Autonics SFL20-20 Safety Light Curtain
The Autonics SFL20-20 Safety Light Curtain offers Through-beam type sensing, Infrared LED(855nm) light source, Short - Long mode (setting switch) sensing distance , 303 mm protective height , 24 VDC power supply. Manufactured by Autonics under the Autonics Safety Light Curtain category, this model belongs to the Autonics SFL Series.
| Brand | Autonics |
| Product Type | Safety Light Curtain |
| Model Number | SFL20-20 |
Autonics SFL20-20 Safety Light Curtain – Technical Specifications
| Specification | Value |
|---|---|
| Sensing type | Through-beam type |
| Light source | Infrared LED(855nm) |
| Effective aperture angle(EAA) | Within ± 2.5 ° when the sensing distance is greater than 3 m for both emitter and receiver. |
| Sensing distance | Short - Long mode (setting switch) |
| Short mode | 0.2 to 8 m |
| Long mode | 0.2 to 15 m |
| Detection capability | Ø 20 mm (hand) |
| Sensing target | Opaque |
| Protective height | 303 mm |
| Number of optical axes | 20 |
| Optical axis pitch | 15mm |
| Series connection | Max. 3 SET (≤ 300 optical axes) |
| Power supply | 24 VDC |
| Current consumption | Emitter: ≤106mA, receiver: ≤181mA |
| Safety related output: OSSD output | NPN or PNP open collector Load voltage : ON - 24 VDC@(=) (except for the residual voltage), OFF - 0 VDC@(=) Load current : ≤ 300 mA Residual voltage : ≤ 2 VDC@(=)(except for voltage drop due to wiring) Load capability: ≤ 2.2 ㎌ Leakage current: ≤ 2.0 mA Wire resistance of load: ≤ 2.7 Ω |
| Auxiliary output(AUX 1/2) | NPN or PNP open collector Load voltage: ≤ 24 VDC@(=), Load current: ≤ 100 mA, Residual voltage: ≤ 2 VDC@(=) (except for voltage drop due to wiring) |
| Lamp output(LAMP 1/2) | NPN or PNP open collectorLoad voltage: ≤ 24 VDC@(=), Load current: ≤ 300 mA |
| Protection circuit | Reverse power polarity, reverse output polarity, output short-circuit over-current protection |
| Safety-related functions | Interlock (reset hold), external device monitoring (EDM), muting/override, Blanking (fixed blanking, floating blanking), reduced resolution |
| General functions | Self-test, alarm for reduction of incident light level, mutual interference prevention |
| Others functions | Change of sensing distance, switching to NPN or PNP, external test (light emission stops), auxiliary output (AUX 1, 2), lamp output (LAMP1, 2) |
| Synchronization type | Timing method by RS485 synchronous line |
| Insulation resistance | Over 20MΩ (at 500VDC megger) |
| Noise immunity | The square wave noise (pulse width: 1㎲) by the noise simulator ±240VDC@(=) |
| Dielectric strength | 1,000VAC 50/60Hz for 1 minute |
| Vibration | 10 mm double amplitude at frequency of 5 to 150 Hz, 10 sweeps ni each X, Y, Z direction |
| Shock | 250 m/s² (≈ 25 G), pulse width 6 ms in each X, Y, Z direction for 100 times |
| Environment_Ambient illumination | Sunlight: Max. 10,000lx, Incandescent lamp: Max. 3,000lx (received illumination) |
| Ambient temperature | -30 to 60 ℃, storage: -30 ~ 70 ℃ (no freezing or condensation) |
| Ambient humidity | 35 to 85 %RH, storage: 35 to 95 %RH (non-freezing or non-condensation) |
| Protection structure | IP65, IP67(IEC Standard), IP67G (JEM Standard), IP69K (DIN Standard) |
| Material | Case: Aluminum, Front cover and sensing part: Polymethyl methacrylate, End cap: polycarbonate, Power I/O cable and connector cable: polyurethane (PUR) or polyvinyl chloride (PVC), Y type connector cable: polyvinyl chloride (PVC), lamp output cable and series connector cable: polyurethane (PUR), Top / Bottom adjustable bracket and Top / Bottom bracket: SUS304, Side adjustable bracket and Side bracket: nickel plated Zn |
| International standards | UL 508, CSA C22.2 No. 14, ISO 13849-1 (PL e, Cat. 4), ISO 13849-2 (PL e, Cat. 4), UL 61496-1 (Type 4, ESPE), UL 61496-2 (Type 4, AOPDs), IEC/EN 61496-1 (Type 4, ESPE), IEC/EN 61496-2 (Type 4, AOPDs), IEC/EN 61508-1~-7 (SIL 3), IEC/EN 62061 (SIL CL 3) |
The Autonics SFL20-20 is a high-performance autonics safety light curtain designed for accurate detection and safe machine operation. Using a through-beam infrared LED system, it detects opaque targets as small as Ø20 mm, ensuring dependable safety light curtain 20 beams hand detection. Its adjustable sensing distance ranges from 0.2–8 m in short mode and up to 15 m in long mode, making it a versatile SFL20-20 light curtain 15 m solution. With a protective height of 303 mm, 20 optical axes at 15 mm pitch, and compliance with ISO 13849-1 and IEC/EN 61496, it achieves Safety Light Curtain Type 4 ESPE performance. Powered by 24 VDC, it offers OSSD safety outputs, auxiliary outputs, and lamp outputs, ensuring compatibility with modern automation systems.
In practical applications, the Autonics SFL 20-20 Safety Light Curtain safeguards presses, robotic cells, and packaging lines. Engineers rely on its light curtain blanking, muting, safety output features to ensure safe yet flexible operation, while maintenance teams value its IP65/IP67/IP69K protection, vibration resistance, and durable aluminum housing for long service life. As part of the SFL series light curtains, it delivers robust performance even under high ambient light, ensuring safety without downtime. Distributors and dealers recommend this autonics curtain sensor for industries seeking a trusted light curtain Autonics solution that meets global safety standards.
Buyers frequently reference the Autonics SFL20-20 datasheet to validate specifications, request SFL20-20 replacement part details, or compare the Autonics SFL20-20 price India. Its proven demand across automation hubs highlights its importance as a reliable Autonics safety light curtain 303 mm height. Whether specified simply as SFL20, SFL20-20, or searched as encoder Autonics safety light curtain 24 V DC, this model stands out as a dependable safety solution. Learn more at the official category page: Autonics Safety Light Curtain.
