Light Curtain 24 Optical Axes, NPN Open Collector - BW20-24

(No reviews yet) Write a Review
1,000.00 Grams
Minimum Purchase:
1 unit
Frequently bought together:



BW series from Autonics is a range of area sensors with a variety of 22 types of products. BW20-24 from Autonics is an Area Sensor with polarity NPN (open collector output). 24 numbers of optical axes & 20mm pitch optical axis, 460mm sensing height, 12 - 24 VDC.

BW20-24 from Autonics comes with the following properties:

  • Long sensing distance up to 7M.
  • 22 types of products.

(Optical axis: 20/40mm. Sensing height: 120~940mm)

  • Increased sensing stability by minimizing the non-sensing area.
  • Easy identification of the side, front and long-distance with high luminance twin operation indicators.
  • Includes self-diagnosis function, mutual interference prevention function, external diagnosis function.
  • Polished design and slim size (W 28.6 x H 22.6 x L □mm).
  • IP65 rated waterproof structure (IEC standard).


Brand Information

“Autonics” is a leading provider of automation solutions from South Korea. They develop and manufacture a wide range of automation products that are marketed worldwide. Their core products include various sensors, controllers, and motion devices, measuring equipment, laser marking systems, connection equipment, and more. Autonics products are trusted and adopted by engineers in various industrial applications and their technology is widely applied in day-to-day automation devices.

With 12 international offices in South Korea, China, Japan, India, Vietnam, Indonesia, Malaysia, Russia, Turkey, USA, Brazil, Mexico, Autonics is able to provide comprehensive automation solutions for their customers across the globe.


Data Sheet

To View Data Sheet Please Click Here
View AllClose

Warranty Information

One Year Warranty
View AllClose

Additional Information

Sensing type:
Transmitted beam type
Sensing Distance:
Sensing target:
Opaque materials of min. Ø 30mm
Optical axis patch:
20 mm
No. of optical axis:
Sensing width:
140~940 mm
Residual Voltage:
Max 1.5 V
Power supply:
12-24VDC ±10% (Ripple P-P: Max 10%)
Protection circuit:
Reverse polarity protection
Current consumption:
Emitter: max. 80mA. Receiver: max 80mA
Control output:
NPN open collector output : Load voltage: max. 30VDC. Load current: max. 100mA. Residual voltage: max. 1VDC PNP open collector output: Load current: max. 100mA. Output voltage: min (power supply-2.5) VDC
Operation mode:
Light ON only
Short circuit protection:
Response time:
Max. 12ms
Light source:
Infrared LED (850mm modulated)
Synchronization type:
Timing method by synchronous line
Ambient light monitoring. Emitter/Receiver light circuits monitoring. Output circuit monitoring
Interference protection:
Interference protection by master/slave function
Ambient temperature:
-10~+55◦C (at non-freezing status)
Storage temperature:
Ambient humidity:
35~85 RH
Storage humidity:
35~85 RH
Ambient illumination:
Sunlight: max. 10,000Ꙇx.Incandescent lamp: max. 3000Ꙇx
Noise strength:
The square wave noise by noise simulator (Voltage ±240V. period 10ms. Pulse width 1µs)
Dielectric strength:
1000VAC 50/60 Hz for 1 min
Insulation resistance:
Min 20MΩ (500VDC mega)
1.5mm amplitude at a frequency of 10~55Hz in each of X, Y, Z directions for 2 hours
500m/s2 (50G) in X, Y, Z directions for 3 times
IP65 (IEC standard)
Body: Aluminum. Front cover, Lens: Acrylic
Bracket A: 4EA. Bracket B: 4EA. Bolt: 8EA
Unit weight:
Approx. 1.4Kg (For 48 optical axis)
View AllClose