| WTB9L-3N2261 | W9 |
| SMALL PHOTOELECTRIC SENSORS |
| Ordering information |
| | Type | Part no. |
| | WTB9L-3N2261 | 1062523 |
| Other models and accessories → www.sick.com/W9 | |
| Illustration may differ | |
  | |
| ecoung四 |
| |  SIRIC | |
 | |  optical AS C |
| | |  invented by s Ck |
| Detailed technical data |
| Features |
| Functional principle | Photoelectric proximity sensor | |
| Functional principle detail | Background suppression | |
| Dimensions (W x H x D) | 12.2 mm x 49.8 mm x 23.6 mm | |
| Housing design (light emission) | Rectangular | |
| Mounting hole | M3 | |
| Sensing range max. | 25 mm ... 300 mm 1) | |
| Sensing range | 25 mm ... 300 mm 1) | |
| Type of light | Visible red light | |
| Light source | Laser 2) | |
| Light spot size (distance) | Ø 1 mm (170 mm) | |
| Wave length | 650 nm | |
| Laser class | 1 (IEC 60825-1 / CDRH 21 CFR 1040.10 & 1040.11) | |
| Adjustment | Potentiometer, 5 turns | |
| Special applications | Detecting small objects | |
| 1) | Object with 90% remission (based on standard white, DIN 5033). | | |
| 2) | Average service life: 50,000 hat TU = +25 °C. | |
| 2 PHOTOELECTRIC SENSORS | SICK Product data sheet | 2025-01-15 12:31:19 |
| | Subject to change without notice |
| | WTB9L-3N2261 | W9 |
| | SMALL PHOTOELECTRIC SENSORS |
| Mechanics/electronics |
| Supply voltage UB | 10 V DC ... 30 V DC 1) | |
| Ripple | < 5 Vpp | 2) | |
| Current consumption | 30 mA 3) | |
| Switching output | NPN 4) | |
| Output function | Complementary | |
| Switching mode | Light/dark switching | 4) | |
| Output current Imax. | ≤ 100 mA | |
| Response time | ≤ 0.5 ms 5) | |
| Switching frequency | 1,000 Hz 6) | |
| Connection type | Male connector M8, 4-pin | |
| Circuit protection | A 7)
B 8)
C 9) | |
| Protection class | III | |
| Weight | 13 g | |
| Housing material | Plastic, VISTAL® | |
| Optics material | Plastic, PMMA | |
| Enclosure rating | IP66
IP67
IP69K | |
| Ambient operating temperature | –10 °C ... +50 °C | |
| Ambient operating temperature extended | –30 °C ... +55 °C 10) 11) | |
| Ambient temperature, storage | –30 °C ... +70 °C | |
| UL File No. | NRKH.E181493 | |
1) Limit values when operated in short-circuit protected network: max. 8 A.
2) May not fall below or exceed UV tolerances.
3) Without load. |
| 4) Q = light switching. |
5) Signal transit time with resistive load.
6) With light/dark ratio 1:1. |
7) A = VS connections reverse-polarity protected.
8) B = inputs and output reverse-polarity protected.
9) C = interference suppression. |
| 10) As of Ta = 50 °C, a max. supply voltage Vmax. = 24 V and a max. load current Imax. = 50 mA is permitted. |
11) Operation below Tu –10 °C is possible if the sensor is already switched on at Tu > –10 °C, then cools down, and the supply voltage is subsequently not switched
off. Switching on below Tu –10 °C is not permissible. |
| Safety-related parameters |
| MTTFD | 423 years (EN ISO 13849-1) | 1) | |
| DCavg | 0 % | |
| 1) Mode of calculation: Parts-Count-calculation. |
| Classifications |
| ECLASS 5.0 | 27270904 | |
| ECLASS 5.1.4 | 27270904 | |
| 2025-01-15 12:31:19 | Product data sheet PHOTOELECTRIC SENSORS | SICK 3 |
| Subject to change without notice |
| WTB9L-3N2261 | W9 |
| SMALL PHOTOELECTRIC SENSORS |
| ECLASS 6.0 | 27270904 | |
| ECLASS 6.2 | 27270904 | |
| ECLASS 7.0 | 27270904 | |
| ECLASS 8.0 | 27270904 | |
| ECLASS 8.1 | 27270904 | |
| ECLASS 9.0 | 27270904 | |
| ECLASS 10.0 | 27270904 | |
| ECLASS 11.0 | 27270904 | |
| ECLASS 12.0 | 27270903 | |
| ETIM 5.0 | EC002719 | |
| ETIM 6.0 | EC002719 | |
| ETIM 7.0 | EC002719 | |
| ETIM 8.0 | EC002719 | |
| UNSPSC 16.0901 | 39121528 | |
| Adjustments |
| Potentiometer |
| ④ Q D ⑤ | |
  | ⑨ | |
| |
| ④ LED indicator yellow: Status of received light beam |
| ⑤ LED indicator green: power on |
| ⑨ Adjustment of sensing range |
| Connection diagram |
 Cd-083 |
 BN |  + (L+) |
| WH |   Q |
| BU |   - (M) | |
| BK | |
  Q | |
| | |
| 4 PHOTOELECTRIC SENSORS | SICK Product data sheet | 2025-01-15 12:31:19 |
| | Subject to change without notice |
| | WTB9L-3N2261 | W9 |
| | SMALL PHOTOELECTRIC SENSORS |
| Characteristic curve |
| % of sensing range |
| 25 | | | | 6 %/90 | % | | |
| 20 | |
| | | | ① | 18 % | /90 % | |
| 15 | |
| | | | | | | |
| 10 | |
| | | | | 90 %/9 | 0 % | |
| 5 | |
| | | | | | | |
| 0 | |
| | | 50 | 100 | 150 | 200 | 250 | 300 | |
| | | (1.97) | (3.94) | (5.91) | (7.87) | (9.84) | (11.81) |
| Sensing range in mm (inch) |
 ① Sensing range on black, 6% remission factor |
| ② Sensing range on gray, 18% remission factor |
| ③ Sensing range on white, 90% remission factor |
| Light spot size |
| Radius in mm (inch) |
| | 1 | | Dimensions in mm (inch) |
| 0.8 | Sensing range Vertical Horizontal |
| 0.6 | 50 mm
(1.97) | 1.2
(0.05) | 1.0
(0.04) | |
| 0.4 | 100 mm | 1.1 | 1.0 | |
| 0.2 | | (3.94) | (0.04) | (0.04) | |
| | 200 mm | 0.9 | 0.9 | |
| | 0 | | (7.87) | (0.04) | (0.04) | |
| | | 300 mm | 0.8 | 0.8 | |
| –0.2 | (11.81) | (0.03) | (0.03) | |
| –0.4 |
| –0.6 |
| –0.8 |
| –1 |
| | 50 | | 100 | 150 | 200 | 250 | 300 |
| | (1.97) | (3.94) | (5.91) | (7.87) | (9.84) | (11.81) |  Vertical |
| Sensing range in mm (inch) | am Horizontal |
| 2025-01-15 12:31:19 | Product data sheet PHOTOELECTRIC SENSORS |SICK 5 |
| Subject to change without notice |
| WTB9L-3N2261 | W9 |
| SMALL PHOTOELECTRIC SENSORS |
| Sensing range diagram |
| ① | 25 | | | 170 | | | |
| ② | 25 | | | | 250 | | |
| ③ | 25 | | | | | 300 | |
| | | | | 50 | 100 | 150 | 200 | | 250 | | 300 |
| | | | | (1.97) | (3.94) | (5.91) | (7.87) | (9.84) | (11.81) |
| | | | | | | Distance in mm (inch) | | | |
 Sensing range typ. max. |
| ① Sensing range on black, 6% remission factor |
| ② Sensing range on gray, 18% remission factor |
| ③ Sensing range on white, 90% remission factor |
| Dimensional drawing (Dimensions in mm (inch)) |
| WTB9L-3 |
| | 12.2 | |
| (0.48) |   | 23.6 (0.93) | |    ④ |
 |   |   3.7 (0.15) | |
| |  | |   |  ⑤ |
  | |  | |  A | | ③ |  |  | A | |
   Ai | |  | | | | |
 | |  | |   A |
| | ① |  |  | | |  |
| | ② | A |  | | | | |
| | | |  | | | |    |
| | | |  A | | | | |  A |
| | | | | | | |  |
| | | | | | | |    |
| | | | | | | | | | |
| | | | | | ⑥ | | | | ⑦ ⑧ |
| ① Center of optical axis, receiver |
| ② Center of optical axis, sender |
| ③ Mounting hole M3 (Ø 3.1 mm) |
| ④ LED indicator yellow: Status of received light beam |
| ⑤ LED indicator green: power on |
| ⑥ Connecting cable or connecting cable with connector |
| ⑦ Male connector M8, 4-pin |
| ⑧ Male connector M12, 4-pin |
| Recommended accessories |
| Other models and accessories → www.sick.com/W9 |
 |     Brief description Type Part no. | |
| Mounting brackets and plates |
 |  | | | |
| 6 PHOTOELECTRIC SENSORS | SICK Product data sheet | 2025-01-15 12:31:19 |
| | Subject to change without notice |
| | WTB9L-3N2261 | W9 |
| | SMALL PHOTOELECTRIC SENSORS |
 Brief description | |  Type | | Part no. |
| | Others | |
 | • Connection type head A: Female connector, M8, 4-pin, straight, A-coded
• Connection type head B: Flying leads
• Signal type: Sensor/actuator cable
• Cable: 5 m, 4-wire, PVC
• Description: Sensor/actuator cable, unshielded
• Application: Zones with chemicals, Uncontaminated zones | YF8U14-
050VA3XLEAX | 2095889 | | |
 | • Connection type head A: Male connector, M8, 4-pin, straight, A-coded
• Description: Unshielded
• Connection systems: Screw-type terminals
• Permitted cross-section: 0.14 mm² ... 0.5 mm² | STE-0804-G | 6037323 | | |
| 2025-01-15 12:31:19 | Product data sheet PHOTOELECTRIC SENSORS | SICK 7 |
| Subject to change without notice |
 |
| | SICK At A GlAnCe | |
| | SICK is one of the leading manufacturers of intelligent sensors and sensor solutions for industrial applica-
tions. A unique range of products and services creates the perfect basis for controlling processes securely
and efficiently, protecting individuals from accidents and preventing damage to the environment. |
We have extensive experience in a wide range of industries and understand their processes and require-
ments.With intelligent sensors,we can deliver exactly what our customers need. In application centers in
Europe,Asia and North America,system solutions are tested and optimized in accordance with customer
specifications.All this makes us a reliable supplier and development partner. |
Comprehensive services complete our offering:SICK lifetime Services provide support throughout the ma-
chine life cycle and ensure safety and productivity. |
| For us,that is“Sensor Intelligence.” |
