Safety Notes; Correct Use - SICK WT 23-2-Serie Bedienungsanleitung

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Safety notes

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Correct use

3 Commissioning
8015974.YVM5 | SICK
Subject to change without notice
Photoelectric proximity sensor
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 type 1.
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 WTx23-2 is an opto-electronic photoelectric proximity sensor (referred to as "sen‐
sor" in the following) for the optical, non-contact detection of objects, animals, and per‐
sons. If the product is used for any other purpose or modified in any way, any warranty
claim against SICK AG shall become void.
1 WT23-2, WTB23-2: Photoelectric proximity sensor with background suppression:
Check the application conditions: Adjust the sensing range and distance to the
object or background and the remission capability of the object according to the
corresponding diagram [H] (x = sensing range, y = transition range between the set
sensing range and suppression of the background as a % of the sensing range
(object remission/background remission)). Remission: 6% = black , 18% = gray
, 90% = white  (referring to standard white as per DIN 5033).
The minimum distance (= y) for background suppression can be determined from
diagram [H] as follows:
Example: x = 400 mm, y = 30% => 30% % of 400 mm = 120 mm. That is, the
background is suppressed at a distance of > 520mm from the sensor.
WTE23-2: Photoelectric proximity sensor, energetic: Check the application condi‐
tions: Adjust the sensing range and the remission capability of the object according
to the corresponding diagram [H] (x = sensing range, y = operating reserve).
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