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Industrial area sensor Autonics BW20-20 with synchronization type control and noise immunity features

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Industrial area sensor Autonics BW20-20 with synchronization type control and noise immunity features

Description : Accelerometers RoHS

Mfr. Part # : BW20-20

Model Number : BW20-20

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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 sensing height range and minimizes unsensing areas with its 20mm optical axis pitch. Featuring high-brightness LEDs for easy recognition from various angles and distances, this sensor includes essential functions like self-diagnosis, mutual interference prevention, and external diagnosis. Its robust IP65 protection structure makes it suitable for demanding industrial environments.

Product Attributes

Brand: Autonics (implied by context and page numbering)
Protection Structure: IP65 (IEC standard)
Material: Case: aluminum, Front cover, sensing part: acrylic
Light Source: Infrared LED (850nm modulated)
Approvals: (specific approval not detailed)

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	Cable	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	5mm, 4-wire, 300mm, M12 connector	Approx. 1.4kg
BW40-(P)	Through-beam type	0.1 to 7m	Opaque material of min. 50mm	40mm	4 to 24	120 to 920mm	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	5mm, 4-wire, 300mm, M12 connector	Approx. 1.4kg

Ordering Information

Item	Optical axis pitch	Number of optical axis	Control output	Model Example
No mark	20mm	04 to 48	NPN open collector output	BW20-08(P)
P	40mm	4 to 48	PNP open collector output	BW20-08(P)

Example: BW20-08P

Dimensions

(Diagrams for Emitter, Receiver, Bracket A, Bracket B are present in the source but cannot be rendered as HTML tables without specific data points. The following table provides key dimensional data derived from the diagrams.)

Model	L (mm)	A (mm)	B (mm)	Optical Axis Pitch (mm)
BW20-08(P)	160	20	40	20
BW40-04(P)	160	40	40	40
BW20-12(P)	240	20	40	20
BW40-06(P)	240	40	40	40
BW20-16(P)	320	20	40	20
BW40-08(P)	320	40	40	40
BW20-20(P)	400	20	40	20
BW40-10(P)	400	40	40	40
BW20-24(P)	480	20	40	20
BW40-12(P)	480	40	40	40
BW20-28(P)	560	20	40	20
BW40-14(P)	560	40	40	40
BW20-32(P)	640	20	40	20
BW40-16(P)	640	40	40	40
BW20-36(P)	720	20	40	20
BW40-18(P)	720	40	40	40
BW20-40(P)	800	20	40	20
BW40-20(P)	800	40	40	40
BW20-44(P)	880	20	40	20
BW40-22(P)	880	40	40	40
BW20-48(P)	960	20	40	20
BW40-24(P)	960	40	40	40

Features

Long sensing distance up to 7m.
Available in 22 types with optical axis pitches of 20/40mm and sensing heights from 120 to 940mm.
Minimizes unsensing area with 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).

Functions & Operation

Operation Mode: Light ON fixed.
Self-Diagnosis: Emitter/Receiver monitoring, direct light monitoring, over current monitoring. Operation indicator displays status.
Interference Protection: Master/Slave function to prevent sensing errors when multiple sensors are used in parallel. Transmission direction should be opposite between 2 sets, and baffles should be installed.
External Diagnosis: When TEST input (black) of emitter is 0V, emitting stops, and the red LED of the emitter flashes. This allows external systems to check sensor operation.
Operation Indicator: Displays status for Power ON, MASTER operation, SLAVE operation, Test input, Break of emitter, Break of light emitting element, Break of receiver, Control output overcurrent, Synchronous line noise, Emitter failure (time out), Malfunction.

Wiring & Connections

(Details on Input/Output Circuits, Operation Indicator, and Connections are provided in the source text but are best represented visually or with specific diagrams not reproducible here. The following table summarizes connection points.)

Pin No.	Cable Color (Emitter/Receiver)	Emitter Function	Receiver Function
1	Brown	12-24VDC	12-24VDC
2	White	SYNC	SYNC
3	Blue	0V	0V
4	Black	TEST (M/S)	OUT

Connecting Cables: Sold separately (e.g., CID4-3T, CID4-5T for Emitter; CID4-3R, CID4-5R for Receiver).

Troubleshooting

Cause	Troubleshooting
Not operating	Supply the rated power. Check wiring for incorrect connection or disconnection. Use within the rated sensing distance.
Not operating sometimes	Remove dirt from the sensor cover. Check connector connections.
Control output is OFF even though there is no target object	Use within the rated sensing distance. Remove any obstacle 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 of emitter or receiver.
LED displays for control output over current	Control output line is shorted. Overload. Check rated load capacity.
LED displays for emitter malfunction	Emitter malfunction. Treat after checking the emitter display LED.

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. If using separate power supplies, power the sensor first.
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: Indoors (within rated environment conditions), Altitude max. 2,000m, Pollution degree 2, Installation category II.

2411220420_Autonics-BW20-20_C17675331.pdf

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