F3SJ-E/F3SJ-B/F3SJ-A
44
No series connections
Mutual interference is prevented in up to three sets, using
interference light detection and cycle shift algorithm.
If 4 or more sets of F3SJs are installed and are not connected to each
other, arrange them so that mutual interference does not occur.
If two sets are installed near each other, reflection from the surface of
the F3SJ may cause mutual interference. When mutual interference
occurs, the safety outputs are turned OFF momentarily or the F3SJ
enters lockout state. Combining countermeasures 1 to 3 shown below
is effective.
1. Install a physical barrier
2. Alternate the direction of emission (alternation)
3. Keep sufficient distance between the F3SJs so that mutual
interference doe
s not occur
Installation shown below may cause mutual interference. When
mutual interference occurs, the safety outputs are turned OFF
momentarily or the F3SJ enters lockout state.
If two sets are installed near each other, reflection from the surface of
the F3SJ may cause mutual interference. Use of F3SJ-A can improve
the condition by shortening operating range with the setting tool.
Distance between emitter and
receiver
(operating range L)
Allowable installation
distance D
For 0.2 to 3 m 0.26 m
For 3 m or more L x tan5° = L x 0.088 (m)
Emitter 1 Receiver 1 Emitter 2 Receiver 2
Aligned horizontally
Aligned fore and aft
Aligned vertically
Emitter 1Receiver 1
Emitter 2 Receiver 2
Emitter 1 Receiver 1
Emitter 2Receiver 2
Emitter 1Receiver 1
Emitter 2 Receiver 2
Emitter
Receiver
Emitter
Receiver
Emitter Receiver
Emitter Receiver
D
L
D
5°
5°
Aligned horizontally
Aligned fore and aft
Aligned vertically
Emitter 1 Receiver 1 Emitter 2 Receiver 2
Emitter 1 Receiver 1
Emitter 2 Receiver 2
Emitter 1 Receiver 1
Emitter 2 Receiver 2
Emitter Receiver
Emitter Receiver
Interference light
Emitter Receiver
Emitter Receiver
Interference light
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