Omron F3SG-SRB Series User Manual page 10

If detection capability may get larger and a human body may pass a detection zone to reach a
hazardous source, additional safety protection equipment must be installed such as a safety
fence.
A warning zone must not be used for safety applications. Always install your system so that a
detection zone should be passed before reaching a hazardous part of the machine. If access to
the hazardous part by reaching over the detection zone of a vertically mounted F3SG-SR cannot
be excluded, the height of the detection zone and the safety distance shall be determined in
consideration of such a risk.
When a warning zone is configured, you must attach labels that indicate a border between
normal detection zone and warning zone. Otherwise, the machine may not stop before a person
reaches to the hazardous part, resulting in serious injury.
A warning zone must be configured based on a safety distance.
The Muting and Override functions disable the safety functions of the device. Especially setting
the Muting Time Limit parameter to infinite may cause the safety functions to be disabled for a
long time. Install the F3SG-SR, muting sensor and physical barrier and configure time settings
for Muting and Override so that an operator should not enter hazardous zone when the Muting
and Override are active.
Install muting sensors so that they can distinguish between the object that is being allowed to
pass through the detection zone and a person. If the Muting function is activated by the detection
of a person, the machine may not stop operating, resulting in serious injury.
Muting lamps that indicate the state of the Muting and Override functions must be installed where
they are clearly visible to workers from all the operating positions.
Use two independent input devices for muting inputs. Failure to do so may cause the MUTING
state due to a single muting sensor's failure.
Install the switch that activates the Override and that uses hold-to-run device, such as spring
return key 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. Make sure that nobody is in the
hazardous zone before activating the Override function.
Make sure to connect an override cancel switch to the RESET line when using the Override
function. Otherwise, the OVERRIDE state may not be released by the override cancel switch,
resulting in serious injury.
Install the F3SG-SR so that it is not affected by reflective surfaces. Failure to do so may hinder
detection, resulting in serious injury. For an installation distance from reflective surfaces, see 5-
1-3. Distance from Reflective Surfaces.
When using more than one set of F3SG-SR's in adjacent areas, the emitter of one F3SG-SR
may interfere with the receiver of the other, causing the safety functions to stop working properly.
Install, configure and maintain them so that mutual interference does not occur.
To change the response time, calculate the safety distance based on the setting. Otherwise, the
machine may not stop before a person reaches the hazardous part, resulting in serious injury.
F3SG-SR
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User's Manual