Witt Sensoric LIGI-10 FLEX Series User manual

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Original operating instructions
Safety light curtain LIGI-10 FLEX

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Sensoric GmbH Berlin © www.witt-sensoric.de 2
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Order code LIGI - safety light curtain
LIGI-10-FLEX-S-OSE-T00-A-a16/b10-352,5/217,5-F01-C03-S000
Description
Housing design
10
= standard profile 29x16
2-part flexible LIGI
Finish
S
= silver
Beam geometry
A
= continuous high detection capability
Active light beams
Active detection zone
F
= Function
01
= without Blanking
C
= Cable length/connector
03
= pig-tail connector with M8 plug, 6-pin
S
= Special version
000
= standard version
XXX = custom design without functional difference, for example: color, logo, etc.
Testing
T00
= pull-down resistor, only activates the alignment mode
T05
= open is normal operation, test=low or high
Output versions
OSE
= rectangular signal
R03
= SSR - light-on/dark-on switching

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Key to symbols
Safety instructions
Recommendation for optimal procedure.
Risk of death in the case of non-observance.
• The safety instructions in the operating manual must be observed.
• Installation and electrical connection may only be carried out by trained personnel.
• The safety light curtain complies with the requirements of Category 2 and PL=d
as per EN 13849-1 and must be integrated into the operating procedure in a fault-
free manner in accordance with the applicable regulations and standards in order
to achieve proper protective functioning.
• In accordance with EN 12978, the safety light curtain is suitable for all door types
apart from sluice and dock gates, lift doors, vehicle doors, gates used mainly in an-
imal husbandry, textile theatre curtains, railway level-crossing barriers, barriers that
are used solely for vehicle traffic, and dangerous machines that are not doors.
• During mounting, installation and commissioning, it must be ensured that the pho-
to switch system cannot be influenced by other photo switch systems or sources of
infrared light.
• The applicable standards and regulations – particularly EN 12453 (Safety in use of
power operated doors) – are to be observed during mounting, installation, commis-
sioning, maintenance and repair.
• Strictly observe the regulations of the EN12978 when connecting safety devices
on power operated doors.
• The manufacturer assumes no liability for damage caused by operation and con-
nection errors, non-observance of the operating manual or lack of maintenance or
care; the manufacturer wishes to draw attention again to the possible hazardous
situations that can arise in this way.
• Notwithstanding conformity with harmonised standards, it is not possible to
foresee every potential risk. For this reason, persons should only be present in the
hazardous area when necessary.

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Purpose
Mounting, installation and commissioning
The safety light curtain (LIGI) consists of a transmitter and receiver and is suitable for
all automatic door types with a minimum door width of 1.6m. The LIGI complies
with the following regulations: EN 12978, EN 12445 and EN 12453. The closing
speed of the door is to be selected in such a way that the force limit values as per EN
12453 are adhered to. Only objects that are 5mm larger than the beam separation
distance can be detected.
Mounting, installation and commissioning of safety light curtains may only be carried
out by trained personnel in accordance with the specifications of the door manufac-
turer. The specifications in this operating manual are also to be adhered to. Opera-
tion under conditions other than those intended and modifications to the optics and
casing are not permitted and result in loss of EC conformity.
When installing SSR (solid state relay) versions, it must be ensured that the door
control system checks the safety light curtain versions with a test input once per door
cycle. To do so, the control system must trigger the test input on the transmitter for
at least 100ms and monitor the reaction behaviour of the output of the receiver. If
the time behaviour corresponds to the technical data, the test is successful. Testing by
briefly switching off the supply voltage is not suitable.
The safety light curtains are designed in such a way that sunlight and light from
halogen lamps and fluorescent tubes (see IEC 61496-2) do not lead to undesired
activation.
In rare cases, other photo switches or sources of infrared light can lead to undesired
activation. These sources of light interference must be dealt with in such cases by
switching off, blocking or removing them.
If two light curtains (in front of and behind the door) are to be used to provide
protection, the separation distance between the light curtain and door should be
small enough that persons cannot be present undetected between the door and the
detection zones that are created. For this application, the two transmitter of the light
curtains should be mounted on opposite sides of the door.

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Mounting, installation and commissioning
When the light curtain is being mounted, it is to be placed on a stable subsurface.
Ensure that the ground is sufficiently level so that the sensor function can work at all
points.
Optical components (transmitters, receivers, LEDs) must not be covered.
A risk assessment in accordance with the machinery directive is the basis for deciding
on the selected safety method.
The alignment of the light curtain should be optimised after it has been mounted.
If the test input of the light curtain is activated for longer than 15s, the light curtain
switches into alignment mode. The signal reserve can be optimised in alignment
mode by alternately rotating the LIGI transmitter and LIGI receiver.
If the signal reserve is less than 2, the green receiver LED flashes in this mode. The
green LED remains on for signal reserves greater than 2 and the red receiver LED
flashes with increasing flash frequency when the signal reserve increases. The signal
reserve should be a factor of 2 or greater to ensure fault-free operation as well as to
tolerate a certain amount of dirt.
As soon as the test input is deactivated for a short period, the light curtain returns to
normal mode.
After installation and fine adjustment the light curtain should be switched off and
back on again before the performance test. The transmitter is than self adjusting the
optinum power.

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Electrical connection:
Operating mode
The connections are made depending on the version according to the supplied circuit
diagram.
Important note: The sync cable (white wire, or yellow wire for OSE) is an internal
connection between the transmitter and receiver which must not be connected in the
controller!
Alignment mode:
This mode allows for optimum alignment of the LIGI based on a variable flash frequency of
the LEDs on the receiver.
Error messages:
The LIGI has an internal error diagnosis function which indicates errors by means of an LED
code depending on the type of error. In the event of an error, the LIGI switches to safe mode
and the door can then only be operated in “dead man” mode.
Transmitter
power supply = OK
dark-on switching
power supply = OK
light-on switching
Test
(LEDs flashing alternately)
Receiver
Free detection zone
Interrupted detection zone
Test
(LEDs flashing alternately)
Legend
LED lit
LED flashing
LED off
green
yellow red
Transmitter
Receiver

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Alignment mode
Alignment mode is accessed by activating test or alignment mode for at least 15s and for the
duration of alignment.
For SSR (solid state relay) output versions, the test input must now be disconnected from the
fixed potential again and connected to the test input of the controller.
The test input (T00 version) is only required for alignment when using the OSE output ver-
sions. Connect to 0V/GND in normal operation.
Receiver
Excess gain less than 2 Green LED flashing
Excess gain greater
than 2
Flash frequency of red
LED increases with signal
reserve
Transmitter
Alignment mode
(LEDs flashing alternately)
Legend
LED lit
LED flashing
LED off
green
yellow red
Transmitter
Receiver

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Error mode
No supply voltage Check supply voltage
Receiver polarity
reversed
Yellow LED flashes 3x,
long pause
Check receiver
operating voltage
Short at output Red LED flashes 2x,
long pause
Check output cable,
overload, wrongly con-
nected, cable defective,
output on light curtain
defective
Error in sync cable Yellow LED flashes 3x,
long pause
Check sync cable
(white), may only be
connected between
transmitter and receiver
Internal device error All LEDs flashing Light curtain must be
replaced
Error mode
Legend
LED lit
LED flashing
LED off
green
yellow red
Transmitter
Transmitter
Receiver
Receiver

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Light control
Installation steps (critical doors and floors / without door function):
For increased functional security when installing in front of the door, the reception signals
(reference values) must be programmed into the light curtain when the door is open and the
area to be protected is clear.
• The LIGI is installed as explained in the operating instructions, i.e. the transmitter is
connected as indicated in the table above (bottom row).
• When the door is open and the area to be protected is clear, the sync connection
between the transmitter and receiver is connected/hot-wired with 10-30 V DC
using a short filament for a very short period of time (less than 1s). Everything
else will now happen automatically.
• If the previous step has been carried out correctly, the green LED on the receiver will
be continuously on and the red LED will flash. The reference values will then be pro-
grammed. It is essential to keep the area to be protected clear during this time. This
programming process will take 10s and the red LED will then go out.
Installation options Notes
Installation in front of door
noncritical standard doors
(without door function)
Door and floor have matt surfaces.
Installation in front of door
critical doors; critical floors
(without door function)
Critical points:
Part or all of the door has a highly reflective
surface.
Increased functional safety can be achieved by
programming the signals when the door is open
(see descriptions below).

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Installation and starting up with light control
Additional information:
• If something went wrong during the programming process explained above (e.g. accidental interruption
of light beam or if the adjustment was subsequently changed), the programming process can be
repeated as often as required.
• If the sync connection between the transmitter and receiver is connected with 10-30 V DC for
longer than 15s and less than 25s, all the saved reference values from the programming process
will be actively deleted, i.e. the factory settings are restored. Once the above connection has been
disconnected, the green and red LEDs on the receiver will illuminate for 2s; this confirms that the
reference values have been deleted. At this setting the light curtain is typically used for uncritical
ambient conditions.
Receiver
Area to be protected clear
Programming phase after connec-
tion for 1s
Programming phase complete
Receiver
Connect sync 15s to 25s with
10-30 V DC.
Connection to sync disconnected
again.
Legend
for 10s
for 2s
LED lit
LED flashing
LED off
green
yellow red
Transmitter Receiver

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The operation of the light curtain is to be tested as follows once it has been mounted.
1. A test rod with a diameter of 28mm must be continuously detected over a range
of 0mm to 500mm above the ground.
Top view:
Door and recommended light curtain layout of T=transmitter and R=receiver
R
T
T
R
Figure 1
Without door function
(Blanking function)
Testing

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Maintenance and repair
The safety light curtain does not have any wearing parts that need to be maintained.
The light entry and exit openings are to be cleaned regularly, depending on the dirt
that occurs. Use a cloth with soapy water or a water jet for this purpose. High-pres-
sure cleaners, abrasives and organic solvents must not be used.
Check regularly whether the light curtains are correctly aligned. Adjust the alignment
if necessary. The light curtain casing, the optics areas, the plug and the connection
cable are to be checked regularly for damage. Parts with significant damage must be
replaced.
Furthermore please check detection ability on a regular basis as per manual page 11.
If light curtains are replaced, they must only be replaced by identical light curtains
or by other safety light curtains that are intended for the relevant door by the door
manufacturer.
Transmitter and receiver light curtains must only be replaced in pairs so as to ensure
that the same software and hardware status is present.
Repairs must only be carried out by trained personnel.
Versions
Number of channels: From 14 to 70 channels
Connection:
Connection cables 5m and 15m, the total length must not exceed 25m
Connection plug Pig-tail connector with M8 plug, 6-pin, L=130mm

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Technical data
Safety parameters ESPE type 2 as per IEC 61496-2
MTTFD> 100 years; DCAVG > 99% Category 2; PL d
(PFH=7.33.10-9 1/h) as per EN 61508-2;
Category 2 for LIGI-xx-Pxx with only one
suitable external control system for testing
Door widths 1.6 to 10m
Rated voltage 24V DC -58% +25% (10 to 30V DC)
Current consumption Transmitter: Approx. 30mA (24V DC)
Receiver: Approx. 20mA (24V DC)
Power consumption Approx. 1.2W
Detection zone height Max. 1523mm
Channel count Max. 70
Type of light Modulated infrared
Type of switching: Light switching, i.e. the following applies for free detection zones:
OSE output = Alternating signal (approx. 950Hz)
solid state relay SSR = low resistance
Aperture angle Approx. ±5°
Detection capability detection object ≥28mm
OSE output Approx. 950Hz, alternating signal, 4V 20mA, short proof,
reverse polarity protection, max. 100nF, max. 30µA leakage current,
integrated pull-down 220Ω
SSR output 100mA, short proof, max. 220nF, max. 30VDC, max. 21VAC
R on < 35Ω, leakage current < 100µA

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Technical data
Testing
Reaction of the output after activation of the test input for a free detection zone
Test input
Version Reaction of the output
OSE This version is not tested.
solid state relay SSR after max. 100ms change from
low resistance (<35Ω) to high resistance
Ambient light safety ≥100klux
Housing material Aluminium profile, fully filled, with 2K epoxy resin
Connection Pig-tail M8 plug 4-pin, L=130mm
Degree of protection IP67 as per EN 60529
Operating temperature -20 to +60°C
Storage temperature -30 to +70°C
Air humidity Max. 95%
Weight versions dependent
Dimensions versions dependent
Version Normal operation Test/alignment Internal input wiring
T00 <2V >7V 10kΩpull-down resistor to 0V
T05 open 0V...4V or supply
voltage -4V
Reaction of the output after deactivation of the test input for a free detection zone
Version Reaction of the output
OSE Diese Variante wird nicht getestet.
solid state relay SSR after max. 100ms change from
high resistance to low resistance(<35Ω)
switching time Definition
t (turn on delay) ≤100ms light beam interruption
t (turn off delay) ≤800ms uninterrupted detection zone

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10...30VDC
0V/GND
test
not assigned
not assigned
sync
10...30VDC
0V/GND
SSR
SSR
not assigned
sync
brown
blue
black
grey
pink
white
0V/GND
10...30VDC
SSR = Halbleiterrelais
Sync = intere Verbindungsleitung zwischen Empfänger und Sender
Test = aktiv bei 10...30VDC
brown
blue
Transmitter
(light-on switching)
Transmitter
(dark-on switching)
Receiver
light-on switching
brown = +
blue = -
dark-on switching
brown = -
blue = +
Connection scheme, OSE output
Connection scheme, SSR output (R03)
10...30VDC
0V/GND
test
not assigned
not assigned
sync
10...30VDC
0V/GND
OSE
not assigned
not assigned
sync
brown
blue
black
grey
pink
white
OSE = OSE-Ausgang
Sync = intere Verbindungsleitung zwischen Empfänger und Sender
Test = aktiv bei 10...30VDC
Transmitter Receiver

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10...30V test=high level
0V/GND test=low level
open=standard operation
LIGI
+
Adjustment=High level or switch closed
10...30V
Test input
10kΩ
Connection scheme, test input T00
Connection scheme, test input T05

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29
16
Mounting materials

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Channel selection
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
80 - (Anschraubposition variable)
50 - (Anschraubposition variable) 80 - (Anschraubposition variable)50 - (Anschraubposition variable)
206 - Profillänge
198,5 - Profillänge
307,5 - Anzeige LED
352,75 - Anzeige LED
461,5 Gesamtlänge/Schutzfeldhöhe
198,5 - Profile length
307,5 - Display LED
352,75 - Display LED
461,5 - Total length/height of protective field
50 - (Variable screw-on position)50 - (Variable screw-on position) 80 - (Variable screw-on position)

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Version A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
80 - (Anschraubposition variable)
50 - (Anschraubposition variable) 80 - (Anschraubposition variable)50 - (Anschraubposition variable)
206 - Profillänge
198,5 - Profillänge
307,5 - Anzeige LED
352,75 - Anzeige LED
461,5 Gesamtlänge/Schutzfeldhöhe
206 - Profile length
80 - (Variable screw-on position)80 - (Variable screw-on position)

EG-Konformitätserklärung
EC Declaration of conformity
Wir als Hersteller und Bevollmächtigter für die
Zusammenstellung der technischen Unterlagen:
We, the manufacturer and authorized represen-
tative to compile the technical documents:
Witt Sensoric GmbH, Ernst-Lau-Str. 12, 12489 Berlin, Germany
erklären hiermit in alleiniger Verantwortung,
dass folgende Produkte:
hereby declare under our sole responsibility, that
following products:
Lichtgitter LIGI mit den folgenden
Bezeichnungen
Light curtain LIGI with the following
designation
Name Geh. Ausg. Test Strahl-
typ
Kanal-
anzahl
Schutzfeld-
höhe
Torfunktion
mit / ohne Kabel Sonder- ausf.
LIGI
01
07
08
10
OSE T00
A
C
F
K
11..70 495..2520mm
F00
F01
F04
F05
F06
F07
F08
F09
F10
C00
C01
C02
C03
Sxxx
P01
P02
P03
N01
N02
N03
R01
R02
R03
T01
T02
T03
T04
T05
allen einschlägigen Anforderungen der
folgenden EG-Richtlinien entsprechen:
fulfill all relevant requirements of the following
EC directives:
RoHS-Richtlinie 2011/65/EU
EMV-Richtlinie 2014/30/EU
Maschinenrichtlinie 2006/42/EG
RoHS Directive 2011/65/EU
EMC Directive 2014/30/EU
Machinery Directive 2006/42/EC
Folgende Normen oder Teile dieser Normen
wurden angewendet:
Following standards or parts of these were
applied:
EN 12978 Schutzeinrichtungen für kraftbetätigte Türen und
Tore
Safety devices for power operated doors and
gates
EN ISO 13849
Cat. 2, PL-d
Sicherheit von Maschinen – Sicherheitsbezogene
Teile von Steuerungen
Safety of machinery - Safety-related parts of
control systems
IEC 61496-2
Typ 2
Sicherheit von Maschinen – Berührungslos
wirkende Schutzeinrichtungen
Safety of machinery – Electro-sensitive protective
equipment
EN 61000-6-3 Elektromagnetische Verträglichkeit (EMV) – Teil
6-3: Fachgrundnormen – Störaussendung für
Wohnbereich, Geschäfts- und Gewerbebereiche
sowie Kleinbetriebe
Electromagnetic compatibility (EMC) – Part 6-3:
Generic standards – Emission standard for
residential, commercial and light-industrial
environments
EN 61000-6-2 Elektromagnetische Verträglichkeit (EMV) – Teil
6-2: Fachgrundnormen – Störfestigkeit für
Industriebereiche
Electromagnetic compatibility (EMC) - Part 6-2:
Generic standards – Immunity standard for
industrial environments
Berlin, 06.03.2018
Jörg Brech
Geschäftsführer / Managing Director