material Impact modied UV stabilized acrylic
Lens Diameter (mm/inches) 230 / 9
Mounting (mm/inches) 200 / 7.07 bolt pattern
Height (mm/inches) 151 / 6
Width (mm/inches) 230 / 9
Mass (kg/lbs) 5.5 / 12.3
Service Life 12 years plus
Environmental Standards
Shock MIL-STD-202G, Test Condition G, Method 213B
Vibration MIL-STD202G, Test Condition B, Method 204
Wind Speed Up to 240 kph / 150 mph
Humidity 0 to 100%
Compliance
EMC EN61000-6-4:2019
EN61000-6-2:2019
Quality Assurance ISO9001:2015
ICAO Medium Intensity Obstruction Light - Type B and C
Other
Warranty 5 year warranty
Options Available Add on solar system for DC variant.
Mounting accessories.
Obstruction Controller with SATCOM or GSM available.
Turn-key kit based on structure.
Terms and Conditions Please refer to the light installation manual for further
specications.
Warranty Terms and Conditions - www.avlite.com

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5.0 Safety Information
Before proceeding with installation or service, make sure the following conditions are met:
• Ensure power lines are not ‘live’ (NO ELECTRICAL HAZARD)
• Avoid touching live circuits!
• Avoid touching any component or any part of the circuitry while the unit is operating. Do not change components
or make adjustments inside the unit with power on.
• Make sure the light xture mounting is vertically aligned to guarantee the required beam pattern of the aireld
light.
• Make sure any nearby obstacles do not impede the lights’ beam pattern.
• When installing, comply with all local electrical code(s).
• Mains power should always be disconnected when work is being done in close proximity to electrical ttings, and
electrical work should only be done by a licensed electrician.
• Operate the light only within the indicated electrical ratings and product usage instructions.
• To ensure that the light and peripheral equipment function safely and correctly, use cable in compliance with the
eective local electrical code.
• Do not stare at the LED or shine the LED into your eyes or those of another person.
• Dispose of the product according to the local laws and regulations for your region, for example, at a recycling
centre that accepts electronic devices.
• Ensure the tower or mast is grounded (NO RF HAZARD).
• Check the mast lighting circuit is not faulty.
• Make sure the mounting pole is vertically aligned to guarantee the required beam pattern of the obstruction light

10 Medium Intensity Obstruction Light
AV-OL-MI
6.0 Operation and Setup
When powered up, the light will constantly check day/night status using its internal ambient light sensor. The ambient
light sensor averages its measurement for 30 seconds.
FAA: By default the lights turn ON when the ambient light decreases to not less than 35 footcandles (376.7 lux) and
turn OFF when the ambient light decreases to not more than 60 footcandles (645.8 lux).
ICAO: By default the lights turn ON when the ambient light decreases to not less than 100 lux and turn OFF when the
ambient light increases to not more than 150 lux.
If the light detects a LED failure the alarm relay can be used to provide a feedback to the user.In night mode, the MI is
illuminated red and either ashes (for ICAO Type B or FAA L-864) or remains steady burning (for ICAO Type C). In day
mode, the light will not be illuminated.
Light intensity & operation mode setting for FAA or ICAO compliant light xture
The xture will be supplied with either the FAA or ICAO compliant optic as specied by product type. The MI comes
preset to the intensity setting required to produce either an FAA (L-864) or ICAO (Type B or Type C) photometric
prole in dusk-till-dawn mode and does not need to be set by the user.
Note: The ICAO Model and FAA Model have their own unique optic. The ICAO model cannot be used for FAA purposes
and the FAA model cannot be used for ICAO purposes. The model required needs to be specied at the time of order.
6.1 GPS Syncronisation
Avlite has utilised the latest advancements in GPS technology to develop an internal synchronisation system that is
incorporated into the lights. Using overhead satellites, multiple obstruction lights set to the same ash pattern are able
to ash in synchronisation (for MI Type B or FAA L-864 during night operation only). No additional power supplies,
aerials or control systems are required, and with its microprocessor- based system, the GPS option is specically
designed to provide maximum reliability and performance over a wide range of environmental conditions.
Operating Principle
Each light operates independently and requires no operator intervention. A minimum of 4 satellites need to be in view
for the built-in GPS receiver to collect time data. At dusk, the light sensor will turn the light on. If time data is available,
the MI will come on synchronised to every other obstruction light with the same selected ash code. Synchronisation is
achieved using an internal algorithm based on the highly accurate time base and time data received from the satellites.
The satellite data is provided from a number of earth stations using atomic clocks as the time base. Continuous self-
checking ensures that the lights will continue to run in synchronisation.
Light Activation
At power-up the microprocessor checks that the internal GPS module is programmed correctly and is able to provide
valid time base and time data. Once outside with a clear view of the sky, valid data should become available within 20
minutes.
Note: Lights will not synchronise if dierent ash codes are selected.

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7.0 Unpacking, Installation and Wiring
7.1 Unpacking
Unpack all hardware and inspect for damage. If there is any damage, please contact your Avlite Oce.
Retain original packing material for possible future use in shipping.
7.2 Installation and Wiring
Mount the MI light directly to the top of the tower or installation structure either by securing it to any appropriately
reinforced mounting point with a 200mm PCD or by attaching an optional Avlite Right Angle Pole Mounting Bracket
(for medium intensity xtures) to the tower and bolting the MI to the bracket. The obstruction light is manufactured
with an input power cable of length dened at the time of order. One end of the input power cable is pre-terminated
at the light xture.
Connect the provided input power cable to the corresponding power source in accordance with in accordance with the
AC or DC wiring diagrams shown on the following pages (as specied by product type).
Note: Make sure the mounting pole is vertically aligned to guarantee the required beam pattern of the obstruction
light. Make sure the light’s beam pattern is not disturbed by any nearby obstacles
WARNING:
LED lights contain glass components. Do Not Drop.
Always follow the instructions outlined in the product manual when cleaning the
equipment. Improper cleaning methods and use of unauthorized cleaning agents
can damage equipment.
WARNING:
Do not stare into light emitting diode (LED) beams.
WARNING:
DO NOT connect directly to an unregulated power source. Connecting to an unregu-
lated source may result in damage.

12 Medium Intensity Obstruction Light
AV-OL-MI
AC Power Connection
The unit is designed to operate from a nominal AC voltage from 90VAC-264VAC.
Wire as follows:
• Line/Active = L1 (Brown for Australia, Europe and UK - Black for USA and Canada)
• Neutral = L2 (Blue for Australia, Europe and UK - White for USA and Canada)
• Earth = L2 (Green/Yellow for Australia, Europe and UK - Green for USA and Canada)
For location details of the terminals please refer below:
-A3
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AV-OL-MI-UM Manual Block Diagram
N/A
0
Wt(Kg) each:-
Material/Quantity
M.Osborne
N/A
N/A
General Tolerances
Linear
X
X.X
X.XX
±1.2
±0.3
±0.1
Angular
X
X.X
±1.0°
±0.5°
±2.0
±0.5
Radii
X
X.X Drawing Rev:-
Drawn:-
Approved:-
Checked:-
21/10/2021
-
Qty per Ass'y:-
Drawing No:-
File Name:-
Sheet
Scale
Projection
Next Ass'y:-
N.T.S
Model Rev:-
Sealite
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Material/Quantity
N/A
N/A
General Tolerances
Linear
X
X.X
X.XX
Linear
X
X.X
X.XX
±1.2
±0.3
±0.1
±1.2
±0.3
±0.1
Angular
X
X.X
Angular
X
X.X
±1.0°
±0.5°
±1.0°
±0.5°
±2.0
±0.5
±2.0
±0.5
Radii
X
X.X
Radii
X
X.X Drawing Rev:-
Drawn:-
Approved:-
Checked:-
-
Qty per Ass'y:-
Drawing No:-
File Name:-
Sheet
Scale
Projection
Next Ass'y:-
N.T.S
Model Rev:-
Sealite
H
G
F
E
D
C
B
A
8 7 6 5 4 3 2 1
H
G
F
E
D
C
B
A
8 7 6 5 4 3 2 1
H
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RS232RS232
ALARM
NO.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CONNECTOR
POWER
POWER
ALARM
ALARM
ALARM
RS232
RS232
RS232
RS422
RS422
RS422
IO-1
IO-1
SIGNAL
L2
GND
COMM
NO
NC
GND_B
RxD
TxD
GND_B
422-
422+
3V3
IN-1
7 8 9 10 11 12
LED driver
uP
LED
AV-OL-MI-UM Wiring Diagram
Light in
normal
operation
16
IO-1 GND_A
17
IO-1 OUT-1A
18
IO-1 OUT-1B
19
IO-1 3V3
IO-1 IN-2
Programming Port
IO-1
13 14 15 16 17
J3 J6 J5
RS422RS422
J4
IO-2
18 19 20 21 22
J7
20
21
IO-1 GND_A
22
IO-1 OUT_2A
IO-1 OUT_2B
1 2 3
AC/DC
POWER
1POWER L1
K. Kanade
25/10/21
J. Ohle
25/10/2021
Number Connector Signal
1 Power L1
2 Power L2
3 Power GND
4 Alarm COMM
5 Alarm NO
6 Alarm NC
7 RS232 GND_B
8 RS232 RxD
9 RS232 TxD
10 RS422 GND_B
11 RS422 422-
12 RS422 422+
13 IO-1 3V3
14 IO-1 IN-1
15 IO-1 GND_A
16 IO-1 OUT-1A
17 IO-1 OUT-1B
18 IO-2 3V3
19 IO-2 IN-2
20 IO-2 GND_A
21 IO-2 OUT_2A
22 IO-2 OUT_2B

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DC Power Connection
The unit is designed to operate from a nominal DC voltage from 24V to 48V.
Wire as follows:
• Positive supply (+) = +VDC (Brown)
• Negative supply (-) = 0V (Blue)
For location details of the terminals please refer below:
-A3
Visio 2016
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Drawn in:-
Units
Sheet Size:-
naturalFinish:-
AV-OL-MI-DC Manual Block Diagram
N/A
0
Wt(Kg) each:-
Material/Quantity
M.Osborne
N/A
N/A
General Tolerances
Linear
X
X.X
X.XX
±1.2
±0.3
±0.1
Angular
X
X.X
±1.0°
±0.5°
±2.0
±0.5
Radii
X
X.X Drawing Rev:-
Drawn:-
Approved:-
Checked:-
21/10/2021
-
Qty per Ass'y:-
Drawing No:-
File Name:-
Sheet
Scale
Projection
Next Ass'y:-
N.T.S
Model Rev:-
Sealite
H
G
F
E
D
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B
A
87654321
H
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A
87654321
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Block Diagram Rev1.vsdx
2of 2
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003080-000
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Drawn in:-
Units
Sheet Size:-
naturalFinish:-
AV-OL-MI-DC Manual Block Diagram
N/A
0
Wt(Kg) each:-
Material/Quantity
N/A
N/A
General Tolerances
Linear
X
X.X
X.XX
Linear
X
X.X
X.XX
±1.2
±0.3
±0.1
±1.2
±0.3
±0.1
Angular
X
X.X
Angular
X
X.X
±1.0°
±0.5°
±1.0°
±0.5°
±2.0
±0.5
±2.0
±0.5
Radii
X
X.X
Radii
X
X.X Drawing Rev:-
Drawn:-
Approved:-
Checked:-
-
Qty per Ass'y:-
Drawing No:-
File Name:-
Sheet
Scale
Projection
Next Ass'y:-
N.T.S
Model Rev:-
Sealite
H
G
F
E
D
C
B
A
87654321
H
G
F
E
D
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B
A
87654321
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+Vin
1 2 3 4 5
RS232RS232
ALARM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CONNECTOR
+VIN
-VIN
ALARM
ALARM
ALARM
RS232
RS232
RS232
RS422
RS422
RS422
IO-1
IO-1
SIGNAL
+VDC
-VDC
COMM
NO
NC
GND_B
RxD
TxD
GND_B
422-
422+
3V3
IN-1
6 7 8 910 11
DC/DC
LED driver
uP
LED
AV-OL-MI-DC Wiring Diagram
Light in
normal
operation
15
IO-1 GND_A
16
IO-1 OUT-1A
17
IO-1 OUT-1B
18
IO-1 3V3
IO-1 IN-2
Programming Port
-Vin IO-1
12 13 14 15 16
J3 J6 J5
RS422RS422
J4
IO-2
17 18 19 20 21
J7
19
20
IO-1 GND_A
21
IO-1 OUT_2A
IO-1 OUT_2B
Kulgaurav Kanade 25/10/2021
Number Connector Signal
1 +VIN +VDC
2 -VIN -VDC
3 Alarm COMM
4 Alarm NO
5 Alarm NC
6 RS232 GND_B
7 RS232 RxD
8 RS232 TxD
9 RS422 GND_B
10 RS422 422-
11 RS422 422+
12 IO-1 3V3
13 IO-1 IN-1
14 IO-1 GND_A
15 IO-1 OUT-1A
16 IO-1 OUT-1B
17 IO-2 3V3
18 IO-2 IN-2
19 IO-2 GND_A
20 IO-2 OUT_2A
21 IO-2 OUT_2B

14 Medium Intensity Obstruction Light
AV-OL-MI
Alarm Relay Output
In normal operation the relay is energised
• Terminal contacts COMM and NC of the relay are electrically closed
• Terminal contacts COMM and NO of the relay are electrically open
Whenever the LED is not lit due to a power failure and/or a LED failure the relay will not be energised.
• Terminal contacts COMM and NO of the relay are electrically closed
• Terminal contacts COMM and NC of the relay are electrically open
The alarm relay comes congured as follows:
• Relay normal operation (default, as described above)
The following alarm relay congurations are available as a special order. These must be specied at the time of order:
• Relay inverse operation (inverse functionality of the normal operation, used to conserve power)
• Relay disable (in case the relay is not required, used to conserve power)
Note: The alarm relay is intended for low voltage (SELV) connection only.
NOT FOR MAINS CONNECTION
Please contact AVLITE for further details.

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General Purpose Inputs and Outputs
The AV-OL-MI xture supports a minimum of ve discrete IOs via General Purpose Inputs (2) and Outputs (3) in order
to meet monitoring requirements as well as provide compatibility with our obstruction lighting controllers.
The I/O congurations must be specied at the time of order.
• General Purpose Inputs (IN-1 and IN-2)
Available Input Type Description
Disabled The input line will not be monitored.
Photcell Control The input line is used to control the state of the photocell/light sensor.
Input Low = Night
Input High = Day
OpMode Control The input line Is used to control the operation mode used by the lantern.
Input Low = Always On
Input High = Day and Night
• General Purpose Outputs (OUT-1 and OUT-2)
Available Output Type Description
Disabled The output line will remain inactive
Photocell Status The output line will show the status of the photocell/light sensor.
Open Contact = Night
Closed Contact = Day
LED Fault The output line will show the fault state of the LED monitoring.
Open Contact = Fault
Closed Contact = OK
Visible LED Fault
IR/NVR LED Fault
GPS Sync The output line will show the state of the GPS synchronisation.
Open Contact = Not Synchronised
Closed Contact = Synchronised
7.3 Testing Procedure
Note: Avlite recommends that all testing be done during the day.
Check function of the MI by carrying out the following:
a. Night mode test: Cover the MI xture and check night operation is functioning as expected. The MI should either
ash red (for Type B or L-864) or operate as a red, steady burning light (for Type C). .
b. Day mode test: Uncover the MI xture and check day operation is functioning as expected. The MI should no lon-
ger be illuminated.

16 Medium Intensity Obstruction Light
AV-OL-MI
8.0 IR Remote Control
Test Mode / Congure
Pressing the T/C button for up to 5 seconds places the light in Test Mode. The light will ash once in response to the
T/C button being pressed and then turn o.
Normal Operation
The light will return to normal operation once it has not detected a valid key press for 30 seconds. The light will ash
once to indicate it is returning to normal operation.
Read
Pressing the Read followed by one of the conguration keys shall cause the light to ash the congured value.
Example Key Sequences:
The light ashes the current battery status.
The light ashes the sunset level in Lux, followed by a 2 second gap, followed by the
sunrise level. Levels are in the range of 1 to 9.
The light ashes the Operational Mode. Modes are as follows:
1 ash = Always-On
2 ashes = Standby
3 ashes = Dusk-to-Dawn
Operational Mode
The light has three modes of operation: Always on, Standby Mode and Dusk-to-Dawn mode. These modes are
selected via the IR remote control.
In Always On mode, the daylight sensor is disabled and the lantern will remain ON.
In Standby mode, the lantern is turned o and the daylight sensor is disabled.
In Dusk-to-Dawn, the daylight sensor is enabled.
Read Operation mode
Always on mode
Standby mode
Dusk-to-Dawn mode
T/C
R
R
B
L
T/C
T/C
R B T/C
R
B
B
I
I
1 T/C
T/C
B I 2 T/C
B I 3 T/C
I

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Battery Status
This function reads the battery status. The response from the light is:
4 ashes = High Voltage
3 ashes = Good Voltage
2 ashes = Low Voltage
1 ashes = Cuto Voltage or below
Example Key sequence:
Error/Acknowledge Indication
If the key sequence is invalid, or an out of bounds value is attempted to be set, the light ashes 5 times for 1 second.
(The command then needs to be sent from the start.)
Example key sequence: (Set the intensity level to 5 – undened.)
The light ashes 5 times for 1 second.
When a key sequence has been entered successfully the light will respond acknowledgement with a 1 second ash.
B
R B T/C
I5 T/C

18 Medium Intensity Obstruction Light
AV-OL-MI
9.0 Maintenance and Servicing
Designed to be maintenance free the Obstruction Lights requires minimal attention, though the following maintenance
and servicing information is provided to help ensure the life of your Avlite product.
• Occasional cleaning of the dome lens may be required using a cloth and warm soapy water.
External 24V Battery System (SLA)
Red Status LED Name Voltage Description
Slow High 27.0V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 25.0V – 27.0V Voltage is correct for a charged battery
1 Quick Good Approximately 24.0V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 23.5V - 24.0V Voltage is a little low, but within expectations.
3 Quick Low Between 21.0V – 23.5V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 21.0V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled
External 36V Battery System (SLA)
Red Status LED Name Voltage Description
Slow High 40.5V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 37.5V – 40.5V Voltage is correct for a charged battery
1 Quick Good Between 36.0V - 37.5V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 35.0V – 36.0V Voltage is a little low, but within expectations.
3 Quick Low Between 32.0V - 35.0V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 32.0V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled
External 48V Battery System (SLA)
Red Status LED Name Voltage Description
Slow High 54.0V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 50.0V – 54.0V Voltage is correct for a charged battery
1 Quick Good Between 48.0V - 50.0V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 47.0V – 48.0V Voltage is a little low, but within expectations.
3 Quick Low Between 43.0V - 47.0V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 43.0V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled

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24V DC Supply System
Red Status LED Name Voltage Description
Slow High 30.0V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 24.0V – 30.0V Voltage is correct for a charged battery
1 Quick Good Approximately 24.0V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 21.6V - 24.0V Voltage is a little low, but within expectations.
3 Quick Low Between 19.2V – 21.6V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 19.2V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled
36V DC Supply System
Red Status LED Name Voltage Description
Slow High 45.0V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 36.0V – 45.0V Voltage is correct for a charged battery
1 Quick Good Approximately 36.0V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 32.4V – 36.0V Voltage is a little low, but within expectations.
3 Quick Low Between 28.8V - 32.4V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 28.8V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled
48V DC Supply System
Red Status LED Name Voltage Description
Slow High 60.0V and above Voltage is higher than expected, this may indicate a problem
with the solar regulator.
O Optimal Between 48.0V – 60.0V Voltage is correct for a charged battery
1 Quick Good Approximately 48.0V Voltage is correct, this is where the lantern returns to normal
operation
2 Quick Ok Between 43.2V – 48.0V Voltage is a little low, but within expectations.
3 Quick Low Between 38.4V - 43.2V Voltage is low, this is where the alarm relay is rst activated
4 Quick Flat 48.4V and below Voltage is at, this is where the main LEDs are turned o and
the at battery cuto is enabled

20 Medium Intensity Obstruction Light
AV-OL-MI
11.0 Warranty
Refer to Avlite website at www.Avlite.com.
Once the Flat Battery cuto condition is in eect, the lantern will not turn back on until it sees day light and the battery
voltage is above the 'OK' threshold for at least one minute.
Yellow Status LED Lantern Status Lantern Description
O Standby OFF Lantern is in Standby Mode
Quick Flashing
0.15s on, 0.15s o
Day to Night Transitioning
(Dusk Till Dawn Mode)
OFF Light is activating and will turn on after detecting 30
seconds of continuous darkness
2 Quick Flashes
every 2s
Operational, Not Sychronised ON Lantern is in Normal operating condition. it is not connect-
ed to any GPS synchronisation
1 Quick Flash
every 2s
Operational, Syncronisation in
Progress
ON Lantern is 're-syncing' with GPS. THe lantern re-sync's with
GPS every 15 minutes.
Slow Flashing
1.5s on, 1.5 o
Operational, Sychronised ON Normal operationg condition. Lantern is syncronised to
GPS-enabled lanterns.
2 Quick Flashes
every 11s
Operational, Sychronised as
Slave
ON Lantern is a Hard Wire Syncronised Slave.
10.0 Troubleshooting
Problem Possible Cause Solution
Light will not activate No power to light • Check battery terminals are properly connected.
• Check battery voltage is above the at battery
threshold.
Ambient lighting
conditions
• Ensure internal toggle switch is set to the ‘ON’
position.
• Ensure light is in darkness.
• Wait at least 60 seconds for the program to
initialise in darkness.
Light will not operate
for the entire night.
Insucient Charging • Expose light to direct sunlight and monitor
operation for several days. Avlite products
typically require 2.5-3.0 minimum hours of direct
sunlight per day to retain full autonomy. From
a discharged state, the light may require several
days of operational conditions to ‘cycle’ up to
full autonomy.
• Ensure solar module is clean and not covered by
shading during the day.
Lights are constantly
on during the day.
Incorrect Operation
Mode
• Check the Operational Mode setting in AvlitePro
is not set to ‘Always ON’