Miniature photoelectric sensorsW4

Type:WTB4FT-21A11120ZZZ

Part no.:
1129445

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Features

Functional principle

Photoelectric proximity sensor

Functional principle detail

Background suppression, DoubleLine

Sensing range
Sensing range min.	7 mm
Sensing range max.	120 mm
Adjustable switching threshold for background suppression	15 mm … 120 mm
Reference object	Object with 90% remission factor (complies with standard white according to DIN 5033)
Minimum distance between set sensing range and background (black 6% / white 90%)	1 mm, at a distance of 50 mm
Recommended sensing range for the best performance	30 mm … 80 mm

Emitted beam
Light source	PinPoint LED
Type of light	Visible red light
Shape of light spot	Line-shaped, two parallel line-shaped light spots
Light spot size (distance)	1.2 mm x 17 mm (50 mm)
Maximum dispersion of the emitted beam around the standardized transmission axis (squint angle)	< +/- 1.5° (at Ta = +23 °C)

Key LED figures
Normative reference	EN 62471:2008-09 \| IEC 62471:2006, modified
LED risk group marking	Free group
Wave length	635 nm
Average service life	100,000 h at T_a = +25 °C

Smallest detectable object (MDO) typ.
	1 mm (At 50 mm distance (object with 90% remission (complies with standard white according to DIN 5033)))

Adjustment
Teach-Turn adjustment	BluePilot: For setting the sensing range

Indication
LED blue	BluePilot: sensing range indicator
LED green	Operating indicator Static on: power on
LED yellow	Status of received light beam Static on: object present Static off: object not present

Special applications

Detecting flat objects, Detecting objects wrapped in film, Detecting perforated objects, Detecting uneven, shiny objects

Safety-related parameters

MTTF_D 661 years

DC_avg 0 %

T_M (mission time)
20 years (EN ISO 13849)

Rate of use: 60 %

Electrical data

Supply voltage U_B

10 V DC … 30 V DC ¹⁾

Ripple

≤ 5 V_pp

Usage category

DC-12 (According to EN 60947-5-2)

DC-13 (According to EN 60947-5-2)

Current consumption

≤ 25 mA, without load. At U_B = 24 V

Protection class

III

Digital output
Number	1
Type	PNP
Signal voltage PNP HIGH/LOW	Approx. U_B-2.5 V / 0 V
Output current I_max.	≤ 100 mA
Circuit protection outputs	Reverse polarity protected
	Overcurrent protected
	Short-circuit protected
Response time	≤ 1,000 µs ²⁾
Repeatability (response time)	240 µs
Switching frequency	500 Hz ³⁾

Pin/Wire assignment
Function of pin 4/black (BK)	Digital output, light switching, object present → output Q HIGH

¹⁾ Limit values.
²⁾ Signal transit time with resistive load in switching mode.
³⁾ With light/dark ratio 1:1.

Mechanical data

Housing

Rectangular

Design detail

Flat

Dimensions (W x H x D)

16 mm x 40.1 mm x 12.1 mm

Connection

Connector M8, 3-pin

Material
Housing	Plastic, VISTAL®
Front screen	Plastic, PMMA
Male connector	Plastic, VISTAL®

Weight

Approx. 30 g

Maximum tightening torque of the fixing screws

0.4 Nm

Ambient data

Enclosure rating	IP66 (EN 60529) IP67 (EN 60529)
Ambient operating temperature	–40 °C … +60 °C
Ambient temperature, storage	–40 °C … +75 °C
Typ. Ambient light immunity	Artificial light: ≤ 50,000 lx Sunlight: ≤ 50,000 lx
Shock resistance	30 g, 11 ms (3 positive and 3 negative shocks along X, Y, Z axes, 18 total shocks (EN60068-2-27))
Vibration resistance	10 Hz … 1,000 Hz (Amplitude 1 mm, 3 x 30 min (EN60068-2-6))
Air humidity	35 % … 95 %, Relative humidity (no condensation)
Electromagnetic compatibility (EMC)	EN 60947-5-2
Resistance to cleaning agent	ECOLAB
UL File No.	NRKH.E181493 & NRKH7.E181493

Classifications

eCl@ss 5.0	27270904
eCl@ss 5.1.4	27270904
eCl@ss 6.0	27270904
eCl@ss 6.2	27270904
eCl@ss 7.0	27270904
eCl@ss 8.0	27270904
eCl@ss 8.1	27270904
eCl@ss 9.0	27270904
eCl@ss 10.0	27270904
eCl@ss 11.0	27270904
eCl@ss 12.0	27270903
ETIM 5.0	EC002719
ETIM 6.0	EC002719
ETIM 7.0	EC002719
ETIM 8.0	EC002719
UNSPSC 16.0901	39121528