Safety Light Curtain

Overview

Safety light curtain consists of a light emitter and a light receiver, can effectively detect any opaque objects exceeding the detection accuracy when entering the light curtain area. Safety light curtain adopts light curtain and controller separate design. It can be used with the controller, also can be directly connected to the PLC and safety relays, and cooperates with the machine tool control system to achieve automatic stop function in dangerous situation. ATO can offer AC 110-220V controllers according to customer needs. When the safety protection device fails, make sure that safety light curtain don't send the wrong signals to the controlled equipments.

Applications: Safety light curtain is an advanced sensor that protects the staffs around dangerous machinery and equipment. It can be apply to paper cutting machine, conveyors, assembly line, woodworking machinery, leather machinery, forging machine, punching and shearing machine, press machine, milling machine, drilling machine, welding machine, CNC, elevator, automation equipment, handling equipment and so on.
Specification:

Model	ATO-SLCQC
Light curtain mode	Through-beam
Distance of optical axis (K)	10mm	14mm	20mm	25mm	30mm	40mm
Detection accuracy	18mm	22mm	28mm	33mm	38mm	48mm
Number of beams	6, 8, 10~72	6, 8, 10~32	4, 6, 8~72	6, 8, 10~32	4, 6, 8~32	4, 6, 8~72
Protection height (H)	K*(Number of beams-1)
Detection length	30~3000mm or 30~6000mm
Size	3030J mm (J is the length of light emitter/light receiver.)
Response time	≤15ms
Anti-light interference	10000Lux (angle of incidence≥5°)
Protection class	IP65
Power supply	DC 12/24V, AC 110-220V (relay output)
Consumption current	≤200mA
Output	NPN/PNP, input current 500mA, voltage drop≤1.5V, reverse polarity, short-circuit, overload protection.
Output status	All the optical axis are receiving (show green).
Indicator light	Light emitter: Power supply indicator is red. Light receiver: Output indicator is green (through), output indicator is red (block).
Light source	Special infrared LED
Connection mode	Circular air outlet with a special connection cable, 4 core wire for light emitter, 5 core wire for light receiver.
Housing material	Shell: Aluminum alloy, end cover: ABS.
Resistant to ambient light	Natural light: receiving surface 3000Lx. Sunlight: receiving surface 10000Lx.
Ambient temperature	Operating: -10℃~40℃ (do not freeze). Storage: -25℃~55℃.
environment humidity	Operating: 35-85%RH, storage: 35~95%RH.

Dimensional drawing:
Safety light curtain dimensional drawing

Wiring diagram:

Safety light curtain output signal selection:

Tips: How to select safety light curtains?

Protection height: It is the protection height of the dangerous area. It is based on what kind of mechanical equipment the customer will use. For example, the punching machine has a large tonnage and the protection height needs to be larger.
Distance of optical axis: Refers to the distance between the transmitting tubes of safety light curtain, the shorter the distance, the smaller the test object, the higher the safety factor. Generally 10mm distance is enough to protect fingers, 20mm distance is enough to protect palm, 40mm distance is enough to protect arm.
The number of beams: Safety light curtain beam has the same protection height. When in same protection height, the greater the number, the smaller distance of optical axis, the smaller objects, the higher security. In general, the number of beams is a decisive factor for pricing the safety light curtain.
Dimensions: The commonly dimension is 30*30mm, using for punching machine and other equipments.
Output mode: There are five general output modes, such as NPN output, PNP output, relay output, digital output and analog output. It is to be set based on customer requirements.
Installation: Steel pipe support installation and side-mounted mode.

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