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Specifications
Mfr. Part #:
BW20-12
Key Attributes
Model Number:
BW20-12
Product Description
Product Overview
The D-44 BW Series Area Sensor is a through-beam type photoelectric sensor designed for long-distance detection up to 7 meters. It offers a wide range of configurations with 22 product types, featuring optical axis pitches of 20mm or 40mm and sensing heights from 120mm to 940mm. The 20mm optical axis pitch (BW20-) minimizes unsensing areas, while high-brightness LEDs on both the emitter and receiver ensure easy recognition from side, front, and long distances. This sensor includes essential functions such as self-diagnosis, mutual interference prevention, and external diagnosis. Its robust construction is rated IP65 for protection against dust and water ingress.
Product Attributes
- Brand: Autonics
- Product Line: BW Series
- Type: Area Sensor, Through-beam type
- Protection Structure: IP65 (IEC standard)
- Case Material: Aluminum
- Front Cover/Sensing Part Material: Acrylic
- Light Source: Infrared LED (850nm modulated)
- Approvals:
Technical Specifications
| Model | Sensing Method | Sensing Distance | Min. Sensing Target | Optical Axis Pitch | Number of Optical Axis | Sensing Height | Response Time | Power Supply | Current Consumption | Operation Mode | Control Output | Protection Circuit | Insulation Resistance | Synchronization Type | Self-Diagnosis | Interference Protection | Noise Immunity | Dielectric Strength | Vibration | Shock | Ambient Illumination | Ambient Temperature | Ambient Humidity | Weight (Unit Only) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BW20- (P) | Through-beam type | 0.1 to 7m | Opaque material of min. 30mm | 20mm | 8 to 48 | 140 to 940mm | Max. 10ms | 12-24VDC 10% (ripple P-P: max. 10%) | Emitter: max. 120mA, Receiver: max. 120mA | Light ON fixed | NPN or PNP open collector output Load voltage: max. 30VDC Load current: max. 100mA Residual voltage - NPN: max. 1VDC, PNP: max. 2.5VDC | Reverse polarity protection circuit, output short over current protection circuit | Over 20M (at 500VDC megger) | Timing method by synchronous line | Emitter/Receiver monitoring, direct light monitoring, over current monitoring | Interference protection by master/slave function | 240V the square wave noise (pulse width 1) by the noise simulator | 1,000VAC 50/60Hz for 1 min | 1.5mm amplitude at frequency of 10 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours | 500m/s (approx. 50G) in each X, Y, Z direction for 3 times | Max. 100,000lx (receiver illumination) | -10 to 55, storage: -20 to 60 | 35 to 85%RH, storage: 35 to 85%RH | Approx. 1.4kg |
| BW40- (P) | Opaque material of min. 50mm | 40mm | 4 to 24 | 120 to 920mm | ||||||||||||||||||||
| Cable: 5mm, 4-wire, 300mm, M12 connector | Accessory: Bracket A: 4, Bracket B: 4, Bolt : 8 | Weight (with packaging): BW20-48: Approx. 2.1kg, BW40-24: Approx. 2.1kg | ||||||||||||||||||||||
Ordering Information
| Item | Optical axis pitch | Number of optical axis | Control output |
|---|---|---|---|
| No mark | NPN open collector output | 04 to 48 | 20mm |
| P | PNP open collector output | 4 to 48 | 40mm |
Model Example: BW2008P (BW Cross-beam area sensor, 20mm optical axis pitch, 8 optical axes, PNP output)
Features
- Long sensing distance up to 7m.
- 22 types of products available (optical axis: 20/40mm, sensing height: 120 to 940mm).
- Minimizes unsensing area with 20mm optical axis pitch (BW20-).
- High brightness LED on Emitter and Receiver for easy recognition from side, front, and long-distance.
- Includes self-diagnosis, mutual interference prevention, and external diagnosis functions.
- Protection structure IP65 (IEC standard).
Dimensions
(Diagrams for Emitter, Receiver, Bracket A, Bracket B are present in the source but cannot be rendered in text format. Dimensions are provided in the table below.)
| Model | L (mm) | A, B (mm) | Model | L (mm) | A, B (mm) |
|---|---|---|---|---|---|
| BW20-08(P) | 160 | 20 | BW40-04(P) | 160 | 40 |
| BW20-12(P) | 240 | BW40-06(P) | 240 | ||
| BW20-16(P) | 320 | BW40-08(P) | 320 | ||
| BW20-20(P) | 400 | BW40-10(P) | 400 | ||
| BW20-24(P) | 480 | BW40-12(P) | 480 | ||
| BW20-28(P) | 560 | BW40-14(P) | 560 | ||
| BW20-32(P) | 640 | BW40-16(P) | 640 | ||
| BW20-36(P) | 720 | BW40-18(P) | 720 | ||
| BW20-40(P) | 800 | BW40-20(P) | 800 | ||
| BW20-44(P) | 880 | BW40-22(P) | 880 | ||
| BW20-48(P) | 960 | BW40-24(P) | 960 |
Input/Output Circuit and Connections
Operation Mode: Light ON fixed
Wiring Connection:
| Pin No. | Cable Color (Emitter) | Emitter Function | Cable Color (Receiver) | Receiver Function |
|---|---|---|---|---|
| 1 | Brown | 12-24VDC | Brown | 12-24VDC |
| 2 | White | SYNC | White | SYNC |
| 3 | Blue | 0V | Blue | 0V |
| 4 | Black | TEST (M/S) | Black | OUT |
Operation Indicator
| Indicator | LED Color | Emitter | Receiver |
|---|---|---|---|
| POWER | Green | Stable light ON | - |
| Unstable | Yellow | - | Stable light ON |
| TEST (M/S) | Red | Stable light OFF | - |
Troubleshooting
| Troubleshooting | Cause | Solution |
|---|---|---|
| Not operating | Power supply | Supply the rated power. |
| Incorrect cable connection or disconnection | Check the wiring. | |
| Rated connection failure | Use it within rated sensing distance. | |
| Not operating sometimes | Pollution by dirt of sensor cover | Remove dirt by soft brush or cloth. |
| Connector connection failure | Check the assembled part of the connector. | |
| Control output is OFF even though there is no target object. | Out of rated sensing distance | Use within the rated sensing distance. |
| There is an obstacle to cut off the light emitted between emitter and receiver | Remove the obstacle. | |
| There is a strong electric wave or noise generated by motor, electric generator, high voltage line etc. | Put away the strong electric wave or noise generator. | |
| LED displays for break of light emitting element | Break of light emitting element | Contact Autonics Corp. |
| LED displays for failure of emitter | Break of light emitting circuit | LED displays for failure of emitter |
| LED displays for failure of receiver | Break of light emitting receiving element | LED displays for failure of receiver |
| LED displays for synchronous line | Synchronous line incorrect connection or disconnection | Check the wiring. |
| Break of synchronous circuit of emitter or receiver | Contact Autonics Corp. | |
| LED displays for control output over current | Control output line is shorten | Check the wiring. |
| Over load | Check the rated load capacity. | |
| LED displays for emitter malfunction | Emitter malfunction | Treat after checking the emitter display LED. |
Proper Usage
- Follow instructions in 'Proper Usage'. Otherwise, it may cause unexpected accidents.
- 12-24VDC power supply should be insulated and limited voltage/current or Class 2, SELV power supply device.
- Use the product, 1 sec after supplying power. When using separate power supply for the sensor and load, supply power to sensor first.
- When using switching mode power supply to supply the power, ground F.G. terminal and connect a condenser between 0V and F.G. terminal to remove noise.
- When connecting a DC relay or other inductive load, remove surge by using diodes or varistors.
- Wire as short as possible and keep away from high voltage lines or power lines, to prevent surge and inductive noise.
- This unit may be used in the following environments: Indoors (in the environment condition rated in 'Specifications') Altitude max. 2,000m Pollution degree 2 Installation category II
2411220420_Autonics-BW20-12_C17474862.pdf
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