Omron F3SG-RA, User Manual

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58
Chapter
2
Mu
ting
F3SG-R
User’s Manual
System Operation and Functions
<Timing chart>
<Reference: Preventing light interference of muting sensor>
When a photoelectric sensor is used as a muting sensor, light interference may cause a muting error of
F3SG-RA.
The cause and measures for light interference are shown as follows:
(1) Interference between muting sensors
• Use sensors with mutual interference prevention (such as retro-reflective E3Z-R  series)
• Use laser-type sensors (such as laser-type E3Z-LR  series)
• Take distance from a sensor causing the interference
• Displace beams for each other to prevent interference (change installation height or place them
crosswise)
• Install a physical barrier
• Attach interference prevention filter (provided for E3Z series as accessories)
• Attach a slit to reduce light intensity (provided for E3Z series as accessories)
• Lower the sensitivity
• Reduce a distance between a workpiece and a muting sensor to prevent reflected light from a workpiece
Muting sensor A2
Muting state
Enabled
Disabled
OSSD
ON
OFF
T2 max.
Muting sensor B1
Unblocked
Blocked
Muting sensor B2
Muting sensor A1
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Beam state
T3 (0.1 s) max.
T3 (0.1 s) max.
T3 (0.1 s) max.
T3 (0.1 s) max.
T1min to T1max
80 ms max.
A2 B2 A1 B 1 A 1 B1 B2 A2 A1 B1 B2 A2
D
Workpiece Workpiece Workpiece
(1) (1)
(1)
(2)
(3)
(1)
Reflected light
Direct light Light from other F3SG-RA
L
F3SG-RA F3SG-RA F3SG-RA