OCEM LIMS Instruction manual

Document UT-MT-0872-EN Page 1 of 37
Via della Solidariet , 2/1
40056 Valsamoggia Loc. Crespellano
BOLOGNA ITALY
Edition 08/04/2020 Supersedes edition 27/08/2019
Via della Solidariet 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
LIMS
INSTRUCTION MANUAL FOR USE, INSTALLATION
AND MAINTENANCE
Compiled by: P. Corinto Approved by: M. Mazzotti
V. Rossi

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INDEX
INDEX ................................................................................................................................................. 2
INDEX OF FIGURES ............................................................................................................................. 3
INDEX OF TABLES ............................................................................................................................... 3
1 GENERAL ......................................................................................................................... 5
2 CLASSIFICATION OF SIGNS ............................................................................................... 5
2.1 Type ................................................................................................................................ 5
2.2 Legend Sizes ................................................................................................................... 5
3 MAIN FEATURES ............................................................................................................. 6
3.1 Signs Description ............................................................................................................ 6
3.1.1 Frame .................................................................................................................... 6
3.1.2 Supports ................................................................................................................ 7
3.1.3 Panels .................................................................................................................... 7
3.1.4 LEDs Luminous Source .......................................................................................... 8
3.1.5 Electrical circuit ..................................................................................................... 8
3.1.6 Protection earthing ............................................................................................. 10
3.1.7 Models ................................................................................................................ 10
3.1.8 Monitoring Option .............................................................................................. 11
3.2 Part Number Identification .......................................................................................... 12
3.3 Environmental data ...................................................................................................... 12
3.4 Electrical Data ............................................................................................................... 13
3.5 Luminance Data ............................................................................................................ 14
4 INSTALLATION .............................................................................................................. 15
4.1 Option 70 Bird Spikes ................................................................................................... 18
5 MAINTENANCE ............................................................................................................. 19
5.1 Periodical Checks .......................................................................................................... 19
5.2 LEDs Luminous Source Replacement ........................................................................... 19
5.3 Electronic Card Replacement ....................................................................................... 23
5.3.1 Series Circuit Signs .............................................................................................. 23
5.3.2 Parallel Circuit Signs ............................................................................................ 25
5.4 Front Panel Replacement ............................................................................................. 28
5.5 Electronic Equipment Replacement ............................................................................. 31
5.6 Troubleshooting ........................................................................................................... 32
5.6.1 Series Signs .......................................................................................................... 32
5.6.2 Parallel Signs ....................................................................................................... 32
6 DRAWINGS ................................................................................................................... 33
6.1 Wiring diagram series signs .......................................................................................... 33
6.2 Wiring diagram parallel signs ....................................................................................... 35
7 LIST OF RECOMMENDED SPARE PARTS .......................................................................... 36
8 ACCESSORIES ................................................................................................................ 37

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INDEX OF FIGURES
Figure 1: Exploded view .................................................................................................................... 6
Figure 2: Frame.................................................................................................................................. 6
Figure 3: Support ............................................................................................................................... 7
Figure 4: Panels ................................................................................................................................. 7
Figure 5: LEDs luminous source......................................................................................................... 8
Figure 6: Electronic board ................................................................................................................. 8
Figure 7: Overall dimensions ........................................................................................................... 10
Figure 8: Electromechanical relay ................................................................................................... 11
Figure 10: Side by side installation (up), front back installation (down) ........................................ 16
Figure 11: Foundation ..................................................................................................................... 17
Figure 12: Wiring diagram (series sign without circuit stabilizer)................................................... 33
Figure 13: Wiring diagram (series sign with circuit stabilizer) ........................................................ 34
Figure 14: Wiring diagram (parallel signs powered at 110-230 VAC) ............................................. 35
INDEX OF TABLES
Table 1: Types of signs....................................................................................................................... 5
Table 2: Legend Sizes ......................................................................................................................... 5
Table 3: Signs dimensions ............................................................................................................... 10
Table 4: Sign-strip length combination ........................................................................................... 11
Table 5: Environmental Data ........................................................................................................... 12
Table 6: Power consumption at maximum luminance for series and parallel powered signs. ...... 13
Table 7: Isolating Transformer Size [Watt] without Circuit Stabilizer............................................. 13
Table 8: Isolating Transformer Size [Watt] with Circuit Stabilizer .................................................. 14
Table 9: Typical Photometric Performance ..................................................................................... 14
Table 10: Foundation sizes .............................................................................................................. 17
EDITIONS
er. Date Description Authors Reviewers Approver
1.0 20/01/2017 FIRST ISSUE P. CORINTO E. RAULI M. MAZZOTTI
2.0 30/04/2018 GENERAL UPDATES P. CORINTO/V. ROSSI E. RAULI M. MAZZOTTI
3.0 27/09/2018 UPDATE SPARE PARTS M.BACCIGLIERI E. RAULI M.MAZZOTTI
4.0 10/01/2019 GENERAL UPDATES M.BACCIGLIERI P. CORINTO M.MAZZOTTI
5.0 27/08/2019 GENERAL UPDATES P. CORINTO M.BACCIGLIERI M.MAZZOTTI
6.0 08/04/2020 UPDATE SIGN D2 SECTION
AND GENERAL UPDATES
K.VELIU/P. CORINTO M.BACCIGLIERI M.MAZZOTTI

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LIST OF ATTACHMENT
Reference n° Document Code Description
ABBRE IATIONS AND TERMS
Term or abbreviation Description
LED Light Emitting Diode
ICAO International Civil Aviation Organization
EASA European Aviation Safety Agency
CCR Constant Current Regulator
FAA Federal Aviation Administration

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1GENERAL
The internally LEDs illuminated LIMS 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.
LIMS are single face signs in compliance with ICAO - Annex 14 Vol.1, EASA CS-ADR-DSN Chapter N
and NATO-STANAG 3316. White on Red, Yellow on Black and Black on Yellow colour combination
may be ordered with any desired message.
The signs described in this manual are manufactured to be used on airport series circuits, through
isolating transformers, powered by 5-step (2.8 A - 6.6 A), 3-step (4.8 A - 6.6 A), and 1-step (6.6 A)
Constant Current Regulators.
The signs can be powered also by a parallel circuit voltage range 110-240 VAC, 50/60 Hz .
Consult ICAO Specs - Annex 14 and ICAO Aerodrome Design Manual - Part 4 for sign features and
use.
2CLASSIFICATION OF SIGNS
2.1 Type
Mandatory signs White legend on Red background
Location signs Yellow legend on Black background
Information (direction, destination,
boundary) 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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3MAIN FEATURES
3.1 Signs Description
The signs practically include the following sections (Figure 1):
A. Frame
B. Supports
C. Panels
D. LEDs luminous source
E.Electronic board
3.1.1 Frame
The frame principally consists of a bearing
bottom structure, two sides and one top
cover (Figure 2).
Bottom structure, sides and top cover are
made of extruded aluminium profiles,
realized according to our design.
The signs are equipped with a single top
cover, locked to the main structure by means
of four hexagonal knob. The main structure is
white outside painted (other colours are
available on request).
Figure 1: Exploded view
Figure 2: Frame

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3.1.2 Supports
Each support includes a pole,
a BREAKABLE COUPLING KIT
and a floor flange (Figure 3).
All components are made of
aluminium. The supports are
fixed to the structure with
“C” clamps.
3.1.3 Panels
The panels enclosed in the frame are (Figure 4):
•Text panel
•Light-guide panel
•Back panel
The text panel is made of
polycarbonate 4 mm thick.
The light-guide panel is made of
methacrylate, while the back
panel is made of a composite
material.
The legend is obtained by
means of adhesive coloured
translucent films applied to the
internal side of the text panel.
Figure 3: Support
Figure : Panels

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3.1.4 LEDs Luminous Source
The signs are illuminated by strips LEDs
(Figure 5) inserted in suitable supports.
High efficiency white LEDs are used, with
an average life of 60.000 hours.
The positioning of the LEDs has been
determined through photometric tests in
order to meet the luminance values as
required by ICAO Specs - Annex 14.
Three different strips lengths are used
(720, 960 and 1200 mm) for the different
signs lengths (see Table 4).
3.1.5 Electrical circuit
Constant Current supply (AGL Series Circuit)
Signs for constant current series circuits are equipped with an
electronic current converter housed inside a water proof
aluminium box, mounted on a side of the external frame.
About the luminance levels, two versions are available:
-1 luminance level over the whole input current range 2.8
A ÷ 6.6 A;
-2 luminance levels depending on the input current
value: in the standard version the current threshold at
which the luminance level changes is 5.9 A (but
optionally this threshold is customizable).
An option in available to monitor the light sources status,
compliant with the fail open operation (see 3.1.8).
Further, to facilitate the feeding of the sign with different
topologies of CCR, an optional stabilization circuit is available,
composed by an inductor and a capacitor (see Figure 12Figure
12: Wiring diagram (series sign with circuit stabilizer).
For the electrical connection to the isolating transformer the sign is equipped with a two-pole
cable lead with L-823 plug, style 1, protected by a corrugated pipe.
The sign is also equipped by an external disconnecting switch (main switch), which allows to light
off the sign and at the same time short circuit the isolating transformer. The main switch permits
to light off the sign without disconnecting it from the series circuit.
Figure 5: LEDs luminous source
Figure 6: Electronic board

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The main switch MUST BE OPERATED ONLY WITH THE CCR OFF.
In general the CCR must be turned off before any intervention on the sign.
See Figure 11 and Figure 12 for the two types of wiring diagram of the signs (without and with
stabilization circuit).
Parallel circuit voltage supply (110 -240 VAC, 50/60 Hz) (OPTION)
An option is available that permits to fed the sign through a parallel circuit voltage supply 110-
240VAC, 50/60 Hz.
In this case the luminance level is constant and the monitoring of the sign status is not available.
For the electrical connection to the AGL circuit, the sign is equipped with a three-pole cable lead
with L-823 plug, class B.
CAUTION: The three-pole plug are interconnectable with receptacle connector, take necessary
measures to avoid dangerous connection.
Wiring: Please refer to the table below and see Figure 13 for correct wiring of the sign powered at
230VAC.
（a）Connect the PE wire (green/yellow) of the sign to PE (green or green/yellow) of the power
supply network.
（b）Connect the L wire (brown) of the sign to Live (black, brown or red) of the power supply
network.
（c）Connect the N wire (blue) of the sign to Neutral (white or blue) of the circuit supply.
The sign is also equipped by an external disconnecting switch (main switch), which allows to light
off the sign.
Wire Name Europe USA
L LIVE/HOT Brown Black or Red
N NEUTRAL Blue White
PE PROTECTIVE
EARTH/GROUND
Green/Yellow
striped
Green or
Green/Yellow
striped

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3.1.6 Protection earthing
On the aluminium box containing the electronics, an earthing stud is available (see Figure 6).
FOR SAFETY PURPOSES, A CABLE OF 4 MM2 MINIMUM SECTION, CONNECTED TO
THE EARTHING SYSTEM OF THE AGL CIRCUIT MUST BE CONNECTED TO THE
EARTHING STUD OF THE SIGN.
3.1.7 Models
The main sign dimensions are depicted in Figure 7. The possible values for the lengths A, A’, B, C,
D and H are indicated in Table 3.
Figure 7: Overall dimensions
Length A
[mm]
isible
length
A’ [mm]
H=300mm B=704mm C=900mm H=400mm B=904mm C=1100mm
Wind @ 322 km/h Wind @ 480 km/h Wind @ 322 km/h Wind @ 480 km/h
Supports
quantity
Distance
D [mm]
Supports
quantity
Distance
D [mm]
Supports
quantity
Distance
D [mm]
Supports
quantity
Distance
D [mm]
1094 990 2 580 2 580 2 580 2 580
1354 1250 2 840 2 840 2 840 3 420
1574 1470 2 1060 2 1060 2 1060 3 530
2054 1950 3 770 3 770 3 770 4 513
2294 2190 4 593 4 593 4 593 4 593
2534 2430 4 673 4 673 4 673 6 404
2994 2890 4 827 4 827 4 827 6 496
Table 3: Signs dimensions