Table of Contents
Advertisement
Access Detection (Detecting the Entire Body)
When constructing a protective shield, the SE1L can be
installed vertically. In the application below, it is used to
prevent access into hazardous areas. When an object
or human enters the hazardous area, the OSSD signal
switches from ON to OFF. When the SE1L is installed
vertically, an object or human is detected by the vertical
sensing plane. The front and rear of the sensing plane
cannot detect objects or humans. Therefore, the distance
between the approach and hazardous area must be
carefully determined. The reference monitor function must
be used for this kind of application. If a displacement
occurs within the reference background, the OSSD signal
turns OFF.
Application example
Safety distance (front view)
Protection
Zs
Zs
Safety distance (side view)
Calculation
S = (K × (T
+ T
) ) + C
m
s
S = Safety distance (mm)
K = Approach speed 1600 (mm/s)
T
= Maximum stopping time of the machine or system (s)
m
T
= Response time of SE1L (s)
s
C = Additional distance for entry of fingers 850 (mm)
(14/04/28)
Non-safety
area
a
zone
Hazardous
Hazardous
area
area
S
SE1L
Safety Laser Scanner
x Install the SE1L so that the distance between the
end of the hazardous area and the origin of the
protection zone "a" is shorter than the minimum
sensing width. If the distance of "a" is longer
than the minimum sensing width, additional
protection measures must be taken so that
objects cannot enter the unprotected area.
x For access detection applications, if the
approach angle exceeds ±30º be sure to use the
"reference monitor function" The response time
must be 90 ms maximum for access detection
applications. 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 setting the minimum sensing width to 30 mm,
the value C can be replaced by 0.
Access Detection (Detecting Parts of a Body)
When constructing a protective shield, the SE1L can be
installed vertically. It is used to prevent a part of a body
from reaching a hazardous area. When an object or a part
of a body enters the hazardous area, the OSSD signal
switches from ON to OFF. When the SE1L is installed
vertically, the vertical side of the object or human is
detected. The front and rear of the sensing plane cannot
detect objects or humans. Therefore, the distance between
the approach and hazardous area must be carefully
determined. The width of the protection zone must be
configured to fully cover the hazardous area. The reference
monitor function must be used for this kind of application.
If a displacement occurs with the reference background,
the OSSD signal turns OFF. For details, see the user's
manual.
Safety distance (side view)
S
Safety distance (front view)
Hazardous Area
Protection
Area
Hazardous
Hazardous
area
area
Reference
Background
O
15
Advertisement
Table of Contents
