SICK 6036082 WL8G-P2231S01 PNP Transparent-Object Sensor

Technical Overview

The SICK WL8G-P2231S01 is a special-device retro-reflective sensor for transparent objects, using coaxial autocollimation optics without a reflector minimum distance. Its 650 nm red LED provides 0–1.7 m sensing and a 0–3 m maximum range with a PL80A reflector, with a Ø70 mm spot at 2 m. A 270° sensitivity potentiometer and light/dark rotary switch adapt the single PNP output to the installed optical condition. Response is ≤0.5 ms with resistive load and switching frequency is 1,000 Hz at a 1:1 light/dark ratio. The 10–30 V DC sensor uses an M8 four-pin male connector, IP67 ABS housing and PMMA optics, with operation from −25 to +55 °C.

Coaxial transparent-object retro-reflective sensor with 0–1.7 m PL80A sensing, PNP light/dark selection, 270° sensitivity adjustment and M8 connection.

Key Features

Special-device retro-reflective sensor for transparent objects

Coaxial autocollimation optics without reflector minimum distance

0–1.7 m sensing; 0–3 m maximum with PL80A reflector

650 nm visible red LED; Ø70 mm spot at 2 m

270° sensitivity potentiometer and light/dark rotary switch

Single PNP output, ≤100 mA; response ≤0.5 ms with resistive load

1,000 Hz switching at 1:1 light/dark ratio; beam-attenuation specification ≤20%

10–30 V DC; 30 mA no-load current; M8 four-pin male connector

ABS housing, PMMA optics and IP67; operation −25 to +55 °C

M3 threaded mounting holes, maximum torque 0.6 Nm; orange output LED

Technical Specification Matrix

Parameter	Value
Functional principle	Retro-reflective sensing with coaxial autocollimation optics; no reflector minimum distance
Special application	Detecting transparent objects; special-device version
Sensing range	0–1.7 m with PL80A reflector
Maximum sensing range	0–3 m with PL80A reflector
Additional reflector ranges	Sensing / typical maximum: P250F 0–1.9 / 0–2.5 m; PL20F 0–1.0 / 0–1.3 m; PL10F 0–0.6 / 0–0.7 m
Light source	650 nm visible red LED
Average LED service life	100,000 h at +25 °C
Light spot size	Ø70 mm at 2 m
Adjustment	270° sensitivity potentiometer
Switching output	Single PNP output; maximum current ≤100 mA
Switching mode	Light/dark switching selected by rotary switch; L=light, D=dark
PNP signal voltage HIGH/LOW	Approximately supply voltage −1.8 V / 0 V
Response time	≤0.5 ms; signal transit time with resistive load
Switching frequency	1,000 Hz at 1:1 light/dark ratio
Attenuation along light beam	≤20%, manufacturer specification
Power supply	10–30 V DC; short-circuit-protected network, maximum 8 A
Ripple	±10%; remain within supply tolerances
Current consumption	30 mA without load
Connection	M8 four-pin male connector
Pin assignment	CD-066: 1 BN=L+; 2 WH=not connected; 3 BU=M; 4 BK=Q
Circuit protection	Supply and input/output reverse-polarity protection; output overcurrent and short-circuit protection
Housing material	ABS
Optics material	PMMA
IP rating	IP67
Operating temperature	−25 to +55 °C
Storage temperature	−40 to +70 °C
Mounting	M3 threaded holes; maximum tightening torque 0.6 Nm; 25.4 mm spacing
Indicator	Orange LED: switching output active
MTTFD	1,028.4 years
DCavg	0%
Physical Weight (kg)	0.01

Parameter

Value

Functional principle

Retro-reflective sensing with coaxial autocollimation optics; no reflector minimum distance

Special application

Detecting transparent objects; special-device version

Sensing range

0–1.7 m with PL80A reflector

Maximum sensing range

0–3 m with PL80A reflector

Additional reflector ranges

Sensing / typical maximum: P250F 0–1.9 / 0–2.5 m; PL20F 0–1.0 / 0–1.3 m; PL10F 0–0.6 / 0–0.7 m

Light source

650 nm visible red LED

Average LED service life

100,000 h at +25 °C

Light spot size

Ø70 mm at 2 m

Adjustment

270° sensitivity potentiometer

Switching output

Single PNP output; maximum current ≤100 mA

Switching mode

Light/dark switching selected by rotary switch; L=light, D=dark

PNP signal voltage HIGH/LOW

Approximately supply voltage −1.8 V / 0 V

Response time

≤0.5 ms; signal transit time with resistive load

Switching frequency

1,000 Hz at 1:1 light/dark ratio

Attenuation along light beam

≤20%, manufacturer specification

Power supply

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

Ripple

±10%; remain within supply tolerances

Current consumption

30 mA without load

Connection

M8 four-pin male connector

Pin assignment

CD-066: 1 BN=L+; 2 WH=not connected; 3 BU=M; 4 BK=Q

Circuit protection

Supply and input/output reverse-polarity protection; output overcurrent and short-circuit protection

Housing material

ABS

Optics material

PMMA

IP rating

IP67

Operating temperature

−25 to +55 °C

Storage temperature

−40 to +70 °C

Mounting

M3 threaded holes; maximum tightening torque 0.6 Nm; 25.4 mm spacing

Indicator

Orange LED: switching output active

MTTFD

1,028.4 years

DCavg

Physical Weight (kg)

0.01

Industrial Applications

1. Counting transparent containers on a filling line

A filling line can place the sensor and reflector across the path of separated transparent containers. The manufacturer identifies transparent-object detection, and the sensitivity potentiometer establishes the optical setting for the actual container and reflector. The PNP output provides passage events to an external counter, with 1,000 Hz switching and ≤0.5 ms response assessed alongside container spacing and input sampling.

Problem Solved

A commissioned transparent-target optical condition gives external counting logic a container-passage event, helping track separated clear containers at the selected observation point.

Transparent containers PNP output 1,000 Hz

2. Monitoring transparent film continuity at a feed station

A transparent-film feeder can place the reflector return path through its normal material position. External monitoring observes the PNP state when the film is present and when a break or exhausted roll leaves the path open. The 270° sensitivity adjustment and light/dark rotary switch establish the installed condition for the actual film, reflector, distance and optical attenuation.

Problem Solved

A sustained change in the commissioned film-presence condition gives external feed monitoring a continuity event, helping identify a break or exhausted transparent material supply.

Film continuity 270° adjustment Light/dark selection

3. Checking that a clear container leaves a transfer nest

A transfer nest can direct the reflector return beam through the expected position of a clear container. External sequence logic checks the commissioned optical state before transfer and again after removal, flagging a container that remains in place. Coaxial optics remove the reflector minimum-distance requirement, while reflector selection and target attenuation establish the useful installed geometry.

Problem Solved

A container-presence check after the transfer command gives external sequencing evidence of a retained clear container, helping identify a transfer cycle that did not clear the nest.

Transfer confirmation Coaxial optics Retained container