SICK 6052373 PNP Energetic Diffuse Photoelectric Sensor

Technical Overview

The SICK WT100-2P3439 is an energetic photoelectric proximity sensor that evaluates red light reflected from the target. It provides 0–750 mm sensing and 0–1,200 mm maximum range on 90% remission reference white, with shorter limits for gray and black targets. A 632 nm LED produces a 75 mm spot at 1,000 mm. A potentiometer adjusts the sensing range, and a separate rotary switch selects light or dark operation for the PNP output. Response is no more than 0.5 ms with resistive load, with 1,000 Hz switching at a 1:1 light/dark ratio. The rectangular ABS/PC/POM housing uses PMMA optics, M3 mounting threads, an M8 three-pin male connector and IP67 protection.

Energetic diffuse sensor with 0–750 mm reference-white sensing, local range adjustment, selectable PNP switching and M8 three-pin connection.

Key Features

Energetic reflected-light sensing from one mounting side

0–750 mm sensing; 0–1,200 mm maximum range on 90% remission reference white

632 nm visible red LED; Ø75 mm spot at 1,000 mm

Gray 18% sensing upper limit 350 mm; black 6% sensing 20–250 mm

Sensing-range potentiometer and separate light/dark rotary switch

PNP output; maximum current ≤100 mA

≤0.5 ms response with resistive load; 1,000 Hz at 1:1 light/dark ratio

10–30 V DC; 30 mA without load; M8 three-pin male connector

ABS/PC/POM housing; PMMA optics; M3 mounting threads; BEF-W100-A bracket included

IP67; −25 to +55 °C operation; −40 to +70 °C storage

Technical Specification Matrix

Parameter	Value
Functional principle	Energetic photoelectric proximity sensor
Housing design	Rectangular
Sensing range	0–750 mm on 90% remission reference white (DIN 5033)
Maximum sensing range	0–1,200 mm on 90% remission reference white (DIN 5033)
Light source	Visible red LED
Wavelength	632 nm
Light spot size	Ø75 mm at 1,000 mm
LED service life	Average 100,000 h at ambient +25 °C
Adjustment	Sensing-range potentiometer
Digital output	PNP switching output; maximum current ≤100 mA
Switching mode	Light/dark switching, selectable via rotary switch (L=light; D=dark)
Signal voltage HIGH/LOW	Supply voltage −1.8 V / approximately 0 V
Response time	≤0.5 ms signal transit time with resistive load
Switching frequency	1,000 Hz at 1:1 light/dark ratio
Power supply	10–30 V DC, limit values
Residual ripple	±10%; remain within supply tolerances
Protection class	III
Circuit protection	A: supply reverse-polarity protection; B: output reverse-polarity protection; D: outputs overcurrent and short-circuit protection
Housing material	ABS/PC/POM plastic
Optics material	PMMA plastic
Connection	M8 three-pin male connector
Mounting	M3 threaded mounting holes
IP rating	IP67
Operating temperature	−25 to +55 °C
Storage temperature	−40 to +70 °C
Orange LED indicator	Switching output active
Green LED indicator	Power on
Current consumption	30 mA without load
MTTFD	954 years
DCavg	0%
Pin assignment	1 BN=L+; 3 BU=M; 4 BK=Q (CD-045)
Items supplied	One BEF-W100-A mounting bracket
Reference-target ranges	Gray 18%: sensing upper limit 350 mm, maximum upper limit 600 mm; black 6%: 20–250 mm sensing, 20–450 mm maximum. Close-up ranges apply at maximum sensitivity.

Parameter

Value

Functional principle

Energetic photoelectric proximity sensor

Housing design

Rectangular

Sensing range

0–750 mm on 90% remission reference white (DIN 5033)

Maximum sensing range

0–1,200 mm on 90% remission reference white (DIN 5033)

Light source

Visible red LED

Wavelength

632 nm

Light spot size

Ø75 mm at 1,000 mm

LED service life

Average 100,000 h at ambient +25 °C

Adjustment

Sensing-range potentiometer

Digital output

PNP switching output; maximum current ≤100 mA

Switching mode

Light/dark switching, selectable via rotary switch (L=light; D=dark)

Signal voltage HIGH/LOW

Supply voltage −1.8 V / approximately 0 V

Response time

≤0.5 ms signal transit time with resistive load

Switching frequency

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

Power supply

10–30 V DC, limit values

Residual ripple

±10%; remain within supply tolerances

Protection class

III

Circuit protection

A: supply reverse-polarity protection; B: output reverse-polarity protection; D: outputs overcurrent and short-circuit protection

Housing material

ABS/PC/POM plastic

Optics material

PMMA plastic

Connection

M8 three-pin male connector

Mounting

M3 threaded mounting holes

IP rating

IP67

Operating temperature

−25 to +55 °C

Storage temperature

−40 to +70 °C

Orange LED indicator

Switching output active

Green LED indicator

Power on

Current consumption

30 mA without load

MTTFD

954 years

DCavg

Pin assignment

1 BN=L+; 3 BU=M; 4 BK=Q (CD-045)

Items supplied

One BEF-W100-A mounting bracket

Reference-target ranges

Gray 18%: sensing upper limit 350 mm, maximum upper limit 600 mm; black 6%: 20–250 mm sensing, 20–450 mm maximum. Close-up ranges apply at maximum sensitivity.

Industrial Applications

1. Counting separated parts on a feeder

A feeder can present separated opaque parts in front of the sensor so each part returns red light to the same mounting side. The sensing-range potentiometer establishes the working sensitivity using representative surfaces and clear gaps. External counting logic evaluates the PNP state after checking actual target reflectance, transit speed and separation against the stated response and switching-frequency limits.

Problem Solved

A part-passage reference helps external counting logic track separated components, using locally adjusted reflected-light sensing while keeping the optical components and wiring on one mounting side.

Part counting Reflected-light sensing Range adjustment

2. Checking an insert in an assembly fixture

An assembly fixture can present an expected insert at a repeatable distance facing the sensor. The potentiometer establishes a reflected-light condition using loaded and empty fixture samples, and external inspection logic samples the switching state when the assembly is seated. Setup checks insert material, background return and placement tolerance because energetic detection depends on the amount of returned light.

Problem Solved

An insert-present reference helps external inspection logic identify an empty assembly location before the next operation, using an adjusted reflected-light condition at the fixture’s presentation point.

Insert inspection Assembly fixture Adjustable range

3. Confirming a carrier at a transfer stop

A transfer stop can bring a defined carrier surface into the sensor’s working distance. The sensing-range potentiometer establishes the returned-light condition, and the light/dark rotary switch selects the output behavior for external transfer logic. Setup checks seated gap, actual carrier finish and background reflections, using the shorter gray and black limits where those surfaces represent the carrier.

Problem Solved

A seated-carrier reference helps external transfer logic coordinate the next release at a defined stop, using reflected light from a nearby surface and a selectable switching state.

Carrier arrival Light/dark selection Reference-target limits