SICK 1053536 WL12G-3P2582 Transparent-object Sensor

Technical Overview

The SICK WL12G-3P2582 is a infrared LED retro-reflective photoelectric sensor for transparent-object detection. Polarized coaxial optics operate without a reflector minimum distance, with a 0–4 m maximum range using PL80A. An 850 nm infrared LED produces a typical 100 mm spot at 3 m. Single-button teach-in selects sensitivity, with Mode I 10% and Mode II 18% attenuation settings and AutoAdapt. Complementary PNP outputs provide light/dark switching signals to external control. Response is ≤333 µs under resistive load, with 1,500 Hz operation at a 1:1 light/dark ratio. The zinc diecast housing has a PMMA front screen, IP66/IP67 protection and an M12 five-pin connector.

Transparent-object infrared LED sensor with 0–4 m maximum PL80A range, 10%/18% teach-in modes, AutoAdapt and complementary PNP outputs.

Key Features

Transparent-object retro-reflective sensing with polarized coaxial optics

0–4 m maximum range using PL80A; no reflector minimum distance

850 nm infrared infrared LED; typical Ø100 mm spot at 3 m

Single teach-in button; Mode I 10% and Mode II 18% attenuation

AutoAdapt; external teach connection on pin 5

Complementary PNP light/dark switching outputs, ≤100 mA

≤333 µs response with resistive load; 1,500 Hz at 1:1 light/dark ratio

10–30 V DC; 40 mA without load; M12 five-pin connector

Zinc diecast housing and PMMA screen; IP66/IP67

Two BEF-KH-W12 clamps with screws included

Technical Specification Matrix

Parameter	Value
Functional principle	Photoelectric retro-reflective sensing for transparent objects; polarized coaxial/autocollimation optics
Maximum sensing range	0–4 m with PL80A reflector
Reflector minimum distance	No minimum distance with coaxial optics
Polarization filter	Yes
Light source	Infrared LED
Wavelength	850 nm
Light spot size	Typically Ø100 mm at 3 m
LED service life	Average 100,000 h at ambient +25 °C
Adjustment	Single teach-in button; external teach input on pin 5
Digital output	Complementary PNP switching outputs, maximum output current ≤100 mA
Switching mode	Light/dark switching
Response time	≤333 µs with resistive load
Switching frequency	1,500 Hz at 1:1 light/dark ratio
Power supply	10–30 V DC; operate in short-circuit protected supply network, maximum 8 A
Current consumption	40 mA without load
Residual ripple	<5 Vpp; remain within supply limits
Protection class	III
Circuit protection	A: supply reverse-polarity protection; B: inputs and output reverse-polarity protection; C: interference suppression; D: outputs protected against overcurrent and short circuits
Housing design	Rectangular
Housing material	Metal, zinc diecast
Front screen	PMMA plastic
Connection	Male M12 five-pin connector
Mounting provisions	M4 threaded mounting hole, 4 mm depth; Ø4.2 mm mounting hole
IP rating	IP66/IP67
Operating temperature	−40 to +60 °C
Storage temperature	−40 to +75 °C
Physical Weight (kg)	0.12
Pin assignment	1 BN=L+; 3 BU=M; 4 BK=Q; 2 WH=/Q; 5 GY=Teach (CD-146)
Attenuation modes	Mode I 10% and Mode II 18%
AutoAdapt	Yes
Signal voltage PNP HIGH/LOW	Approximately supply voltage −2.5 V / 0 V
Items supplied	Two BEF-KH-W12 clamps, including screws
MTTFD	1,099 years
DCavg	0%

Parameter

Value

Functional principle

Photoelectric retro-reflective sensing for transparent objects; polarized coaxial/autocollimation optics

Maximum sensing range

0–4 m with PL80A reflector

Reflector minimum distance

No minimum distance with coaxial optics

Polarization filter

Yes

Light source

Infrared LED

Wavelength

850 nm

Light spot size

Typically Ø100 mm at 3 m

LED service life

Average 100,000 h at ambient +25 °C

Adjustment

Single teach-in button; external teach input on pin 5

Digital output

Complementary PNP switching outputs, maximum output current ≤100 mA

Switching mode

Light/dark switching

Response time

≤333 µs with resistive load

Switching frequency

1,500 Hz at 1:1 light/dark ratio

Power supply

10–30 V DC; operate in short-circuit protected supply network, maximum 8 A

Current consumption

40 mA without load

Residual ripple

<5 Vpp; remain within supply limits

Protection class

III

Circuit protection

A: supply reverse-polarity protection; B: inputs and output reverse-polarity protection; C: interference suppression; D: outputs protected against overcurrent and short circuits

Housing design

Rectangular

Housing material

Metal, zinc diecast

Front screen

PMMA plastic

Connection

Male M12 five-pin connector

Mounting provisions

M4 threaded mounting hole, 4 mm depth; Ø4.2 mm mounting hole

IP rating

IP66/IP67

Operating temperature

−40 to +60 °C

Storage temperature

−40 to +75 °C

Physical Weight (kg)

0.12

Pin assignment

1 BN=L+; 3 BU=M; 4 BK=Q; 2 WH=/Q; 5 GY=Teach (CD-146)

Attenuation modes

Mode I 10% and Mode II 18%

AutoAdapt

Yes

Signal voltage PNP HIGH/LOW

Approximately supply voltage −2.5 V / 0 V

Items supplied

Two BEF-KH-W12 clamps, including screws

MTTFD

1,099 years

DCavg

Industrial Applications

1. Counting separated transparent containers

A conveyor can align the sensor and a PL80A reflector across a path carrying separated transparent containers. Each container changes the returned light for external counting logic. Setup uses the 0–4 m maximum range with PL80A, adjusts the single-button teach-in and checks actual wall thickness, finish, alignment and clear gaps against representative production samples.

Problem Solved

A transparent-container passage reference gives external counting logic a way to track separated products whose clear walls may pass much of the light used by ordinary opaque-object detection arrangements.

Transparent containers Reflector return External counting

2. Confirming a clear tray at a transfer position

A transfer station can place a PL80A reflector opposite the sensor so a clear tray crosses the optical path at its expected seated position. The single-button teach-in establishes a usable return threshold with representative loaded and empty conditions. External machine logic evaluates the switching state alongside its own transfer sequence after commissioning checks tray ribs, seams and positioning variation.

Problem Solved

A clear-tray presence reference helps external transfer control recognize whether the expected carrier has arrived, supporting coordinated release of the next load when visual transparency complicates ordinary presence checks.

Clear tray Transfer presence Sensitivity setting

3. Monitoring continuity of a transparent film feed

A feeder can route transparent film between the sensor and a reflector so the normal web changes the reflected-light level. External feeder logic evaluates a transition toward the unobstructed return as a possible loss of material. Commissioning tests actual film grade, thickness, flutter, seams and reflector alignment while adjusting the single-button teach-in for the expected production conditions.

Problem Solved

A film-present versus clear-path reference helps external feeder control recognize possible material loss, reducing the chance that downstream processing continues without the expected transparent web.

Transparent film Material continuity External feeder control