Photoelectric retro-reflective sensor
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Safety notes
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Correct use
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Commissioning
8012138.YCB8 | SICK
Subject to change without notice
Operating instructions
Read the operating instructions before commissioning.
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Connection, mounting, and setting may only be performed by trained specialists.
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Not a safety component in accordance with the EU Machinery Directive.
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UL: Only for use in applications in accordance with NFPA 79. These devices shall
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be protected by a 1 A fuse suitable for 30 V DC. Adapters listed by UL with connec‐
tion cables are available. Enclosure type1.
When commissioning, protect the device from moisture and contamination.
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These operating instructions contain information required during the life cycle of
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the sensor.
The WLG4S-3 is an opto-electronic photoelectric retro-reflective sensor (referred to as
"sensor" in the following) for the optical, non-contact detection of objects, animals, and
persons. A reflector is required for this product to function. If the product is used for any
other purpose or modified in any way, any warranty claim against SICK AG shall become
void.
Photoelectric retro-reflective sensor with optional add-on for detecting transparent ob‐
jects (WLxxG-xxxx).
Image: A
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Adjust the distance between the sensor and the reflector according to the corre‐
sponding diagram [H] (x = sensing range, y = operating reserve).
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