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
116
Industrial Safety Products
FF-LS Series
FF-LS14
4 / 0.154 / 0.15
PH
Protected zone
220 Vac
115 Vac
24 Vdc
Power supply
(2)
Cable length: 10 m / 32.8 ft
35 / 1.38 (+0,5 / -0.0)
22,8 / 0.89
(+0,6 / -0,0)
Sensor B
Sensor A
240 / 9.45
43 / 1.69
30.75 /
1.21 29.25 /
1.15
226 / 8.90
140.0 / 5.51
145 / 5.71
146 / 5.75
160 / 6.30
96 / 3.78
78 / 3.07
40 /
1.57 35 /
1.38 25 /
0.98 25 /
0.98 25 /
0.98 20 /
0.78 20 /
0.78
20 /
0.78 25 /
0.98
160 / 6.30
160 / 6.30
60 / 2.36
160 / 6.30
160 / 6.30
160 / 6.30
30.75/
1.21
2
1
43 / 1.69
30/
1.18
30/
1.18
50/
1.97
/
0.70
Connector
RS-485
Type 4
per pr EN 50100 - 1/2
Approved as
HANNOVER
SACHSEN-ANHALT
FF-LS14FF-LS14
FF-LS14FF-LS14
FF-LS14
Type 4 according to IEC/EN 61496 - parts 1& 2
•ø14 mm / 0.55 in object detection capability
Reduced dimensions (23 mm x 35 mm / 0.90 in x 1.38 in cross section)
Dimensions in millimeters / inches, meters / feet, weights in kg / lbs
Specifications Supply voltage 22 to 30 Vdc or 18 to 25 Vac
Current consumption < 300 mA
Output switching capacity
Main out 1 & out 2
: 4 A/250 Vac /
Lamp
: 4 A/42 V
Material
Sensors
: Aluminium profile
Control unit
: Polycarbonate
Housing Size
Sensors:
23 mm x 35 mm x PH mm / 0.90 in x 1.38 in x PH in
Control unit:
50 mm x 160 mm x 240 mm / 2.36 in x 6.30 in x 9.45 in
Emission Modulated infrared light (880 mm)
Resolution ø14 mm / 0.55 in
Alignment tolerance According to IEC/EN 61496 - 2 standard
Operating temperature 0 °C to 55 °C / 32 °F to 131 °F
Sealing
Sensors and control unit
: IP 65
Electromagnetic immunity According to IEC 801-4: level IV/According to IEC 801-3 level III
Light immunity 50,000 Lux
Status indicators Lamps to be connected to outputs available on control units
Range 0,2 m to 3,5 m / 0.65 ft to 11.48 ft
Electrical wiring (delivered with the unit)
Sensors
: RS-485 cable/Pre-wired connectors (10 m / 32.8 ft)
Control unit
: Screw terminal
Sensors A and B have the same dimensions.
Ordering information (1)
FF-LS
oo
14
ooo
2
Notes: Control unit
(4 mounting M4 holes) Power supplies (2)
(1) Each reference corresponds to the delivery
of a complete set: A/B sensors, control unit,
2 RS-485 cables (pre-wired 10 m / 32.8 in),
brackets,
8 cable glands and a ø14 mm / 0.55 in test rod.
(2) Power supply: The use of one of these
supplies brings the galvanic isolation which is
necessary for the system to be in compliance
with IEC/EN 61496-1 standard.
FF-LSZUS0605 (230 Vac / 24 Vdc)
FF-LSZUS0606 (115 Vac / 24 Vdc)
These power supplies must be ordered separately.
(3) Control unit and sensors.
Nominal Protection Height mm / in PH 196 / 7.72 378 / 14.89 561 / 22.10 744 / 29.31
Number of beams 16 32 48 64
Response time t1 < 50 ms < 50 ms < 50 ms < 50 ms
Weight of the device (3) kg / lbs 1,85 / 4.07 2,06 / 4.53 2,26 / 4.97 2,48 / 5.45
Number of
beams
16
32
48
64
Protection
height (PH)
(mm / in)
196 / 7.72
378 / 14.89
561 / 22.10
744 / 29.31
Model
196
378
561
744
FF-LS14
Industrial Safety Products
117
FF-LS Series
Stopping
machine
circuitry (4)
1.1
1.2
2.1
2.2
Main
Out 1 Main
Out 2
X1 X2
Max. 4A
42 Vdc/Vac
ON
OFF
COM
X1
X2
X1X1 X2
1
2
3
4
5
6
7
18-25 Vac
22-30 Vdc
Supply
Vin1 Vin2
+
-
+
-
Test
+
-
A
B
Sh
+
-
A
B
Sh
BROWN
GREEN
YELLOW
WHITE
BLACK
BROWN
GREEN
YELLOW
WHITE
BLA CK
RS485
RS485
Sensor A Sensor B
Stopping contacts
Indicators
(1)
Green lamp
Red lamp
(3) (2)
Restart
Vin 2
Vin 1
-
+
7
6
5
4
3
1
2
Buzzer
H
N
ON
OFF
Buzzer
switch Function
switch
Supply
fuse
Output contact fuses
NSR-0605
S
H
α
Tool
Tool
Plunger
Safety distance
S: Minimum safety distance (mm / in)
t1:Response time of the light curtain (s)
t2:Stopping time of the equipment guarded by the light
curtain, including all mechanical, electromechanical and
electronic parts. (s)
H: Height of the detection zone above the floor (mm / in)
The safety distance between the protection field and the
dangerous zone should be large enough to ensure that if the
protection field is entered, the dangerous zone cannot be
reached before the hazardous movement is arrested. For the
safety distance, the following formula applies:
Normal Approach
Europe (EN 999)
S
2000 (t1 + t2) (mm), with S
100 mm
(or S
78.8 (t1 + t2), with S
3.9 in
If the result of this calculation is greater or equal to 500 mm/
19.7 in, then use the following formula:
S
1600 (t1+ t2) (mm), with S
500 mm
(or S
63 (t1 + t2) (in), with S
19.7 in
US (OSHA 29 CFR 1910.217, ANSI B11.19 1990
Ds
(t1 + t2) + 0.9315 (in) Ds = S
Optical and acoustic signals of the control unit As shown in the figure here
below, there are 7 LEDs on the
control unit. The green LEDs 1, 2
and 3 are constantly alight when
the supply voltage is present.
The system condition is indicated
by the yellow LEDs 4 and 6, the
red LEDs 5 and 7 and an acoustic
signal. This signal can be
switched on or off by the buzzer
switch on the PC-board.
Connection diagram (1) - Supply (to be ordered
separately): The use of one of these
supplies brings the galvanic isolation
which is necessary to the system for
a use conform to IEC/EN 61496 - 1
standard.
FF-LSZUS0605 (230 Vac / 24 Vdc),
FF-LSZUS0606 (115 Vac / 24 Vdc)
(2) - Test duration: The contact must
be closed during 100 ms as a
minimum.
(3) - The push-button must remain
closed during 200 ms at least. It
takes 500 ms for the system to
restart after releasing the push-
button.
(4) - If additional contacts are needed
or if the switching capacity must be
increased, use the connection
diagram given or an example.
118
Industrial Safety Products
FF-LS Series
FF-LS14
10 /
0.394
10 /
0.394
100 / 3.94
20 /
0.78
20 /
0.78
20 / 0.78
6 /
0.23 9,7 /
0.38 4,3 /
0.16
M3 ø3,5 / 0.13
3,5/
0.13
6,5/
0.25
1,5 / 0.05
6/
0.23 6/
0.23
3,5 / 0.13
M3
ø3,5 / 0.13
20 / 0.78 20 / 0.78
100 / 3.94
3,5/
0.13 3,5/
0.13
==
+1.1
1.2
2.1
2.2
-+
-
FF-LS
control
unit
FSD
K2 K2
K1
Start
push-button
Hold
Start Interlock
TEST X1 X2
K1
Machine
control circuit
FSD
K1
(1)
(1)
K2
+
-
Straight bracket
Kit of 2 straight brackets for an installation parallel to the
sliding rail.
Right-angle bracket
Kit of 2 right-angle brackets for an installation perpendicular
to the sliding rail.
Note: All FF-LS equipment is delivered with both types of
brackets. The number of brackets available allows to fix one
bracket every 500 mm / 19.7 in along the profile.
Example of Installation
For a correct installation, brackets must be fixed on a plain
base in order to avoid profile deformation.
Accessories
FF-LSZKA0611: Connecting cable
One 10 m / 32.8 ft RS485 prewired cable for the connection of one sensing unit to the control unit.
Connection diagram example: Start/Restart interlock/Final Switching Device (FSD) monitoring
(please refer to EN 954 for electrical interface)
(1) RC (220 + 22 µF)
for ac interface (or
varistors for dc
interfaces) increases
the life of contacts and
improves electrical
noise immunity.
FF-LSZMS720
FF-LSZMS730
Examples
Fixing
screw Fixing
screw
Plain base
Sliding
rail