Installation Considerations; Detection Zone And Approach - Omron F3SG series User Manual

4-1. Installation Considerations

4-1-1. Detection Zone and Approach

Install a protective structure so that the hazardous part of a machine can only be reached by
passing through the sensor's detection zone. If access to the hazardous part by reaching over
the detection zone of a vertically mounted F3SG-R cannot be excluded, the height of the
detection zone and the safety distance shall be determined in consideration of such a risk.
Install the sensors so that part of the person is always present in the detection zone when
working in a machine's hazardous zones. If a person is able to step into the hazardous zone of
a machine and remain behind the F3SG-R's detection zone, configure the system with Restart
Interlock function. Failure to do so may result in serious injury due to unexpected startup.
Do not use this sensor for machines that cannot be stopped by electrical control. For
example, do not use it for a pressing machine that uses a full-rotation clutch. Otherwise,
the machine may not stop before a person reaches the hazardous part, resulting in
serious injury.
To use the F3SG-R in PSDI mode (Reinitiation of cyclic operation by the protective equipment), you
must configure an appropriate circuit between the F3SG-R and the machine. For details about
PSDI, refer to OSHA1910.217, IEC61496-1, and other relevant standards and regulations.
Install the reset switch in a location that provides a clear view of the entire hazardous
zone and where it cannot be activated from within the hazardous zone.
Do not use the F3SG-R in environments where flammable or explosive gases are pres-
ent. Doing so may cause an explosion.
The F3SG-R cannot protect a person from an object flying from a hazardous zone. Install protective
cover(s) or fence(s).
Correct installation
The hazardous zone of a machine can be reached
only by passing through the sensor's detection zone.
Incorrect installation
It is possible to reach the hazardous zone of a machine
without passing through the sensor's detection zone.
While working, a person is inside
the sensor's detection zone.
A person is between the sensor's detection
zone and the hazardous zone of a machine.
Wiring/Installation
Safety distance reflects the possible access to the
hazardous zone by reaching over the detection zone.
It is possible to access the hazardous zone
by reaching over the detection zone.
F3SG-R
User's Manual
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