SICK 1064614 WTB2S-2P1145 PNP Teach-in BGS Sensor

Technical Overview

The SICK WTB2S-2P1145 is a miniature photoelectric proximity sensor with background suppression and cable-based teach-in. Its sensing range is 10–90 mm on 90% remission reference white, with a maximum range of 4–110 mm. A visible 640 nm PinPoint LED produces a 4.4 mm light spot at 60 mm. The single PNP light-switching output supports up to 50 mA, with response below 0.5 ms under resistive load and a 1,000 Hz switching rating. A 2 m four-wire PVC cable provides power, output and a separate teach conductor. The IP67 ABS/PC housing uses PMMA optics and operates from −25 to +50 °C.

Miniature background-suppression sensor with 10–90 mm reference-white sensing, cable teach-in, PNP light switching, 1,000 Hz switching and a 2 m four-wire cable.

Key Features

Background-suppression photoelectric sensing in a miniature rectangular housing

10–90 mm sensing; 4–110 mm maximum range on 90% remission reference white

640 nm visible red PinPoint LED; Ø4.4 mm spot at 60 mm

Sensing adjustment through a separate teach conductor

Single PNP light-switching output; output current ≤50 mA

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

2 m four-wire PVC cable; 0.09 mm² conductors; Ø3 mm cable

10–30 V DC; 20 mA consumption without load

ABS/PC housing with PMMA optics; IP67; −25 to +50 °C operation

One W2S/G2S screw set supplied; two Ø3.2 mm mounting holes

Technical Specification Matrix

Parameter	Value
Functional principle	Photoelectric proximity sensor with background suppression
Housing design	Miniature rectangular
Sensing range	10–90 mm on 90% remission reference white, DIN 5033
Maximum sensing range	4–110 mm on 90% remission reference white, DIN 5033
Remission-dependent ranges	Manufacturer diagram: gray 18% remission 10–90 mm sensing, 5–100 mm maximum; black 6% 10–80 mm sensing, 6–90 mm maximum; ultra-black 1% 15–40 mm sensing, 8–40 mm maximum
Light source	Visible red PinPoint LED; 640 nm
Average LED service life	100,000 h at +25 °C
Light spot size	Ø4.4 mm at 60 mm
Adjustment	Cable teach-in through separate teach conductor
Manufacturer special application	Detecting small objects
Switching output	Single PNP output
Switching mode	Light switching
Output current	≤50 mA
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
Ripple	<5 Vpp; remain within supply-voltage tolerances
Current consumption	20 mA without load
Connection	2 m four-wire PVC cable; do not bend below 0 °C
Conductor cross-section	0.09 mm²
Cable diameter	Ø3 mm
Conductor functions	CD-093: BN=L+; BU=M; BK=Q; WH=Teach
Circuit protection	Supply reverse-polarity protection; output reverse-polarity protection; output overcurrent and short-circuit protection
Housing material	ABS/PC plastic
Optics material	PMMA plastic
IP rating	IP67
Mounting holes	Two Ø3.2 mm holes
Items supplied	One SCREW SET W2S/G2S
Indication	Green LED: supply voltage; yellow LED: received light
Operating temperature	−25 to +50 °C
Storage temperature	−40 to +75 °C
UL file	NRKH.E181493
MTTFD	1,547 years
DCavg	0%

Parameter

Value

Functional principle

Photoelectric proximity sensor with background suppression

Housing design

Miniature rectangular

Sensing range

10–90 mm on 90% remission reference white, DIN 5033

Maximum sensing range

4–110 mm on 90% remission reference white, DIN 5033

Remission-dependent ranges

Manufacturer diagram: gray 18% remission 10–90 mm sensing, 5–100 mm maximum; black 6% 10–80 mm sensing, 6–90 mm maximum; ultra-black 1% 15–40 mm sensing, 8–40 mm maximum

Light source

Visible red PinPoint LED; 640 nm

Average LED service life

100,000 h at +25 °C

Light spot size

Ø4.4 mm at 60 mm

Adjustment

Cable teach-in through separate teach conductor

Manufacturer special application

Detecting small objects

Switching output

Single PNP output

Switching mode

Light switching

Output current

≤50 mA

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

Ripple

<5 Vpp; remain within supply-voltage tolerances

Current consumption

20 mA without load

Connection

2 m four-wire PVC cable; do not bend below 0 °C

Conductor cross-section

0.09 mm²

Cable diameter

Ø3 mm

Conductor functions

CD-093: BN=L+; BU=M; BK=Q; WH=Teach

Circuit protection

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

Housing material

ABS/PC plastic

Optics material

PMMA plastic

IP rating

IP67

Mounting holes

Two Ø3.2 mm holes

Items supplied

One SCREW SET W2S/G2S

Indication

Green LED: supply voltage; yellow LED: received light

Operating temperature

−25 to +50 °C

Storage temperature

−40 to +75 °C

UL file

NRKH.E181493

MTTFD

1,547 years

DCavg

Industrial Applications

1. Establishing a foreground target condition during fixture setup

An assembly fixture can present its intended opaque component while setup logic operates the separate teach conductor. Cable-based adjustment establishes the background-suppression sensing condition without a local range potentiometer. During the process, external sequence logic reads the PNP light-switching state, with commissioning verifying the actual target surface and its distance from the farther fixture structure.

Problem Solved

The separate teach conductor supports setting the foreground sensing condition from the machine wiring location, helping prepare a compact fixture for its intended component presentation.

Cable teach-in Foreground setup PNP output

2. Counting separated opaque components on a narrow track

A narrow transport track can bring separated opaque components through the red sensing location with a farther surface behind them. Background suppression distinguishes foreground passages under the installed geometry. External counting electronics use output transitions and assess speed against the 1,000 Hz switching rating and response below 0.5 ms, while setup verifies target coverage, remission and separation.

Problem Solved

Foreground passages become discrete electrical count events, helping external transport logic count separated components while suppressing a suitably spaced surface behind the sensing location.

Component counting 1,000 Hz Background suppression

3. Monitoring opaque material at a replenishment threshold

A feeder can aim the sensor at opaque material occupying a defined location near its outlet. Cable teach-in adjusts the sensing condition for the presented material and background, and the single PNP signal reports local occupancy. External logic evaluates a sustained absence condition before requesting replenishment, with the working distance selected for the actual target remission.

Problem Solved

A sustained change at the monitored material threshold gives external feeder logic a replenishment reference, helping detect when the expected foreground material no longer occupies the sensing location.

Material replenishment Cable adjustment Sustained absence