FF-LS Series
•
Industrial Safety Products
•115
!
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as system
installation information.
• Complete installation, operation and maintenance information is provided in the instructions supplied with each product.
Failure to comply with these instructions could result in death or serious injury.
FF-LS14
Type 4 miniature light curtain,
14 mm/0.55 in resolution
Designed for the protection of operators work stations
FF-LS14 Series
HANNOVER
SACHSEN-ANHALT
FEATURES
• Meets applicable parts of US OSHA
29CFR 1910.217, 1910.212 and ANSI
B11.1, B11.2, B11.19 1990 and RIA
15.06 regulations for Control reliability
• EC type examination certificate granted
by the TÜV
• Designed in compliance with the IEC/EN
61496 - parts 1 & 2 for Type 4
Electrosensitive Protective Equipment
(permanent self-checking equipment)
• Through-scan small profile sensing units
with separate control unit
• Minimum object detection capability:
ø14 mm / 0.55 in suitable for fingers
detection
• Scanning range from 0,2 m up to 3,5 m /
0.65 ft up to 11.48 ft.
• Protection heights: from 196 mm up to
744 mm / 7.72 in up to 29.31 in
• Global response time: less than 50 ms
• Power supply voltage: 24 Vac/dc
• Outputs: 2 guided contacts safety
relays
• Test input
• Automatic restart or start & restart
interlock
• Sealing: IP 65 (sensing units and
control unit)
• Immunity to ambient light: 50 000 Lux
max.
TYPICAL APPLICATIONS
• Paper-cutting machines
• Pick-and-place robots
• Light electronic assemblying machines
• Textile machines
• Leather presses
• Matching centres
The FF-LS14 equipment is an ultra-compact infrared multibeam device designed to protect
operators working on dangerous machines. The FF-LS14 equipment features are ideal for the
protection of work stations where space is critical such as paper-cutting machines or pick-
and-place robots. Thanks to a small resolution, it will spring into action even if a finger gets
too close: any intrusion will lead to the immediate stoppage of the moving part of the ma-
chine.
Each sensing unit is made up of a row of emitting circuits alternating with receiving circuits.
These circuits are housed in an extremely small aluminium extruded profile: the cross section
is only 23 mm x 35 mm / 0.90 in x 1.38 in, the smallest available on the market in its class. These
ultra-compact dimensions, backed by in-line connectors, allow the FF-LS14 to be mounted on
small machines or in other applications where light curtains were previously too large. Its small
resolution - the smallest on the market - allows the closest installation to the dangerous area,
thanks to no additional safety distance in the safety distance calculation formula (EN 999).
The permanent self-checking electronic process is based on a microprocessor technology and
meets the requirements of the IEC/EN 61496 - parts 1 & 2 European standards for Type 4
electrosensitive protective equipment. It has been granted the EC type examination certificate by
the TÜV.
The equipment consists of a pair of identical length sensing units, a separate control unit and a
pair of RS-485 connection cables. It is supplied with mounting brackets, a test rod and cable
glands for the terminal strip connections.
The two sensors are matched to each other by individual coding to reduce risk of cross talk with
other light curtains and to improve immunity to welding splashes.
The control unit supplies the sensing units, controls the correct operation of the scanning
circuits and transmits the resulting commands to the machine control circuitry through its
two relay outputs.
The equipment can operate according to two different modes selected with an internal selec-
tor: the automatic mode or the start & restart interlock mode.
In addition, the control unit is featured with a test input to trigger the output relays switching
and thus check the correct operation of the final switching devices whenever needed.
In case of failure, the control unit provides an acoustic signal and 6 different optical signals to
ease failure diagnostic.
Type 4
per pr EN 50100 - 1/2
Approved as