16
SE1L
Safety Laser Scanner
Calculation
S = (K × (T
m
+ T
s
) ) + C
S = Safety distance (mm)
K = Approach speed 2000 (mm/s)
T
m
= Maximum stopping time of the machine or system (s)
T
s
= Response time of SE1L (s)
C = Additional distance
=8 × (d − 14)
d=minimum sensing width (mm)
O = Additional width from the end of the hazardous source
≥ (2 × Z
s
) − d
d=Minimum sensing width (mm)
Z
s
=Additional safety distance of SE1L (mm)
x
For access detection applications, if the
approach angle exceeds ±30º be sure to use the
“reference monitor function”
x
Configure the reference area to each side so that
displacement can be detected.
x
Set the tolerance range of the reference area to
100 mm.
x
In order to detect displacement, make sure to set
a reference area on each side.
x
Make sure that the SE1L is installed in a way that
access to hazardous points is impossible. Take
additional protection measures if necessary.
x
Before setting the reference area, take into
consideration the tolerance range.
Note: When S>500 mm, value K can be replaced by 1600 mm/s instead of
2000 mm/s. In this case, S must be larger than 500 mm.
Installation
Light Interference
SE1L is a sensor that transmits pulsed laser for obstacle
detection. Interfering light sources may lead to false
detection. Before using the SE1L, examine the surrounding
environment. Be sure to avoid the following light sources.
1) Incandescent light
2) Florescent light
3) Strobe light
4) Flashing beacon
5) Sunlight
6) Infrared light source
However, if the SE1L must be used under the above
environment, install the SE1L so that the light source is
located more than ±5 degrees from the sensing plane to
prevent light interference.
5 degrees
5 degrees
Sensing plane
Light source
Light source
Protection degree
origin point
x
Be sure to perform a risk assessment for light
interference in the operating environment before
installing the SE1L.
x
Avoid using direct interference light such as
fluorescent light, flashing beacons, or strobe
light.
x
If the above precautions are not followed, critical
injury or death may result.
Mutual Interference
When using several SE1Ls of the same model, pulse laser
signals from different SE1Ls may be falsely detected. To
prevent mutual interference, see the installation methods
shown below.
1) Changing the installation height
Face to face installation
5 degrees minimum
5 degrees minimum
Parallel installation
OSSD OFF
INTERLOCK
OSSD ON
OSSD OFF
INTERLOCK
OSSD ON
5 degrees minimum
5 degrees minimum
2) Changing the installation angle
Face to face installation
Sensing
plane
Sensing
plane
5 degrees min.
Parallel installation
OSSD OFF
INTERLOCK
OSSD ON
OSSD OF
F
INTERLOCK
OSSD ON
Sensing
plane
5 degrees min.
Sensing
plane
3) Using shields
Face to face installation
Sensing plane
Sensing plane
Shield
Parallel installation
OSSD OFF
INTERLOCK
OSSD ON
OSSD OFF
INTERLOCK
OSSD ON
Sensing plane
Sensing plane
Shield
Note: Use a solid and non-transparent material for shields.
(14/04/28)
