Luminaire Design Guide

Contents
1.
System Information……………………………………………………………………………………………………….. 1
2.
System Dimensions………………………………………………………………………………………………………... 2
3.
Emitter Specifications…………………………………………………………………………………………………….. 4
4.
RF Driver Specifications………………………………………………………………………………………………….. 6
5.
RF Cable Specifications…………………………………………………………………………………………………... 7
6.
AC - DC Power Supply…………………………………………………………………………………………………….. 8
7.
Wiring Configuration……………………………………………………………………………………………………... 9
8.
EMI Electromagnetic Interference………………………………………………………………………………….. 11
9.
Optics Measurements……………………………………………………………………………………………………. 12
10. UV Shield Requirements…………………………………………………………………………………………………. 13
11. Gasket Specifications……………………………………………………………………………………………………… 14
12. Design Checklist……………………………………………………………………………………………………………… 16
13. Safety Guidelines……………………………………………………………………………………………………………. 17
14. Contact and Ordering Information…………………………………………………………………………………. 18
1. System Information
LEP™ System consists of:

An Emitter (light source)

RF Driver (28V electronic)

RF Cable (flexible coaxial) between the
Emitter and Driver
A Step-down AC - DC power supply (not supplied with
the system) is required to run the driver at 28V DC.
LEP™ STA 41 System
Product Features:
STA 41 series Emitter

Up to 45,000 directional lumens

Long life - 50,000 hours

Color rendering index up to 92

Compact Emitter Area (100mm²)

Forward Directional Output

Dimmable down to 20%

Digitally Controlled

Capable of 2:1 Fixture Uniformity
Product Selection Guide
Product Code
STA25-03
STA41-01
STA41-02
STA75-01
STA75-01
Initial Lumens
11,000
23,000
17,000
45,000
34,000
CCT Kelvin
5,600
5,200
5,200
5,200
5,000
CRI
70
72
92
75
90
Lifetime (hours)
50,000
50,000
50,000
50,000
50,000
Current
6.2 A
8.9 A
8.9 A
16.4. A
16.4. A
Secondary DC Voltage
24V
28V
28V
28V
28V
AC Power
160
270
270
500
500
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2. System Dimensions
[3.35]
85.1
[1.67]
42.5
[3.35]
85.1
[1.25]
31.7
[7.60]
193.0
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Lamp Series
Part Number 01-02716-XX
Connector Angle
Length (in)
Length (mm)
STA-25/41
12
Right
11.25
285.75
STA-25/41
07
Straight
21.25
539.75
STA-25/41
27-C
Right
20.65
524.51
STA-25/41
08
Straight
11.75
298.45
STA-75
29
Straight
14.15
359.41
STA-75
30
Right
13.65
346.71
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3. Emitter Specifications
Emitter Orientation
STA-25/41/75 series Emitters can only be operating facing downward and angled up to 30° maximum. Bulb
should not be facing beyond 30°. Keep bulb out of the red zone as shown.
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4. RF Driver Specifications
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5. RF Cable Specifications
Proper Cable Routing
Notes:

Cable is Semi-Rigid.

Make sure enough space is provided for
minimum allowed bending of RF Cable.

Avoid cable from touching any surfaces.

Avoid creating loops while routing cable.

Minimum bend radius on RF Cable is
0.5” (12.7mm).

RF cable connection should be hand tightened.
Check tightening torque to 15lb-in (1.7N-m)

Operating temperature range is –40°C to +150°C
PROPER BENDING
.5" (12.7MM) RADIUS
MINIMUM BEND
1.25" (31.8MM) MINIMUM
.5" (12.7mm) RADIUS
MINIMUM BENT
DO NOT BENT MORE
THAN 180 DEGREES
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6. AC-DC Power Supply
MANUFACTURER
INPUT VOLTAGE
OUTPUT VOLTAGE
PART NO.
INPUT FREQUENCY
WATTAGE
MAX. CURRENT
EFFICIENCY
POWER FACTOR
DIMENSIONS (LxWxH)
SURGE PROTECTION
UL
IP RATING
CONTACT
INVENTRONICS
100 - 277 Vac
24 Vdc
EUV-300S024ST
47 - 63 Hz
300w
12.5 A
INVENTRONICS
100 - 277 Vac
28 Vdc
EUV-300S028ST
47 - 63 Hz
300w
10.7 A
INVENTRONICS
277 - 480 Vac
28 Vdc
ESV-300S028ST
47 - 63 Hz
300w
10.7 A
INVENTRONICS
176-305 Vac
28 Vdc
EBV-300S028ST
47 - 63 Hz
500w
17.86 A
94%
94%
.96 - .99
.96 - .99
251x98x45mm
251x98x45mm
YES
YES
UL8750
UL8750
IP67
IP67
[email protected]
91%
.90 - .95
251x98x45mm
YES
UL8750
IP67
93%
92%
.95 - .96
.95 - .96
265x113x42mm 265x113x42mm
YES
YES
UL8750
UL8750
IP67
IP67
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INVENTRONICS
312 - 528 Vac
28 Vdc
ETV-300S028ST
47 - 63 Hz
500w
17.86 A
7. Wiring Configuration
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Basic Mode
To turn the lamp on and off using AC power
only (known as basic mode) the TxD wires
need to be shorted together as shown at left.
All control signals are bypassed in this mode.
Analog (1 - 10v) Dimming
Chart shows the response of the lamp to an
external analog voltage. The dimming range is from
20% to 200% light output. If the dim voltage is
below 0.5V at start, the lamp will ignore the dim
voltage until it increases above 0.5v
Off the shelf 0-10v or 1-10v analog dimmers can be
used directly with the driver. A potentiometer can
also be used to create a simple dimming circuit.
Digital Communications
A simple way to communicate with the lamp
using a digital signal (serial) via the TxD and RxD
lines. The network could consist of any standard
wireless, power line carrier, or other lighting
controls technology. You could also connect the
driver to your PC and communicate with the
light source using the LEP GUI (protocols and
software are available by contacting LUXIM’s
Occupancy or Motion Sensor
You can provide a control input (up to 24v) to
the SCI/Occupancy line to command the light
to bright or dim levels. These levels can be
preset into the lamp (contact Luxim’s
marketing support for details). A unique
feature of the LEP™ system is that you can
power most low voltage sensors using the DC
power source from the light fixture.
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8. EMI Electromagnetic Interference
Typical EMI enclosure construction.
General information
A
C
B
SPRING FINGERS
REFLECTOR
Luminaires used in general illumination are in most
cases required to EMI standards outlined in the
table below for radiated emissions. The LEP™ light
source emits a small amount of electromagnetic
radiation (less than 0.1 milliwatts). Though this
amount is not nearly enough to effect human
health, a luminaire sold in the US needs to meet
FCC requirements.
Test Method and Maximum Requirements
E
D
F
APPROVAL
LEVELS
DISTANCE
@ 3 METERS
DISTANCE
@ 10 METERS
DISTANCE
@ 30 METERS
Class A
(non consumer)
56.9
46.4
36.9
Class B
(consumer)
46.0
35.6
26
Note: This requirement may vary by location or country
A.
Emitter
B.
Spring Fingers
C.
EMC Enclosure
D.
80 OPI Mesh
E.
Conductive Elastomer Gasket
F.
Clamp Plate
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9. Optics Measurements
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10. UV Shield Specifications
Being a “non-jacketed” lamp, LEP™ fixtures require the use of glass
as protection from UV per UL1598
Wavelength NM
Transmission %
350
85
320
40
300
8
290
0.5
<290
0.1
A glass UV attenuation barrier shall be constructed of one of the
following:

Soda-lime glass having a minimum thickness od 4.0 mm (.157 in).

Another type of glass that has a minimum thickness of 3.0 mm
(.118 in) and complies with the ultraviolet transmission
requirements specified by UL1598.

Other types of glass with a minimum thickness of 3.0 mm (.118
in) if the luminaire, lamp and attenuation barrier comply with
the accepted effective UV power limits described in the ANSI/
IESNA RP 27 series of standards, and the luminaire is marked to
identify the lamp in accordance with Table 20.11, item 3.23.

Barrier must pass all independent laboratory requirements for
UV attenuation, impact, and breakage.
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11. Gasket Specifications
When gaskets are needed for luminaires, elastomer material is typically
used to provide dust, or weatherproofing. Off-the-shelf elastomer
gaskets that are exposed to a combination of light and heat can outgas;
the resulting fumes are often corrosive in nature. The corrosive
chemicals trapped inside the fixture can adversely react with the LEP™
components including the quartz bulb. White deposits on the bulb
outer surface have been observed in fixtures with excessive outgassing.
This phenomenon can cause significant lumen depreciation and
severely impact bulb life.
To eliminate such effects, it is necessary to pre-treat the gaskets at
high temperatures to remove any outgassed fumes before installing
into the fixture.
Bulb covered with a layer of white deposit
Example of Effect of Gasket Outgas
White deposit on the bulb can appear within 24 hours of
operation. Chemical analysis of the deposit has shown it to be
alumina material from other LEP™ components.
Suggested Fixes
Two approaches are recommended for preventing adverse
impact of outgassing the quartz bulb inside of an LEP™
luminaire:

Prevent exposure of gasket to light and heat from the
bulb.

Pre-treat the gasket per process outlined below:
Bulb should be transparent
Duration
(Hours)
4
Oven
Temperature
Air Circulation
Oven Ventilation
Batch Size
190° C
Air Circulation
inside oven is
recommended
Periodic or continuous ventilation of
oven is recommended to remove
any particulates during the baking
process
Allow small enough batch size so that the
individual gaskets reach the elevated
temperature and they do not over fume the
oven
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12. Design Checklist
HEATSINK THE DRIVER
HEAT TEST EMITTER AT
CORRECT LOCATION
INSTALL EMITTER
BELOW MAXIMUM
ANGLE ALLOWED
APPLY THERMAL PAD OR
THERMAL CREAM TO
BOTTOM OF DRIVER
DESIGN PROPER
EMI ENCLOSURE
USE CORRECT POWER
SUPPLY
HEAT TEST DRIVER AT
CORRECT LOCATION
ALLOW AIRFLOW
AROUND BULB & AVOID
KEEP-OUT ZONE
ROUTE RF CABLE AND AVOID
TOUCHING HOUSING
USE PROPER UV BARRIER
SEAL UNIT PROPERLY FOR DUST OR WEOTHER AS REQUIRED
- 16-
13. Safety Guidelines
1.
Never touch the bulb.
2.
Intense light beam - do not place hand/body part in a focused light beam as this may
cause burning.
3.
Do not look directly at the light source during operation.
4.
Operating the lamp without RF Driver lid can result in higher levels of EMI radiation.
5.
It is advised to ground the lamp body to the light box.
6.
Maximum voltage on PCB during normal operation is less than 30v DC.
7.
Over-voltage protection is not implemented in the light source.
8.
Protection for wrong polarity of input power is not implemented in the light source.
Polarized connector is used to prevent wrong polarity.
9.
Reversing polarity from miss-wiring may cause damage to the lamp.
10. Gasses in the quartz bulb are at high pressure during operation. Quartz bulb failures are
very rare and not expected but may be possible.
11. When lamp is off, there is no positive pressure and therefore is safe to handle.
12. CAUTIUON: UV emitted from lamp . Possible skin or eye irritation can result from
exposures exceeding 15 minutes in a day (ANSI/IESNA RG-2). UV shielding must be part of
- 17-
14. Contact and Ordering Information
Luxim Corporation
3542 Bassett Street
Santa Clara, California 95054
USA
Website: www.luxim.com
Email:
[email protected]
Online Resource Portal
Partner log-in request registration to access information:
Portal.luxim.com
Suggestions
We welcome suggestions on how to improve this design guide. Please send your suggestions to:
Info@luxim
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