opto engineering LTBRZ3-C Series User manual

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LTBRZ3-C series | INSTRUCTIONS MANUAL
LIGHTING
LTBRZ3 series
INSTRUCTIONS MANUAL
LED bar lights with integrated driving electronics

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LTBRZ3-C series | INSTRUCTIONS MANUAL
Summary
1. Disclaimer ..................................................................................................................................................3
2. Safety notes...............................................................................................................................................3
3. Eye safety................................................................................................................................................... 4
4. Product EoL (end-of-life) handling .......................................................................................................4
5. Unpacking..................................................................................................................................................4
6. Cleaning and maintenance....................................................................................................................5
7. Product warranty .....................................................................................................................................5
8. Environment..............................................................................................................................................5
9. General description.................................................................................................................................6
10. Electrical specifications........................................................................................................................... 6
10.1 Illuminator connectors and daisy chain option......................................................................... 6
10.2 Cables..................................................................................................................................................8
10.3 Power supply ...................................................................................................................................10
10.4 Enable signals..................................................................................................................................11
10.5 Dimming ...........................................................................................................................................13
10.6 Led indicator....................................................................................................................................15
10.7 Optical layout and performances ...............................................................................................17
10.7.1 Led color options ...................................................................................................................17
10.7.2 Lens options............................................................................................................................19
10.7.3 Polarizer options ....................................................................................................................25
10.7.4 Illuminance data .....................................................................................................................27
10.7.5 Led current ripple ..................................................................................................................28
11. Dimensions..............................................................................................................................................29
12. Electromagnetic compatibility.............................................................................................................29

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1. Disclaimer
Always deploy and store Opto Engineering products in the prescribed conditions in order to ensure
proper functioning. Failing to comply with the following conditions may shorten the product lifetime
and/or result in malfunctioning, performance degradation or failure.
Ensure that incorrect functioning of this equipment cannot cause any dangerous situation or
significant financial loss to occur. It is essential that the user ensures that the operation of the
controller is suitable for their application. All trademarks mentioned herein belong to their
respective owners.
Except as prohibited by law:
▪All hardware, software and documentation are provided on an “as is” basis Opto
▪Engineering accepts no liability for consequential loss, of any kind
▪
Upon receiving your Opto Engineering product, visually examine the product for any damage
during shipping. If the product is damaged upon receipt, please notify Opto Engineering
immediately.
2. Safety notes
Please read the following notes before using this controller. Contact your distributor or dealer for
any doubts or further advice.
This device must not be used in an application where its failure could cause a hazard to human
health or damage to other equipment. Keep in mind that if the device is used in a manner not
foreseen by the manufacturer, the protection provided by its circuits and by its enclosure may be
impaired.
This is a low voltage device. As such, the potential difference between any combination of applied
signals must not exceed, at all times, the supply voltage. Higher voltages may cause a fault and can
be dangerous to human health.
This device has limited protection against transients caused by inductive loads. If necessary, use
external protection devices like fast diodes or, better, specific transient protectors.
When the device is switched off, there is still energy stored in the internal capacitors for at least five
minutes.
When operating the illuminator at the maximum brightness it can get very hot. The illuminator
should be positioned where personnel cannot accidentally touch it and away from flammable
materials. Never exceed the power ratings stated in the manual.
During normal operation, the case temperature may exceed ambient temperature by as much as
25 °C (45 °F). To prevent higher case temperatures, the product can be fixed over a metal plate

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3. Eye safety
LTBRZ3 series has been tested against EN 62471:2008 (photobiological safety of lamps and lamp
system). The norm classifies LED lightings in 4 distinct groups, according to their hazardousness
degree. For LTBRZ3 series, the risk group is reported in the table below.
Part Number
Color
Hazard-related
risk group
Guidance on control
measurement
LTBRZ3-C-R Series
Red, 630 nm
Exempt
-
LTBRZ3-C-G Series
Green, 530 nm
Group 1
-
LTBRZ3-C-B Series
Blue, 470 nm
Group 1
-
LTBRZ3-C-W Series
White, 6500 K
Group 1
-
LTBRZ3-C-IR Series
Infrared,
860nm
Group 1
IR emitted from this
product. Use appropriate
shielding or eye protection
Table 1: LTBRZ3 EN62471 risk group.
Important note: despite infrared light is invisible to the eyes, eye damage may occur. To know if
the illuminator is ON, please refer to led indicator. In all cases, Opto Engineering recommends the
use of protection glasses.
4. Product EoL (end-of-life) handling
Observe the following guidelines when recycling this equipment or its components.
Production of this equipment required the extraction and use of natural resources. The equipment
may contain substances that could be harmful to the environment or human health if improperly
handled at the product’s end of life. In order to avoid release of such substances into the
environment and to reduce the use of natural resources, we encourage you to recycle this product
in an appropriate system that will ensure that most of the materials are reused or recycled
appropriately.
This symbol indicates that this product complies with the applicable European Union
requirements according to the WEEE (Waste Electrical and Electronic Equipment)
Directive 2012/19/EU
5. Unpacking
Products are packed in our factory, using suitable materials for a safe transport through the usual
means of transportation, in Italy and internationally. However, a damaged package must be
reported to the carrier on delivery.
To open the package, do not use any cutting blade to avoid product damaging.

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6. Cleaning and maintenance
Important note: clean the product when it is unplugged or switched off.
Use a soft and dry cloth. Do not use any abrasive material. Do not use any cleaning solvent or
aggressive chemical product.
For cleaning metal surfaces, we recommend to use isopropyl alcohol.
For cleaning acrylic, polycarbonate and plastic surfaces use an alcohol-free spray cleaner.
Cleaning with compressed air is not recommended.
7. Product warranty
The device warranty is 12 months from the effective delivery date with reference to the device serial
number.
The warranty covers the replacement or repairs of the defective part (components, device or part
of it) with the exclusion of dismantling and shipping costs.
The replacement of one or more components does not renew the warranty period of the entire
device. The manufacturer cannot be held liable for any compensation for whatever reason and the
buyer renounces any claims for costs or damages to third parties due to any machine downtime.
8. Environment
The following tables provides environmental specifications:
Feature
Specification
Operating temperature
0°C to 40°C
Storage temperature
0°C to 50°C
Relative humidity
20-85% non-condensing
IP class
IP40
Installation
Indoor use only
Operation outside the allowed temperature range can damage the product. For best performance
and to protect the product from damage, keep the housing temperature in the specified operating
temperature range.
Observe what follows:
▪for maximum heat dissipation, affix the illuminator to a heat sink or to a metallic plate, using
the 4 mounting holes;
▪use mounting base and heat sink with large surface areas and high thermal conductivity;
▪reduce ambient temperature, for example, shielding some heat sources;
▪provide ventilation or other active cooling of illuminator, mounting base, and heat sink.

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9. General description
The LTBRZ3 is a 300mm linear LED illuminator featuring an integrated low ripple constant current
driver. LTBRZ3-C is designed for continuous mode operation. NPN or PNP triggers can be used to
turn on and off the light. Light intensity can be adjusted by 0-10 VDC analog intensity line or set
manually by an external accessible potentiometer. The LTBRZ3-C can be connected forming a
daisy-chain configuration composed by a maximum number of 4 modules.
10. Electrical specifications
10.1 Illuminator connectors and daisy chain option
The LTBRZ without daisy chain option is equipped with a single M12 A-type circular industrial male
connector. With a single input connector, the product is design to operate as a stand-alone module.
The single connector acts as input port for both power supply and control signals.
Figure 1: LTBRZ3 with input connector.
The LTBRZ with daisy chain option (-DC) is design to operate as stand-alone unit or connected
together with multiple units. The product is equipped with two M12 A-type circular industrial
connectors. The input connector is male, while the output connector is female. The purpose of the
output connector is to let multiple units being connected together.
Figure 2: LTBRZ3 with input and output connectors.
Input connector
Input connector
Output connector

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Daisy-chain operation allows up to 4 modules to operate sharing both power and control signals.
This operation mode has the purpose to save wiring complexity and optimize space and harness
displacement.
Figure 3: LTBRZ3 connection diagram for daisy-chain configuration.
The pinout of the M12 connectors is the same for each configuration and is reported in the drawing
and table below. Output connector (right one) is physically present only if product has daisy-chain
(-DC) option.
Figure 4: M12 input and output connectors pinout.
Pin #
Signal
Description
Mode
I/O cable color
1
Supply +24V
Power supply +24V
-
Brown
2
NPN Enable
NPN enable input
Active low
White
3
Supply GND
Power supply GND
-
Blue
4
PNP Enable
PNP enable input
Active high
Black
5
Analog dimming
Analog
0 to 10V
Grey or Green
Table 2: M12 connectors pinout and signals.
Input connector
Output connector
1
2
4
3
5
5
1
2
3
4
Supply + control

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Important notes:
Do not use output connector as power and control source.
In daisy-chain configuration, do not connect more than 4 modules.
Without respecting these notes, product damage may occur and warranty will be void.
10.2 Cables
The illuminator is provided without cables. Appropriate cable must be ordered separately according
to the table below.
Part
number
Description
CBLT014
Illumination cable PVC black, side 1 M12 female connector straight, side 2 cable
end, 5 ways, 5m length
CBLT015
Illumination cable PVC black, side 1 M12 female connector right angled, side 2
cable end, 5 ways, 5m length
CBLT016
Illumination jumper cable PVC, side 1 M12 male connector straight, side 2 M12
female connector straight, 5 ways, 0.5m length
CBLT017
Illumination jumper cable PVC, side 1 M12 male connector straight, side 2 M12
female connector straight, 5 ways, 1m length
CBLT018
Illumination jumper cable PVC, side 1 M12 male connector straight, side 2 M12
female connector straight, 5 ways, 2m length
Table 3: available cable list.
Supply + control
Supply + control

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CBLT014 or CBLT015
CBLT016, CBLT017 or CBLT018
CBLT014 and CBLT015 are designed to be used for connecting the input port to the power supply
and control unit.
CBLT016, CBLT017 and CBLT018 are designed to be used for connecting the output port of a
module to the input port of another one (daisy-chain interconnection).
The following diagram details a typical configuration with 4 modules, daisy-chain connected. The
total length of the cable is 6.5 m and we recommend to consider this value as maximum.
The example is useful to evaluate voltage drop across the cables with the following hypothesis:
▪DC power supply with a regulated output of 24.0V
▪CBLT014 used as cable for Line1 (5 m length)
▪CBLT015 as daisy-chain cable for Line2, Line3 and Line4 (0.5 m length)
▪LTBRZ3-C operating at full brightness, 18 W max power consumption for each module
In case of longer power supply cable needed, increase the section of the copper wires, especially
for the cable used for Line1. Please consider that CBLT014 … CBLT018 are AWG22 (0.33 mm²).
For improved immunity against external disturbance sources, use a single shielded cable, grounded
at the end opposite to the illuminator.
Supply + control
Supply + control
24.00 V
Line1
24.00-3.17=20.83 V
Line2
20.83-0.24=20.59 V
Line3
20.59-0.16=20.43 V
Line4
20.43-0.08=20.35 V

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Input voltage
a
17-18 V
19-20 V
Illuminator status
a
ON
a
ON
a
OFF
a
Line number
Length
Power handled
Voltage drop
over the line
Voltage at
input port
Line1
5.0 m
18 W x 4 = 72 W
3.17 V
20.83 V
Line2
0.5 m
18 W x 3 = 54 W
0.24 V
20.59 V
Line3
0.5 m
18 W x 2 = 36 W
0.16 V
20.43 V
Line4
0.5 m
18 W
0.08 V
20.35 V
Table 4: typical power consumptions and voltage drop across cables with 4 daisy-chain connected modules.
Important note:
LTBRZ3 series is equipped with a control circuit that monitors the power supply. This circuit turns
the illuminator OFF if the Voltage detected at the input port reaches a threshold value of 17-18V,
too low for a correct operation of the embedded led driver. In order to let the illuminator restart,
the voltage must reach 19-20V. The diagram below shows the behavior.
10.3 Power supply
The power supply voltage must be 24V. A dedicated and well-regulated power supply is required.
The external power supply must be capable off supplying the current required by the products and
is dependent by how many modules are connected in daisy chain mode.
Parameter
Value
Power supply voltage
+24 Vdc (+/- 5%)
Power consumption
18 W max.
Current consumption
750 mA typ.
Table 5: supply requirements for a single unit.
When multiple illuminators are connected in daisy-chain configuration, please consider these
values.
Parameter
Power supply current consumption
2 units
3 units
4 units
Power consumption
36 W max.
54 W max.
72 W max.
Current consumption
1.5 A typ.
2.25 A typ.
3.00 A typ.
Table 6: supply requirements for multiple uns.

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10.4 Enable signals
LTBRZ3-C Series can be turned ON or OFF by applying proper signals to the input pins named PNP
enable and NPN enable.
Signal
Value
Safety range
PNP enable
Apply >4V to turn on the light
0V to 24V
NPN enable
Apply <1 to turn on the light (connect to GND)
0V to 24V
Table 7: PNP and NPN signals operating range.
Leave signals unconnected if not used
Do not try to force both PNP and NPN simultaneously.
The table below lists typical current consumption for both lines (PNP, NPN) and is valid for a single
module.
Driving the enable with a 3.3 V signal is not recommended.
Signal
Voltage
Current consumption
PNP enable
5 V
3 mA
PNP enable
12 V
7.5 mA
PNP enable
24 V
15 mA
NPN enable
0 V
12 mA
Table 8: PNP and NPN signals power requirements for a single unit.
When multiple illuminators are connected in daisy-chain configuration, please consider the current
consumptions listed below.
Signal
Voltage
PNP/NPN current consumption
2 units
3 units
4 units
PNP enable
5 V
6 mA
9 mA
12 mA
PNP enable
12 V
15 mA
22.5 mA
30 mA
PNP enable
24 V
30 mA
45 mA
60 mA
NPN enable
0 V
24 mA
36 mA
48 mA
Table 9: PNP and NPN signals power requirements for multiple units.

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The Graphs below show typical turn-on behavior. The delay between the rising edge of the trigger
signal (green) and the 50% of the light output signal (yellow) is ~344us.
Figure 5: turn-on behavior.
The Graph below shows typical turn-off behavior. The delay between the falling edge of the trigger
signal (green) and the 50% of the light output signal (yellow) is ~22us.
Figure 6: turn-off behavior.
Acquisitions are taken with a Ton time = 1ms and a Frequency = 10 Hz.
PNP enable signal
Light intensity signal
Light intensity
signal
PNP enable signal

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10.5 Dimming
Dimming (brightness adjustment) of the light is provided in two ways:
➢Dimming PIN on the connector (PIN #5).
Signal
Adjustment range
Maximum range
Analogue dimming
1V to 10V
0V to 24V
Table 10: Analogue dimming signal operating range.
➢External potentiometer with 270° turning range. To adjust the potentiometer, use a flat
blade screwdriver 0.4x2.5 [mm].
The table below shows the LED brightness as a function of Analogue dimming voltage in three
different gain conditions (Gain 0, minimum and maximum). Please note what follows:
➢With analogue dimming pin floating (unconnected), the potentiometer does not affect
brightness adjustment, which is fixed to minimum level (30%);
➢With analogue dimming voltage between 0V and 1V, the potentiometer does not affect
brightness adjustment, which is fixed to minimum level (30%);
➢With analogue dimming voltage between 1V and 10V, the potentiometer affects brightness
adjustment according to the table below
➢With analogue dimming voltage between 11V and 24V, the potentiometer affects brightness
adjustment and allows a modulation between minimum level (30%) and maximum level
(100%);
Gain min.
min.min.min
.
Gain Max.
Potentiometer
Gain
0

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Table 11: LED brightness as a function of Dimming voltage and Gain.
The following graph shows the LED brightness response as a function of analogue signal for Gain
= 0. The behavior is very linear between 1V and 10V.
Figure 6: LED brightness VS analogue dimming voltage.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0 5 10 15 20
Brightness [%]
Analogue dimming voltage [V]
Brightness VS Analogue dimming
Dimming voltage
[V]
LED brightness [%]
Gain
min
Gain
0
Gain
max
0
30%
30%
30%
1
30%
30%
46%
2
30%
39%
58%
3
30%
47%
70%
4
30%
54%
82%
5
30%
62%
94%
6
35%
70%
100%
7
39%
78%
100%
8
43%
86%
100%
9
47%
94%
100%
10
50%
100%
100%
11-24
30%
100%
100%

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The table below lists typical current consumption for analogue dimming line and is valid for a single
module.
Signal
Voltage
Current consumption
Analogue dimming
0 V
~ 0.000 mA
Analogue dimming
1 V
0.025 mA
Analogue dimming
5 V
0.125 mA
Analogue dimming
10 V
0.250 mA
Analogue dimming
24 V
< 2 mA
Table 12: Analogue dimming signal power requirements for a single unit.
When multiple illuminators are connected in daisy-chain operation, please consider the typical
current consumptions listed below.
Signal
Voltage
Current consumption
2 units
3 units
4 units
Analogue dimming
24 V
4 mA
6 mA
8 mA
Table 13: Analogue dimming signal power requirements for multiple units.
10.6 Led indicator
LTBRZ3-C series is equipped with a RGB led indicator used to monitor both status and error
conditions. The table below describes the led behavior.
Led status and color
Illuminator status
Solid green
Power supply is present, illuminator is OFF.
Solid blue
Power supply is present, illuminator is ON.
Alternately flashing
Error condition is detected.
Table 14: LED indicator signalling behavior.
RGB Led indicator

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When a fault is detected, four consecutive led flashes indicate the presence of one or more error
conditions. The four flashes correspond to four possible error conditions, named E0, E1, E2 and
E3. The flashes timing diagram is reported in the diagram below. Each flash lasts for 0.5” (500ms)
and has a period of 1” (1s). The four flashes train is repeated every 6” (6s). The first flash
corresponds to E0 (error0), the second to E1 (error1) and so on. If the E0 flash is green, there is no
error, if red, error is present.
Example 1:
1st flash is green
2nd flash is red
3rd flash is green
4th flash is green
This means that only error1 (E1) has been detected.
Example 2:
1st flash is red
2nd flash is red
3rd flash is green
4th flash is green
This means that two errors have been detected, error0 (E0) and error1 (E1).
The following table lists how errors are coded.
Error code
Description
E0
Driver overtemperature detected
E1
Led board overtemperature detected
E2
Supply voltage error (undervoltage shutdown occurred)
E3
Power supply failure detected
Table 15: Error code explanation.

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When at least one error is present, the LED is instantly switched OFF and the illuminator enters the
error signaling routine, that continues until error(s) persist. The electronics automatically re-starts
normally operation in case of error resetting.
Particular attention must be paid to error code E1. This means that the LED board on the back of
the illuminator has reached a too high temperature. This can be caused by:
➢Environmental temperature > 40°C
➢Ventilation not present
➢Temperature of the attaching mechanics too high
10.7 Optical layout and performances
LTBRZ3 Series is composed by 12 high-power LED sources, disposed as a linear array. Illumination
area has dimensions 295 x 25 mm. Led array is covered by a plastic protection window.
The series can be equipped with different options, detailed below.
10.7.1 Led color options
LTBRZ3 series offer a selection of different led colors ranging from visible to infrared. Five colors
are available as default, others are upon request.
Option
Color
Peak wavelength
FWHM
Color temperature
-B
Blue
470 nm
25
-
-G
Green
530 nm
35
-
-R
Red
630 nm
20
-
-IR
Infrared
860 nm
40
-
-W
White
-
-
6500 K
Table 16: LED color options.

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The following graphs show the typical emission spectra for the default color series. Reported data
are measured.
Figure 7: Red, Green, Blue and Infrared color spectrum.
Figure 8: White color spectrum.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
300 400 500 600 700 800 900 1000
Relative intensity [%]
Wavelength [nm]
Spectral emission (Blue, Green, Red, Infrared)
Red Green Blue Infrared
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
300 400 500 600 700 800 900 1000
Relative intensity [%]
Wavelength [nm]
Spectral emission (White)

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10.7.2 Lens options
The table below list the 6 lens options available for LTBRZ3 series. Others are upon request.
Option
Description
-10
Each led emits a circular beam with aperture of ~10°
-20
Each led emits a circular beam with aperture of ~20°
-30
Each led emits a circular beam with aperture of ~30°
-50
Each led emits a circular beam with aperture of ~50°
-EL
Each led emits an elliptical beam with
horizontal aperture of ~35° and vertical aperture of ~15°
-BL
LEDs emits a uniform pattern suitable for backlight applications
Table 17: Lens options.

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•Option [-10]:
this configuration is provided with 12 lenses mounted on Leds. Each lens emits a beam with a
circular aperture of ~10°. A weak diffusing window is placed in front of lenses. The purpose of the
diffuser is to reduce glare and homogenize the beam. This configuration projects a narrow beam
of light ideal for long working distances and applications that require pseudo collimated light. The
pictures below show the light pattern at three different working distances.
Figure 9: estimated intensity pattern for option (-10), working distance: 300mm, grid spacing: 50mm, color: white.
Figure 11: estim estimated intensity pattern for option (-10), working distance: 500mm, grid spacing: 50mm, color:
white.
Figure 10: estimated intensity pattern for option (-10), working distance: 1000mm, grid spacing: 50mm, color: white.