Panasonic SF4D-A18 Instruction Manual page 110

Safety light curtain type 4
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Functions
(3) Light interference from muting sensor to light curtain
● Use a red LED type sensor. (Example: CX-411)
● Increase the distance A between the light curtain and the muting sensor that causes
interference.
● Displace the beam axis from each other to prevent interference. (Example: Change the
installation height or place them at an oblique angle.)
● Install a light shielding plate.
● Set the light curtain and the muting sensor that causes interference in a staggered
arrangement.
● Attach a slit to reduce the light intensity. (Example: OS-CX series)
If light interference occurs between the muting sensor and light curtain as described in (2) or (3)
it can be prevented by providing the distance A (m) that satisfies the formula below:
Distance (L) between the emitter and
receiver of the light curtain
When L is between 0.2 and 3m
When L is between 3 and 15m
Note that nearby photoelectric sensors can cause light interference in some cases. Please
check the surrounding area to see if there are sources of light interference.
110
Distance (A) between the muting sensor
and light curtain
0.262m or more
L × tan5° = L × 0.0874m or more
© Panasonic Industrial Devices SUNX Co., Ltd. 2020

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