F3W-E
7
Safety Precautions
Refer to Warranty and Limitations of Liability.
Do not apply the F3W-E as safety mechanisms
used in pressing machines or any other safety
mechanisms for protecting the human body
from danger.
(1) Do not apply the F3W-E as safety mechanisms used in
pressing machines, shears, rolling machines, spinning
machines, cotton mill machines, or robots for the
protection of an operator's hands and body.
(2) The F3W-E is designed for detection of the human body or
moving objects in the detection area but not for protection
against danger.
(3) The F3W-E or any product incorporating the F3W-E may
be exported to any country. Should the F3W-E cause any
problem conflicting with local laws or related to product
liability locally, however, OMRON shall, without exception,
assume no responsibility for it.
Before using more than one F3W-E Sensor in parallel or
series, take necessary countermeasures against mutual
interference so that the Sensors will not malfunction. Refer to
Mutual Interference Prevention Function on the right.
● Operating Environment
• Do not use the Sensor in an environment containing
flammable or volatile gases.
• Do not use the Sensor underwater.
• Do not disassemble, repair, or modify the Sensor.
• Always turn OFF the system power before installing or
replacing the Sensor.
Do not use the product in atmospheres or environments that
exceed product ratings.
● System Design
Mutual Interference Prevention Function
1. Mutual Interference Prevention with Sets of Two to
Four Sensors
Set these Sensors to different frequencies with the frequency
selector. Refer to Setting Method on page 6.
If the mutual interference prevention function is not used, and
there are two Sensors with the same frequency setting, a
beam from the Emitter of one Sensor may hit the Receiver of
the other Sensor, resulting in malfunction.
This function cannot prevent mutual interference between the
F3W-E Sensor and a Photoelectric Sensor of a different
model.
2. Five or More Sets of Sensors:
When 5 or more sets of Sensors are used in parallel, mutual
interference may result in malfunction. Take the following
measures to prevent mutual interference, and check for
mutual interference.
• The distance between two adjacent sets of Sensors must
be at least l
1 or l2, which does not cause mutual interference
between two Sensors with the same frequency setting. l
1 or
l
2 is at least 1.5 times the distance shown in Parallel
Operating Range of the Engineering Data.
• Install a light baffle so that there will not be mutual
interference between Sensors with the same frequency
setting. (See Figure 1.)
Light reflections from the wall or floor may go around a light
baffle and reach the Receivers. Install a light baffle so that
it will also block any light reflections. (See Figure 2.)
WARNING
CAUTION
Precautions for Safe Use
Precautions for Correct Use
l
1
Distance X
ReceiverEmitter
ReceiverEmitter
l
2
Emitter Receiver
Emitter Receiver
Distance X
Vertical Installation
Horizontal Installation
Emitter Receiver
Emitter ReceiverEmitter Receiver
Light baffle
Wall
Wall
Light baffle
(Figure 2)
Emitter Receiver
Correct
Incorrect
Light baffle
(Figure 1)
ReceiverEmitter
ReceiverEmitter
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