Pepperl+Fuchs WITTSensoric LIGI-01 User manual

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Original operating instructions
Safety light curtain LIGI-01

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Description
Housing design
01 = standard pro le 16x16mm
Finish
R = without anodised  nish
S = silver
B = black
_W = car wash (optional)
Output versions
OSE = rectangular signal
P01 = PNP - positive switching, light-on switching (preferred con guration)
P02 = PNP - positive switching, dark-on switching
P03 = PNP - light-on/dark-on switching
N01 = NPN - negative switching, light-on switching (preferred con guration)
N02 = NPN - negative switching, dark-on switching
N03 = NPN - light-on/dark-on switching
R01 = SSR - light-on switching
R02 = SSR - dark-on switching
R03 = SSR - light-on/dark-on switching
PP1 = Push-Pull - light = high-level - dark = low-level
PP2 = Push-Pull - light = low-level - dark = high-level
PP3 = Push-Pull - light-on/dark-on switching
Testing
T00 = pull-down resistor, only activates the alignment mode
T01 = pull-down resistor, test/alignment=low or open
T02 = pull-down resistor, test/alignment=high
T03 = pull-up resistor, test/alignment=low
T04 = pull-up resistor, test/alignment=high or open
T05 = open is normal operation, test=low or high
Beam geometry
A = continuous high detection capability
C = standard-compliant detection capability
Active light beams
Active detection zone
in mm
F = Function
00 = with blanking
01 = without blanking
05 = switching blanking/no blanking programmable
07 = Outdoor (always without blanking)
C = Cable length/connector
00 = pig-tail connector with M8 plug, 4-pin
03 = pig-tail connector with M8 plug, 6-pin
S = Special version
015 = standard version
XXX = custom design without functional di󰀨 erence, for example: color, logo, etc.
Order code LIGI - safety light curtain
LIGI-01-BW-P01-T00-A-57-2520-F00-C00-S015

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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 person-
nel.
• 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
animal husbandry, textile theatre curtains, railway level-crossing barriers, barri-
ers that are used solely for vehicle tra󰀩c, and dangerous machines that are not
doors.
• During mounting, installation and commissioning, it must be ensured that the
photo switch system cannot be inuenced 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,
commissioning, 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 hazard-
ous situations that can arise in this way.
• Notwithstanding conformity with harmonised standards, it is not possible to fore-
see 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 separa-
tion distance can be detected.
Mounting, installation and commissioning of safety light curtains may only be
carried out by trained personnel in accordance with the specications of the door
manufacturer. The specications in this operating manual are also to be adhered
to. Operation under conditions other than those intended and modications to the
optics and casing are not permitted and result in loss of EC conformity.
When installing PNP/NPN versions, it must be ensured that the door control sys-
tem 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
briey switching o󰀨 the supply voltage is not suitable.
The safety light curtains are designed in such a way that sunlight and light from
halogen lamps and uorescent 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 unde-
sired activation. These sources of light interference must be dealt with in such
cases by switching o󰀨, 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
Only one light curtain can be mounted in the door opening. In this case, the “door
function” of the light curtain prevents detection by the door itself.
When the light curtain is being mounted, it is to be placed on a stable subsurface.
Ensure that the ground is su󰀩ciently level so that the sensor function can work at
all points.
The rst xing clamp should be around 10cm above the ground and the last clamp
should be 10cm from the end; between these points, xing clamps should be used
to fasten the prole at maximum intervals of 60cm. Optical components (transmit-
ters, receivers, LEDs) must not be covered.
A risk assessment in accordance with the machinery directive is the basis for de-
ciding 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 ashes in this mode.
The green LED remains on for signal reserves greater than 2 and the red receiver
LED ashes with increasing ash 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 ne adjustment the light curtain should be switched o󰀨 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 ash 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
blanking = o󰀨
power supply = OK
blanking = on
Test
(LEDs ashing alternately)
Receiver
Free detection zone
Interrupted detection zone
Test
(LEDs ashing alternately)
Legend
LED lit
LED ashing
LED o󰀨
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. (See pages 12 and 17.)
Rotating the transmitter and receiver increases or reduces the reception level. The more
the level increases, the faster the ash frequency of the red LED will be.
When the maximum ash frequency is reached, the light curtain is optimally aligned and
can be fastened in place.
For PNP or NPN output versions, the test input must now be disconnected from the xed
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.
green
yellow red
Receiver
Excess gain less than 2 Green LED ashing
Excess gain greater
than 2
Flash frequency of red
LED increases with signal
reserve
Transmitter
Alignment mode
(LEDs ashing alternately)
Legend
LED lit
LED ashing
LED o󰀨
Transmitter Receiver
10°
10°

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Error mode
No supply voltage Check supply voltage
Receiver polarity
reversed
Yellow LED ashes
3x, long pause
Check receiver
operating voltage
Short at output Red LED ashes 2x,
long pause
Check output cable,
overload, wrongly
connected, cable de-
fective, output on light
curtain defective
Error in sync cable
Yellow/Red LED
ashes 3x, long
pause
Check sync cable
(PNP/NPN: white;
OSE: yellow), may only
be connected between
transmitter and receiver
Internal device error All LEDs ashing Light curtain must be
replaced
Error mode
Legend
LED lit
LED ashing
LED o󰀨
Transmitter
Transmitter
Receiver
Receiver
green
yellow red

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Light control
Installation steps (critical doors and oors / 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 us-
ing a short lament 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 ash. 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 Transmitter
connection
Installation at door level
(with door function)
Interruptions to the light beam in the door
do not lead to detection.
OSE-LIGI:
brown - 10-30 V DC
white - 0 V/GND
PNP/NPN/SSR-LIGI:
brown - 10-30 V DC
blue - 0 V/GND
Installation in front of door
noncritical standard doors
(without door function)
Door and oor have matt surfaces. OSE-LIGI:
brown - 0 V/GND
white - 10-30 V DC
PNP/NPN/SSR-LIGI:
brown - 0 V/GND
blue - 10-30 V DC
Installation in front of door
critical doors; critical oors
(without door function)
Critical points:
Part or all of the door has a highly reective
surface.
Increased functional safety can be achieved
by programming the signals when the door is
open (see descriptions below).
OSE-LIGI:
brown - 0 V/GND
white - 10-30 V DC
PNP/NPN/SSR-LIGI:
brown - 0 V/GND
blue - 10-30 V DC

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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 interrup-
tion 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 conrms
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 con-
nection 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 ashing
LED o󰀨
green
yellow red
Transmitter Receiver