KEYENCE SL-R12EX - Manual (Page 18)

Chapter 2 Functions
2-2
2
English ENGLISH
2-2-2 Floating blanking for 2 beam axes
The FSD keeps ON-state when 1 or 2 beam axes are blocked, and turns OFF-state when 3 or more beam
axes are blocked. Note that for the SL-C**F Series the detection capability is ø34 mm (1.33"), and for the SL-
C**H Series the detection capability is ø65 mm (2.56").
2-2-3 Floating blanking for 3 beam axes
The FSD keeps ON-state when 1, 2, or 3 beam axes are blocked, and turns OFF-state when 4 or more
beam axes are blocked. Note that for the SL-C**F Series the detection capability is ø44 mm (1.73"), and for
the SL-C**H Series the detection capability is ø85 mm (3.35").
2-3 Fixed blanking function
WARNING
When this function is carried out, it may
create a hazardous zone allowing human
approach between the obstacle and the SL-C
Series against which the SL-C Series pro-
vides no protection. (See the right diagram.)
Be sure to install additional safety protective
equipment, such as a safe guard, for this
zone. When installing the SL-C Series into/
onto a machine, always follow the instructions
in the SL-C Series Instruction Manual. Failure
to follow this warning may result in significant
harm to machine operators, including serious
injury or death.
Normally, the FSD keeps the ON-state only when all beam axes are
clear of any obstruction (that is, when there are no obstacles present
in the detection zone). The Fixed blanking function is enabled only for
the beam axes in the zone initially specified by the user and allows the
FSD to keep ON-state when an obstacle blocks the beam axes in that
zone.
For example, if an obstacle blocks the beam axes of the SL-C Series,
the FSD turns OFF-state (see the right diagram.) In contrast, if the
light curtain is configured to enable fixed blanking, the FSD keeps ON-
state when an obstacle blocks these pre-set beams. It allows the
target machine to continue the normal operation. Conversely, if the
obstacle is removed from the detection zone while this function is
carried out, the FSD turns OFF-state and it causes the machine stop.
Note that enabling this function may create hazardous zones, allowing
human approach against which the SL-C Series provides no protec-
tion. It is required to install additional safety protective equipment like
a cover designed to prevent human approach.
In order to carry out this function, the SL-C Series need not be a
single transmitter/receiver pair The function can be configured to be
operational for all beam axes on all SL-C Series units connected in
series. (See the right diagram.)
See “4-3 Fixed blanking function” (
➮4-3) for more information about
how to set or configure this function.
: Hazardous zone allowing
human approach
Obstacle
Connected
in series
: Zone where fixed blanking
function is active
Obstacle
Obstacle
Obstacle