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Specifications
Mfr. Part #:
BW40-20
Key Attributes
Model Number:
BW40-20
Product Description
Product Overview
The D-44 BW Series Area Sensor is a high-performance through-beam type 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 minimizes unsensing areas, making it ideal for precise detection. High-brightness LEDs on both the emitter and receiver ensure easy recognition from various angles and distances. This sensor includes advanced functions like self-diagnosis, mutual interference prevention, and external diagnosis, all housed within a robust IP65 protected structure.
Product Attributes
- Brand: Autonics (implied by page numbering and context)
- Product Series: BW Series
- Protection Structure: IP65 (IEC standard)
- Material: Case: Aluminum, Front cover, sensing part: Acrylic
- Approvals: Not explicitly stated beyond IP65
Technical Specifications
| Model | BW20- (P) | BW40- (P) | Unit |
|---|---|---|---|
| Sensing method | Through-beam type | ||
| Sensing distance | 0.1 to 7 | m | |
| Min. sensing target | Opaque material of min. 30mm | Opaque material of min. 50mm | |
| Optical axis pitch | 20 | 40 | mm |
| Number of optical axis | 8 to 48 | 4 to 24 | |
| Sensing height | 140 to 940 | 120 to 920 | mm |
| Response time | Max. 10 | ms | |
| Power supply | 12-24VDC 10% (ripple P-P: max. 10%) | ||
| Current consumption | Emitter: max. 120mA, Receiver: max. 120mA | ||
| Operation mode | Light ON fixed | ||
| Control output | NPN or PNP open collector output Load voltage: max. 30VDC Load current: max. 100mA Residual voltage - NPN: max. 1VDC, PNP: max. 2.5VDC | ||
| Protection circuit | Reverse polarity protection circuit, output short over current protection circuit | ||
| Light source | Infrared LED (850nm modulated) | ||
| Insulation resistance | Over 20M (at 500VDC megger) | ||
| Synchronization type | Timing method by synchronous line | ||
| Self-diagnosis | Emitter/Receiver monitoring, direct light monitoring, over current monitoring | ||
| Interference protection | Interference protection by master/slave function | ||
| Noise immunity | 240V the square wave noise (pulse width 1) by the noise simulator | ||
| Dielectric strength | 1,000VAC 50/60Hz for 1 min | ||
| Vibration | 1.5mm amplitude at frequency of 10 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours | ||
| Shock | 500m/s (approx. 50G) in each X, Y, Z direction for 3 times | ||
| Ambient illumination | Ambient light: max. 100,000lx (receiver illumination) | ||
| Ambient temperature | -10 to 55, storage: -20 to 60 | ||
| Ambient humidity | 35 to 85%RH, storage: 35 to 85%RH | ||
| Cable | 5mm, 4-wire, 300mm, M12 connector | ||
| Accessory | Bracket A: 4, Bracket B: 4, Bolt : 8 | ||
| Weight (BW20-48 / BW40-24) | Approx. 2.1kg (approx. 1.4kg for unit only) | kg | |
Ordering Information
| Item | Value | Description |
|---|---|---|
| Optical axis pitch | 20 | 20mm |
| Optical axis pitch | 40 | 40mm |
| Number of optical axis | 04 to 48 | (Range varies by model) |
| Control output | No mark | NPN open collector output |
| Control output | P | PNP open collector output |
| Model Prefix | BW | Cross-beam area sensor |
| Example Model | BW2008P | (BW + Optical axis pitch + Number of optical axis + Control output type) |
Features
- Long sensing distance up to 7m.
- 22 types of products available with varying optical axis pitches (20/40mm) and sensing heights (120 to 940mm).
- Minimizes unsensing area with a 20mm optical axis pitch (BW20- models).
- 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
Refer to diagrams for Emitter and Receiver dimensions, including optical axis, operation indicator, and mounting points. Specific dimensions (L, A, B) are provided for various models.
Wiring and Connections
Details provided for NPN and PNP open collector outputs, including load voltage, load current, and residual voltage. Wiring diagrams illustrate connections for Emitter and Receiver, including power supply, SYNC, 0V, and TEST/OUT. Operation indicators (LEDs) and their corresponding states are described.
Functions
- Self-diagnosis: Monitors emitter/receiver, direct light, and over current. Control output turns OFF and indicator displays error status upon detection.
- Interference protection: Master/Slave function prevents sensing errors when multiple sensors are used in parallel.
- External diagnosis: Stopping emitter output via TEST input (0V) allows external systems to check sensor operation.
Installation and Usage
- Installation: Recommended to install with emitter and receiver in the same up/down direction. Avoid installation where light may reflect from walls or flat surfaces. Ensure a minimum interval distance of 0.5m between sensors.
- Interference Prevention: For installations with more than 2 sets, use opposite transmission directions, baffles, or ensure sufficient installation distance.
- Proper Usage: Follow instructions, use insulated and limited voltage/current power supplies (Class 2, SELV). Allow 1 second after power supply before use. For switching mode power supplies, ground F.G. and connect a condenser. Use diodes or varistors for inductive loads. Keep wiring short and away from high voltage lines. Suitable for indoor use (within rated conditions), altitude max. 2,000m, pollution degree 2, installation category II.
Troubleshooting
| Cause | Troubleshooting |
|---|---|
| Not operating | Supply rated power. Check cable connections. Use within rated sensing distance. |
| Not operating sometimes | Clean sensor cover. Check connector connections. |
| Control output is OFF even though there is no target object | Ensure use within rated sensing distance. Remove obstacles blocking the light path. Move away from strong electric wave or noise generators. |
| LED displays for break of light emitting element | Break of light emitting element. |
| LED displays for failure of emitter | Break of light emitting circuit. |
| LED displays for failure of receiver | Break of light receiving element. |
| LED displays for synchronous line | Synchronous line incorrect connection or disconnection. Break of synchronous circuit. |
| LED displays for control output over current | Control output line is shorted. Overload. Check rated load capacity. |
| LED displays for emitter malfunction | Emitter malfunction. Check emitter display LED. |
2411220420_Autonics-BW40-20_C17665268.pdf
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