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Specifications
Mfr. Part #:
BW40-20P
Key Attributes
Model Number:
BW40-20P
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 models with varying optical axis pitches (20mm or 40mm) and sensing heights (120mm to 940mm), minimizing unsensing areas. Featuring high-brightness LEDs for easy recognition from various angles and distances, this sensor includes self-diagnosis, mutual interference prevention, and external diagnosis functions. Its robust IP65 protection structure makes it suitable for demanding industrial environments.
Product Attributes
- Brand: Autonics (implied by context and page numbering)
- Product Series: BW Series
- Protection Structure: IP65 (IEC standard)
- Case Material: Aluminum
- Front Cover/Sensing Part Material: Acrylic
- Light Source: Infrared LED (850nm modulated)
- Approvals: (symbol present)
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 | Interference Protection | Noise Immunity | Dielectric Strength | Vibration | Shock | Ambient Illumination | Ambient Temperature | Ambient Humidity | Cable | Accessory | 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 | 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 | 5mm, 4-wire, 300mm, M12 connector | Bracket A: 4, Bracket B: 4, Bolt : 8 | Approx. 1.4kg |
| BW40- (P) | Opaque material of min. 50mm | 40mm | 4 to 24 | 120 to 920mm | Approx. 1.4kg | ||||||||||||||||||||
| BW20-48(P) | Approx. 2.1kg (approx. 1.4kg) | ||||||||||||||||||||||||
| BW40-24(P) | Approx. 2.1kg (approx. 1.4kg) | ||||||||||||||||||||||||
Ordering Information
| Item | Optical axis pitch | Number of optical axis | Control output |
|---|---|---|---|
| No mark | NPN open collector output | 04 to 48 | |
| P | PNP open collector output | 4 to 48 | |
| 20 | 20mm | 8 to 48 | |
| 40 | 40mm | 4 to 24 | |
| BW | Cross-beam area sensor | ||
| BW2008P | Example Model | ||
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 function, mutual interference prevention function, external diagnosis function
Dimensions
Refer to diagrams provided in the original document for Emitter, Receiver, Bracket A, and Bracket B dimensions.
Input/Output Circuit and Connections
Refer to diagrams provided in the original document for NPN open collector output, PNP open collector output, wiring connections, operation indicators, and MASTER/SLAVE connections.
Functions
- Self-diagnosis: Emitter/Receiver monitoring, direct light monitoring, over current monitoring. Control output turns OFF and operation indicator displays status upon error.
- Interference protection: Operates one sensor as MASTER and another as SLAVE to avoid sensing errors due to light interference when using multiple sensors.
- External diagnosis: When TEST input (black) of emitter is 0V, emitting stops, and the red LED of the emitter flashes, indicating sensor operation status from an external system.
Proper Usage
- Follow instructions in 'Proper Usage'.
- Use 12-24VDC power supply that is insulated and limited voltage/current or Class 2, SELV.
- Use the product 1 second after supplying power. Supply power to the sensor first if using separate power supplies for sensor and load.
- When using a switching mode power supply, 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 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.
- Suitable for indoor use (within rated environment conditions), altitude max. 2,000m, pollution degree 2, and installation category II.
troubleshooting
| Cause | Troubleshooting |
|---|---|
| Not operating |
|
| Not operating sometimes |
|
| Control output is OFF even though there is no target object |
|
| 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 emitter malfunction. Treat after checking the emitter display LED. |
| LED displays for failure of receiver | Break of light receiving element. LED displays for receiver failure. |
| 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 shorted. Check the wiring. Overload. Check the rated load capacity. |
| LED displays for emitter malfunction | Emitter malfunction. Treat after checking the emitter display LED. |
2411220420_Autonics-BW40-20P_C17217453.pdf
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