OCEM LIGS01 Instruction manual

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Via della Solidarietà, 2 1
40056 Valsamoggia Loc. Crespellano
BOLOGNA ITALY
Edition 16 03 2020 Supersedes edition 12 02 2019
Via della Solidarietà 2 1 – 40056 Valsamoggia - Italy
THIS COPY IS NOT SIGNED SINCE IT IS FILED AND DELIVERED BY MEANS OF THE AUTOMATIC KNOWLEDGE MANAGEMENT SYSTEM (IT CAN BE SIGNED ON REQUEST). THIS DOCUMENT AND THE DATA CONTAINED HERE IN, IS
PROPRIETARY PROPERTY AND SHALL NOT BE DUPLICATED, USED OR DISCLOSED – IN WHOLE OR IN PART – FOR ANY PURPOSE WITHOUT WRITTEN CONSENT OF OCEM.
LED LUMINOUS GUIDANCE SIGN
LIGS01
INSTRUCTION MANUAL FOR USE, INSTALLATION
AND MAINTENANCE
Compiled by: M.Romagnoli Approved by: M.Mazzotti
N° Attachments: 1 Copy n°:

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LED LUMINOUS GUIDANCE SIGN LIGS01
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
EDITIONS
Date
16 03 2020 Added derivation option, general update, removed attachment 1
12 02 2019 Added two size tables transformers case SCR and Sinusoidal
26 07 2016 Correct the document code
20 05 2016 Added option 10
23 11 2015 Added attachment 1 for special version
17 07 2013 Updated power consumption and Chapter 6 “List of the recommended Spare
Parts”
30 04 2012 General revision and updated Chapters 6 “List of recommended Spare Parts”
and 7 “Options”
21 09 2010 First Issue
REVISIONS
Index Date Description Edited b Approved b
LIST OF EFFECTIVE PAGES
From page 1 to page 27

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LED LUMINOUS GUIDANCE SIGN LIGS01
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
INDEX
EDITIONS ........................................................................................................................................... 2
REVISIONS .......................................................................................................................................... 2
LIST OF EFFECTIVE PAGES .................................................................................................................. 2
INDEX ................................................................................................................................................. 3
INDEX OF FIGURES ............................................................................................................................. 4
INDEX OF TABLES ............................................................................................................................... 4
LIST OF ATTACHMENTS ..................................................................................................................... 4
1 GENERAL ......................................................................................................................... 5
2 CLASSIFICATION OF SIGNS ............................................................................................... 5
2.1 Type ................................................................................................................................ 5
2.2 Legend Sizes ................................................................................................................... 5
2.3 Part Number Identification ............................................................................................ 6
3 MAIN FEATURES ............................................................................................................. 6
3.1 Environmental Data ....................................................................................................... 6
3.2 Electrical Data ................................................................................................................. 7
3.2.1 Current Power Supply ........................................................................................... 7
3.2.2 Voltage power Supply ........................................................................................... 8
3.3 Luminance Data .............................................................................................................. 9
3.4 Description of the Signs.................................................................................................. 9
3.4.1 Main Structure ...................................................................................................... 9
3.4.2 Panels for Faces .................................................................................................. 10
3.4.3 LEDs Luminous Source ........................................................................................ 10
3.4.4 Electronic Boards ................................................................................................ 11
3.4.4.1 Current power Supply .......................................................................... 11
3.4.4.2 Voltage Power Supply .......................................................................... 11
3.4.5 External power switch ........................................................................................ 11
4 INSTALLATION .............................................................................................................. 12
5 MAINTENANCE ............................................................................................................. 15
5.1 Periodical Checks .......................................................................................................... 15
5.2 LEDs Luminous Source Replacement ........................................................................... 15
5.3 Electronic Equipment Replacement ............................................................................. 16
5.4 Troubleshooting ........................................................................................................... 16
6 LIST OF RECOMMENDED SPARE PARTS .......................................................................... 26
7 ACCESSORIES ................................................................................................................ 27

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
INDEX OF FIGURES
Figure 1 - Overall Dimensions ......................................................................................................... 10
Figure 2 - Flange Installation with Anchor Bolts ............................................................................. 13
Figure 3 - Concrete Foundation....................................................................................................... 14
Figure 4 - 1 MODULE Signs - Wiring Diagram.................................................................................. 17
Figure 5 - 2 MODULES Signs - Wiring Diagram ................................................................................ 18
Figure 6 - 3 MODULES Signs - Wiring Diagram ................................................................................ 19
Figure 7 - 4 MODULES Signs - Wiring Diagram ............................................................................... 20
Figure 8 - 1 MODULE 230V 37V Sign Single Faced – Wiring Diagram ............................................ 21
Figure 9 - 2 MODULES 230V 37V Sign Single Faced – Wiring Diagram .......................................... 22
Figure 10 - 3 MODULES 230V 37V Sign Single Faced – Wiring Diagram ........................................ 23
Figure 11 - 4 MODULES 230V 37V Sign Single Faced – Wiring Diagram ........................................ 24
Figure 12 - 4 MODULES Signs with OPTION 18 Single Faced - Wiring Diagram .............................. 25
INDEX OF TABLES
Table 1 –Rating of the transformers 230V 37V-50Hz ....................................................................... 5
Table 2 - Power absorbed by the signs (37V input) .......................................................................... 5
Table 3 - Input current to the signs (37V) and relative transformer (230V)………… …… ……………… 6
Table 4 - Series Insulating Tranformer size ....................................................................................... 7
Table 5 - CCR Total Load .................................................................................................................... 7
Table 6 – Powers of the transformers 230V 37V-50Hz .................................................................... 8
Table 7 – Powers absorbed by the signs (37V input) ....................................................................... 8
Table 8 – Input currents to the tables (37V) and input to the transformers (230V) ....................... 8
Table 9 - Luminance Data in cd m
2
6.6 A A ...................................................................................... 9
Table 10 - Troubleshooting ............................................................................................................. 16
LIST OF ATTACHMENTS

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LED LUMINOUS GUIDANCE SIGN LIGS01
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
1GENERAL
The internally LEDs illuminated LIGS01 signs are designed to be used on airport taxiways and
runways to convey a mandatory instruction, information on a specific location or destination on a
movement area or to provide other information to meet the requirements of Surface Movement
Guidance.
White on Red, Yellow on Black and Black on Yellow colour combination may be ordered with any
desired message.
Signs are available as single or double faced.
The LED light signs LIGS01 can be powered in two ways:
-Current power supply:
The signs must be powered by series circuits through isolation transformers, connected to
constant current regulating units (CCR) variable from 2.8 A to 6.6 A (5-step CCR) or from
4.8 A to 6.6 A (3-step CCR) or fixed at 6.6 A (1-step CCR).
The power to be used for sizing the isolation transformer and the CCR depends on the
length of the sign and are shown in chapter 3.2.1
-Voltage Power supply:
The sings must be powered from the 230V 50Hz by placing a 230V-37V 50Hz
transformer.
NOTE: THE TRANSFORMER IS NOT PART OF THE SIGN AND IS NOT PROVIDED BY OCEM
Airfield Technolog
The minimum recommended power for the transformer depends on the length of the sign
and is shown in chapter 3.2.2
LIGS signs are in compliance with ICAO - Annex 14 Vol.1, EASA CS-ADR-DSN Chapter N and NATO-
STANAG 3316.
Consult ICAO Specs - Annex 14 and ICAO Aerodrome Design Manual - Part 4 for sign features and
use.
2CLASSIFICATION OF SIGNS
2.1 T pe
Mandator signs White legend on Red background
Location signs Yellow legend on Black background
Information (direction, destination,
boundar ) sign Black legend on Yellow background
Table 1 – Types of signs
A sign may consist of multiple arrays of the above messages.
2.2 Legend Sizes
Height of large legend 400 mm
Height of mid legend 300 mm
Table 2 - Legend Sizes

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
2.3 Part Number Identification
LIGS 01 – 32 – 1 – XX
Basic Part Number:
Version:
Size:
3 = Sign, 300 mm Legend Height
4 = Sign, 400 mm Legend Height
Number of Faces:
1 = Single Face
2 = Double Face
Number of Modules*: 1 to 4
Options:
01 = Tether
10 = Monitoring
18 = Double power supply for 3 and 4 module signs
48 = Reinforced version FAA-mode 3 (483 km h)
55 = Protection degree IP55
69 = Orange rear side for single face signs (ENAC only)
70 = Bird Spikes
71 = ON-OFF Key switch
D2 = Supply voltage (an external 230 37 Vac transformer is required).
* One module corresponds to 1 meter. 4 modul signs are not confoming to the reccomandations
of ICAO Aerodrome Design Manual - Part 6 (maximun length of the signs 3m).
3MAIN FEATURES
3.1 Environmental Data
Temperature -40°C to +55°C
Weather All outdoor conditions, exposure to: driving rains, snow and icing, salt-
laden atmospheres, relative humidity from 5 % to 95 %.
Wind Speed 322 km h ICAO Aerodrome Design Manual Part 6 Frangibility
Radio Interference None
Table 3 - Environmental Data

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.2 Electrical Data
3.2.1 Current Power Suppl
The luminous signs are powered by series circuits through isolating transformers, meeting FAA
Specs FAA L830-L831, in the following ratings (see table 4)
SIZE TRANSFORMERS case SCR
TRANSFORMER RATING [W] to the
currents of:
Sign modules
1 2 3 4
6,6A 65 150 200 300
4,8 - 6,6A 100 150 300 300
2,8A - 6,6A STANDARD 150 300 400 500
Opt.18 // // // 2x300
SIZE TRANSFORMERS case Sinusoidal
TRANSFORMER RATING [W] to the
currents of:
Sign modules
1 2 3 4
6,6A
65 100 150 200
4,8 - 6,6A
65 150 200 300
2,8A - 6,6A
STANDARD
100 200 300 400
Opt.18
2x200
Table 4 – Series Insulating Tranformer size
The power required to CCR per each sings is:
Sign
Modules
CCR Total Load
2.8 A-6.6 A
5 STEP
4.8 A-6.6 A
3 STEP
6.6 A
1 STEP
1 92 VA 53 VA 39 VA
2 176 VA 103 VA 75 VA
3 260 VA 152 VA 110 VA
4 344 VA 201 VA 146 VA
Table 5 - CCR Total Load

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.2.2 Voltage power Suppl
The light signs are powered with voltage 230V 50Hz, through transformers 230V-37V 50Hz, of
the following minimum size (NOTE: THE TRANSFORMER IS NOT PART OF THE SIGN AND IS NOT
PROVIDED BY OCEM Airfield Technolog )
The minimum rating of the transformers 230V-37V 50Hz are:
SIGN MODULES 1 2 3 4
TRANSFORMER
RATING [VA] 60 110 160 220
Table 1 – Rating of the transformers 230V/37V-50Hz
The Power absorbed by each sign is (input 37V):
SIGN MODULES 1 2 3 4
ABSORBED POWER
[W] 29 57 85 113
Table 2 – Power absorbed by the signs (37V input)
The maximum input current to the signs (input 37V) and to the relative transformer (input 230V)
are:
SIGN MODULES 1 2 3 4
MAXIMUM CURRENT
Input signs [Arms] 1.6 4.1 4.7 6.2
MAXIMUM CURRENT
Input transofrmer [Arms] 0.4 0.7 1.0 1.4
Table 3 – Input current to the signs (37V) and relative transformer (230V)

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.3 Luminance Data
The luminance of the sign faces is practically constant for any value of the series circuit current
from 2.8 A through 6.6 A and the relevant values are shown in the
LEGEND SIZE HEIGHT OF SIGN
FACES
COLOURS
RED YELLOW WHITE
400 mm 800 mm 50 190 350
300 mm 600 mm 55 210 390
Table 4 - Luminance Data in cd/m
2
6 6 A
NOTE: the electrical and luminous data are referred to constant current regulators and
isolating transformers manufactured and/or distributed b OCEM. The data ma change
with constant current regulators and/or transformers manufactured b other Companies.
3.4 Description of the Signs
The signs practically include the following sections (see Figure 1)
a) main structure
b) panels for faces
c) LEDs luminous source
d) electronic boards.
3.4.1 Main Structure
The main structure principally consists of a bearing bottom structure, two sides, one top cover and
assembling-supporting components.
Bottom structure, sides and top cover are made of extruded aluminium profiles, realized according
to our design.
The signs may be considered as divided in modules, each approx 1000 mm long.
Quantity and types of assembling-supporting components depend on the number of sign modules.
Each module is supported by two mountings, each including a leg, a breakable coupling and a floor
flange. All these components are cast aluminium.
The signs are equipped with a single top cover, locked to the main structure by means of four
hexagonal knob. The main structure is matt black outside painted.

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.4.2 Panels for Faces
The panels for faces are made of high performance methacrylate 5 mm thick.
The legend is obtained by means of adhesive coloured translucent films applied to the internal
side of the panel.
Number of
Modules
1 2 3 4
A 991 1976 2961 3946
Legend
Height
300 400
B 838 1038
Figure 1 - Overall Dimensions
3.4.3 LEDs Luminous Source
Each sign module is illuminated by two luminous sources.
LEDs are high efficiency type, white colour with average life 60.000 hours.
The positioning of the LEDs has been determined through photometric tests so to meet the
illumination values as required by ICAO Specs - Annex 14.
LEDs provide constant level illuminance.

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
3.4.4 Electronic Boards
3.4.4.1 Current power Suppl
In case of current supply, the sign is equipped with a current converter completely assembled on
an encapsulated electronic board.
By varying the current of the CCR in the range 2.8 - 6.6 A, the current converter provides a constant
current to each luminous source. This allows a constant luminance regardless the step of the CCR.
For the electrical connection to the isolating transformer the sign is equipped with a two-pole
cable lead with L-823 plug, 1650 mm long.
A flexible plastic pipe of suitable length is provided for cable protection; the pipe has to be fitted
inside a coupling (included in the supply) with G 2” threaded lower section.
3.4.4.2 Voltage Power Suppl
In case of voltage supply, the sign is equipped with an AC voltage DC current converter, consisting
of an electronic board housed in an aluminum "tank" entirely filled with resin for the protection of
humidity.
The converter always supplies a constant current to each light source. This allows for constant
illumination.
For the electrical connection to the isolating transformer the sign is equipped with a two-pole
cable lead with L-823 plug, 1650 mm long.
A flexible plastic pipe of suitable length is provided for cable protection; the pipe has to be fitted
inside a coupling (included in the supply) with G 2” threaded lower section.
3.4.5 External power switch
An external power disconnecting ON-OFF switch is provided to break all electrical connections to
the sign for safe maintenance.
See from Figure 4 to Figure 11 for the wiring diagram of each type of sign.
4INSTALLATION
a) Take as reference Figure 1 for spacing between breakable couplings.

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b) Remove the sign from the relevant packing.
c) The signs are normally installed so that the cable entry is located toward the runway or taxiway
edge. As general rule when facing side B the cable entry is placed on the left side.
d) The concrete foundation for the sign should be flat and levelled. Refer to Figure 3 for relevant
data. The isolating transformer must be placed inside a concrete pit complete with pipe elbow
for the secondary cable passage or inside a steel base complete with upper plate with G 2”
threaded coupling for the plug-socket connection.
e) It is recommended that the anchor bolts, used for the flange anchoring, are mounted after the
completion of the concrete foundation. The anchor bolts have to be walled accurately as shown
in Figure 2 and in manner to assure the parallelism of the centreline marked on the flange and
the sign centreline.
f) Remove the frangible couplings floor flanges from the bottom of the sign by loosening the
locking screws (set screw M8x14).
g) Taking care of the levelling of the floor flanges is very important to ease the installation of the
sign. Place a long carpenter level across the top of the breakable couplings to verify their
alignment and levelling. Do not tighten the flanges anchor nuts, tight (only finger-tight) until
the sign installation is complete.
Lower the sign with the legs onto the frangible couplings and tight the locking screws. Check
the sign to be sure that it is levelled. Shim the floor flanges as required and put drying grout
under the flange if necessary.
NOTE: some vertical adjustment can be obtained by rotating the frangible couplings a turn or two
in the floor flanges.
h) Once the sign has been levelled, tighten the anchor nuts securely. (NOTE: anchor hardware is
not supplied with the sign). Anchor hardware should be corrosion resistant.

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
i) IMPORTANT
CONNECT THE GROUND CABLE of the airport circuit to the ground terminal of the sign located
on the bottom panel of the sign itself (6 mm2 recommended).
j) Pass the cable lead with plug through the coupling for flexible pipe and connect the cable lead
with plug of the sign to the socket of the isolating transformer (be sure that the cable lead with
plug be passed through the coupling for flexible pipe). The plug-socket connection should be
secured inside the pipe elbow by using the suitable pair of plastic rings or inside the baseplate
by using the relevant supporting ring. Screw the coupling to the pipe elbow or to the baseplate,
fit the flexible pipe inside it and provide sealing between pipe and coupling.
k) After the signs have been installed, turn the circuit on to the lowest step and check to see that
all the signs are lighted.
Figure 2 - Flange Installation with Anchor Bolts

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INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
Number of Modules
DIMENSION 1 2 3 4
A 991 1976 2961 3946
A’ 955 1940 2925 3910
T 3366 4351 5336 6321
Legend
Height
DIMENSION 300 400
B 838 1038
B’ 600 800
Figure 3 - Concrete Foundation

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5MAINTENANCE
ATTENTION!
Never operate on electrical and electronic equipment while the CCR is ON.
5.1 Periodical Checks
Dail Check for burned-out led
Monthl Check for dirty panels
Semi-Annual Check for loose wire connections
Check for cracked or deteriorated wires
5.2 LEDs Luminous Source Replacement
LEDs used in the sign have a long average life. When replacement becomes necessary, follow the
procedure below:
a) Be sure that the series circuit is de-activated (regulator unit CCR off or Main switch of the
230Vac line open according to the type of sign); in any case turn the main switch to OFF position
b) Loose the four screws of the cover and remove it
c) Disconnect the connectors of the damaged LEDs luminous source and loosen the four nuts at
the angles of the support, then slide and lift the support to extract it from its seat
d) Unscrew the six screws of the damaged LEDs luminous source, replace it and restore the initial
condition
e) Mount the top cover with reverse procedure
f) Turn the main switch to ON position, turn On the CCR or close the 230V main switch and check
the correct operation of the sign.

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5.3 Electronic Equipment Replacement
If troubles to the electrical electronic are suspected proceed as follows:
a) Be sure that the series circuit is de-activated (regulator unit CCR off or Main switch of the
230Vac line open according to the type of sign); in any case turn the main switch to OFF position
b) Remove the top cover by loosening the relevant four screws
c) Check the wiring, the connection to the terminal strips and the continuity
d) If necessary replace the power supply board
e) Mount the top cover with reverse procedure
f) Turn the main switch to ON position, turn On the CCR or close the 230V main switch and check
the correct operation of the sign.
5.4 Troubleshooting
Problem Problem cause Solution
The sign is totally or
partially not lighted
Defective LED(s) on luminous
source(s)
Replace the LED(s) luminous
source(s)
Defective isolating transformer Replace isolating transformer
Defective power supply board Replace power supply board
The main switch is left to OFF
position Turn the switch to ON position
Bad connection Check wiring
Table 5 – Troubleshooting

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Figure 4 -1 MODULE Signs- Wiring Diagram

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Figure 5 -2 MODULES Signs - Wiring Diagram

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Figure 6 – 3 MODULES Signs - Wiring Diagram

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Figure 7 - 4 MODULES Signs - Wiring Diagram