WTB250-2R1541

Compact photoelectric sensors
W250-2

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Features

Functional principle	Photoelectric proximity sensor
Functional principle detail	Background suppression
Dimensions (W x H x D)	20 mm x 60 mm x 43.9 mm
Housing design (light emission)	Rectangular
Sensing range max.	150 mm … 500 mm ¹⁾
Sensing range	150 mm … 500 mm ¹⁾
Focus	Approx. 3°
Type of light	Visible red light
Light source	LED ²⁾
Light spot size (distance)	Ø 30 mm (500 mm)
Angle of dispersion	Approx. 3°
Adjustment	Potentiometer, 2 turns ³⁾ Potentiometer, 2 rotations

Mechanics/electronics

Supply voltage	24 V DC … 240 V DC ¹⁾ 24 V AC/DC … 240 V AC/DC ¹⁾
Power consumption	≤ 5 VA
Switching output	Relay, electrically isolated ²⁾
Output function	Change-over contacts
Switching mode	Light switching ²⁾
Switching current (switching voltage)	3 A (240 V AC) 3 A (30 V DC)
Response time	≤ 15 ms
Switching frequency	33 Hz ³⁾
Connection type	Cable, 5-wire, 2 m ⁴⁾
Cable material	PVC
Conductor cross section	0.76 mm²
Cable diameter	Ø 6.4 mm
Circuit protection	A ⁵⁾ C ⁶⁾
Protection class	II ⁷⁾
Overvoltage category	2
Weight	160 g
Housing material	Plastic, ABS
Optics material	Plastic, PMMA
Enclosure rating	IP67
Items supplied	BEF-W250 mounting bracket
Electromagnetic compatibility (EMC)	EN 60947-5-2 ⁸⁾
Ambient operating temperature	–25 °C … +55 °C
Ambient temperature, storage	–40 °C … +70 °C
UL File No.	NRKH2.E300503 & NRKH8.E300503

¹⁾ +- 10%.
²⁾ Provide suitable spark suppression for inductive or capacitive loads.
³⁾ With light/dark ratio 1:1.
⁴⁾ Do not bend below 0 °C.
⁵⁾ A = V_S connections reverse-polarity protected.
⁶⁾ C = interference suppression.
⁷⁾ Reference voltage: 250 V AC.
⁸⁾ The AC/DC devices comply with the Radio Safety Requirements for the industrial sector (Radio Safety Class A). They may cause radio interference if used in a residential area.

Classifications