Application Note –Remote Mounting Distances
Remote Mounting Distances
1.0
INTRODUCTION:
This Application Note is a guide for determining the maximum remote mounting distance allowed
®
between SYLVANIA LED modules and OPTOTRONIC LED power supplies. Following the
procedures and calculations outlined in this document will ensure that the LED system is installed
within its optimal operating conditions.
This document should never be considered a substitute for any provision of a state and/or local code
and/or regulation. The installer should take into account any restrictions and requirements imposed
by the authorities having jurisdiction before installation.
1.1 Related Documents:
•
•
•
®
OPTOTRONIC 24V DC LED Power Supply Product Information Bulletin (ECS050)
®
OPTOTRONIC 10.5V & 12V DC LED Power Supply Product information Bulletin
(ECS049)
®
OPTOTRONIC Constant Current LED Power Supply Product information Bulletin
(ECS052)
Note: Both EMI and voltage drop limitations have to be considered when estimating the
®
maximum allowed remote mounting distance of the OPTOTRONIC power supply. Neither
limitation excludes the other.
®
Note: The provisions of this document are limited to the use of OPTOTRONIC power
®
supplies with SYLVANIA LED modules and any OPTOTRONIC control interfaces, excluding
Traxon systems. For information on remote wiring distances for Traxon products please refer
to the specific Traxon product installation guide.
2.0 ELECTRO-MAGNETIC INTERFERENCE (EMI) LIMITATION:
®
All OPTOTRONIC products are designed to comply with the FCC 47 CFR Part 15 standard for radio
and electro-magnetic interference (EMI).
The maximum remote mounting distances in compliance with the FCC Title 47 CFR Part 15
®
limitations are listed in Table 1. These distances include any OPTOTRONIC dimming or colormix
control interfaces that may be installed in between, regardless of their position in the run.
LED126
Application Note –Remote Mounting Distances
24V Constant Voltage
MAX distance
Power Supply
51503
OT6W/24V/120V
51622
OT17W/24V/UNV
51512
OT20W/24V/120-240V/SQ
51598
OT50W/24V/120V/LP
51514
OT75W/24V/UNV
51510
OT96W/24V/UNV
51626
OT96W/24V/UNV/JBX
51627
OT240W/3X24V/120-240V/JBX
10V/12V Constant Voltage
32 ft
*
*
*
*
*
*
*
*
MAX distance
Power Supply
10 ft
12 ft
32 ft
10V
51502
OT6W/10V/120V
51599
OT20W/10V/120-240V
51509
12V
OT50W/10V/UNV
51601
OT10W/12V/120-240V
51602
OT25W/12V/UNV
51603
OT60W/12V/UNV
*
*
*
*
*
*
TABLE 1 Remote Wiring Limitation for Constant Voltage Power Supplies Due to EMI
Although it is possible to exceed the EMI limited remote mounting distance, it is the responsibility of
the installer and/or end user to take precautions to prevent and/or test the effects of EMI on the
installation. Additional EMC/EMI filters may be required on the output side of the power supply for
compliance of installations above the limits given in Table 1.
®
All OPTOTRONIC Constant Current power supplies are limited to 32ft maximum remote
mounting distance for EMI compliance (except NAED 51524 OT3/120-240/350 – 50ft).
3.0 VOLTAGE DROP LIMITATION
In conjunction with the limitations and requirements for electro-magnetic interference (EMI)
the voltage drop across the secondary wires/cables connecting the LED module to the
power supply should also be considered when determining the maximum remote wiring
distance for an installation. The voltage drop across the secondary wires leads to a
reduction in voltage at the LED module. Operation of LED modules at voltages below that
module's minimum specified voltage may cause the module to operate improperly and/or
lead to permanent damage.
3.1 Constant Voltage Power Supplies:
The maximum remote mounting distance allowed for an LED installation using an
®
OPTOTRONIC constant voltage power supply is based mainly on the wire gauge used and
the power consumption of the installation. Distance is calculated using the following formula:
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Application Note –Remote Mounting Distances
ρ - Resistance per foot of the wires used to connect the LED module to the power
supply. See table 2.
®
VOT – Voltage output of the OPOTOTRONIC power supply used (10.5V, 12V or 24V).
VLED – Minimum voltage required for the LED module(s). See Minimum and Maximum
Ratings in the respected LED module product information bulletin.
®
VDIM – Voltage drop of an OPTOTRONIC control interface if used. A typical value for OT
DIM is VDIM =~0.3V Do not include if a control interface is not part of the installation.
PLED – Total maximum power of the LEDs connected to the particular power supply.
Table 2 lists the most typical resistance per foot values for possible wire gauges. Use
these values for the maximum remote distance calculation unless they differ significantly
from the resistance per foot values of the particular wires used in the installation.
Wire Gauge
14 AWG
16AWG
18AWG
20AWG
22AWG
24AWG
ρ - Resistance per Foot [Ω/ft]
0.0025
0.0040
0.0064
0.0101
0.0161
0.0256
TABLE 2 Typical Resistance per Foot of Standard Copper Wire Gauges
3.2 Constant Current Power Supplies:
The maximum remote mounting distance allowed for an LED installation using SYLVANIA
®
constant current LED modules and an OPTOTRONIC constant current power supply is
entirely restricted to EMI limited remote mounting distance.
®
OPTOTRONIC constant current power supplies should not be mounted beyond the
limitations given in Section 2.0 of this document.
4.0 CONSTANT VOLTAGE MAXIMUM REMOTE MOUNTING DISTANCES
The following tables provide the typical maximum remote mounting distances for LED installations
®
®
using OPTOTRONIC constant voltage power supplies (Note: OPTOTRONIC control interfaces are
not factored in these values).
Please ensure that the wires used in the installation have the appropriate current carrying capacity.
Always double check the values by following the calculation method outlined in section 3.1. Use the
specified minimum voltage of the LED module used.
Note: Voltage drop limitations do not overrule EMI distance limitations given in Table 1.
Installer/end-user should take both values into account when performing the installation.
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Application Note –Remote Mounting Distances
24V Constant Voltage Installations
16 AWG
18 AWG
LED Load AWG Wire
Wattage
Guage
20 AWG
22 AWG
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet)
20
16
144
20
18
90
20
20
57
20
22
36
25
16
115
25
18
72
25
20
46
25
22
29
30
16
96
30
18
60
30
20
38
30
22
24
35
16
82
35
18
51
35
20
33
35
22
20
40
16
72
40
18
45
40
20
28
40
22
18
45
16
64
45
18
40
45
20
25
45
22
16
50
16
58
50
18
36
50
20
23
50
22
14
55
16
52
55
18
33
55
20
21
55
22
13
60
16
48
60
18
30
60
20
19
60
22
12
65
16
44
65
18
28
65
20
18
65
22
11
70
16
41
70
18
26
70
20
16
70
22
10
75
16
38
75
18
24
75
20
15
75
22
10
80
16
36
80
18
22
80
20
14
80
22
N/A
85
16
34
85
18
21
85
20
N/A
85
22
N/A
90
16
32
90
18
20
90
20
N/A
90
22
N/A
95
16
30
95
18
19
95
20
N/A
95
22
N/A
100
16
29
100
18
18
100
20
N/A
100
22
N/A
12V Constant Voltage Installations
16 AWG
18 AWG
LED Load AWG Wire
Wattage
Guage
20 AWG
22 AWG
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet)
20
16
69
20
18
43
20
20
12
20
22
8
25
16
55
25
18
34
25
20
10
25
22
6
30
16
46
30
18
29
30
20
8
30
22
5
35
16
39
35
18
25
35
20
7
35
22
4
40
16
34
40
18
21
40
20
6
40
22
4
45
16
31
45
18
19
45
20
6
45
22
3
50
16
28
50
18
17
50
20
5
50
22
3
55
16
25
55
18
16
55
20
5
55
22
3
60
16
23
60
18
14
60
20
4
60
22
3
10.5V Constant Voltage Installations
16 AWG
18 AWG
LED Load AWG Wire
Wattage
Guage
20 AWG
22 AWG
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
LED Load AWG Wire
Total Wire
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet) Wattage
Guage
Distance (feet)
20
16
31
20
18
20
20
20
12
20
22
8
25
16
25
25
18
16
25
20
10
25
22
6
30
16
21
30
18
13
30
20
8
30
22
5
35
16
18
35
18
11
35
20
7
35
22
4
40
16
16
40
18
10
40
20
6
40
22
4
45
16
14
45
18
9
45
20
6
45
22
3
50
16
13
50
18
8
50
20
5
50
22
3
4
Should you have any questions regarding the information contained in this document, please contact
SYLVANIA customer service (1-800-LIGHTBULB) or your local representative.
OSRAM SYLVANIA National Customer
Service and Sales Center
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Westfield, IN 46074
Industrial & Commercial
Phone: 1-800-255-5042
Fax: 1-800-255-5043
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Fa x: 1-800-562-4674
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Fax: 1-800-762-7192
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Phone: 1-888-677-2627
Fax: 1-800-762-7192
In Canada
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Headquarters
2001 Drew Road
Mississauga, ON L5S 1S4
Industrial & Commercial
Phone: 1-800-263-2852
Fax: 1-800-667-6772
Special Markets
Phone: 1-800-265-2852
Fax: 1-800-667-6772
Visit our website: www.sylvania.com
Specifications are subject to change without notice.
SYLVANIA is a registered trademark of OSRAM SYLVANIA Inc.
OPTOTRONIC is a registered trademark of OSRAM GmbH.
© 2010 OSRAM SYLVANIA Inc.
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