F3SJ-E/F3SJ-B/F3SJ-A
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Self-test Function
A self-test is performed to check for errors when the power is turned
ON. Also, the self-test is regularly performed (within the response
time) while operating.
External Test Function
This function stops the emission using an external signal. It can be
used to verify that a safety system should properly stop when F3SJ is
interrupted.
External Device Monitoring Function
This function detects malfunctions, such as welding, in external relays
(or contactors) that control the hazardous part of a machine.
This function constantly monitors that a specified voltage is applied to
the receiver's external device monitoring input line, and the system
enters lockout state when an error occurs. The relay's operational
delay can be up to 300 ms without being evaluated as an error.
For example, if the normally closed N.C. contact does not close within
0.3 s after the safety outputs turn from ON to OFF, and a specified
voltage is not applied to the external device monitoring line, it is
evaluated as an error and the system enters a lockout state. To utilize
this function properly, use safety relays and contactors that have
force guided or mechanically linked contact structure.
Interlock Function
The F3SJ turns the safety outputs OFF when its power is turned on
or its beam is interrupted and holds this state until reset input is
applied. This state is called "interlock".
Two methods can be used to reset the interlock state: "auto reset that
automatically turns control outputs ON when the interrupting object is
removed" and "manual reset mode that keeps control outputs OFF
until a reset signal is provided, if the interrupting object is removed".
Auto Reset
When the interrupting object is removed from the detection zone, the
safety outputs automatically turn ON. Auto reset is used on machines
where a worker is not able to enter the area between the detection
zone and the hazardous part of the machine.
Manual Reset
When a reset input is given while no interrupting object exists in a
detection zone, the safety outputs turn ON. This allows the machine
to be manually reset using a reset switch after ensuring safety,
preventing unexpected startup.
Auxiliary Output Function
The auxiliary output is used to monitor the status of the F3SJ. This
output can be connected to a device such as programmable
controller.
Muting Function
Muting function temporarily disables safety function of the F3SJ,
keeping safety output ON even if beams are interrupted.
This makes it possible to install safety light curtains for AGV passage,
enabling both safety and productivity.
Override Function
The override function turns the safety outputs ON when the muting
start condition is not satisfied. If a workpiece stops while passing
through the F3SJ, as shown below, causing a muting error, the
normal state cannot be recovered unless the workpiece is removed
from the muting sensors and the detection field of the F3SJ. However,
the override function will mute the safety outputs of the F3SJ so that
the conveyor can be restarted to move the workpiece out of the
muting sensors and detection zone.
Partial Muting Function
Partial muting function secures safety without enabling muting except
for beams when a workpiece passes.
Position Detection Muting
A limit switch or other means is used to detect when the robot is in a
safe position, and muting is then applied.
Fixed Blanking Function
Fixed blanking function disables a specific beam of the F3SJ. This
function keeps safety output ON even when part of machinery
equipment exists within a detection zone.
Floating Blanking Function
Floating blanking function increases the diameter of the F3SJ's
detection capability and turns OFF the safety output when multiple
objects are detected. When there is a moving object with a fixed width
in the detection area that we do not want to detect, the detection
function can be disabled.
Warning Zone Function
When an individual enters, a warning lamp lights or buzzer sounds
without stopping the equipment by dividing the detection zone into the
detection zone and a warning zone.
Setting Tool
The following setting tools (sold separately) can be purchased in
order to change or confirm various F3SJ-A parameters.
• F39-MC21 Setting Console
• F39-GWUM SD Manager Setting Support Software for the F3SJ
Series Connection Function
Up to 3 sets of the F3SJ-Bs or up to 4 sets of F3SJ-As can be series-
connected. Series connection allows them to be used as a safety light
curtain, requiring only one set to be wired to a controller and
preventing mutual interference.