Omron F3SJ-A1770N55 Safety Light Curtain
Omron F3SJ-A1770N55 is a Safety Light Curtain designed for 55 mm leg and body protection across a 1770 mm protective height. Its sensing field contains 36 infrared beams arranged with a 50 mm beam gap to detect opaque objects entering a tall guarded machine opening. The sensing range extends from 0.2 to 7 m, while the unit operates from a 24 VDC supply. An M12 8-pin connector and NPN transistor outputs provide the electrical interface. Within the F3SJ Series, the F3SJ-A1770N55 provides extended body-level protection. For tall machine access zones, explore 55 mm body protection light curtains available through Omron industrial safety products.
| Brand | Omron |
| Product | Safety Light Curtain |
| Model Number | F3SJ-A1770N55 |
Omron F3SJ-A1770N55 Safety Light Curtain - Technical Specifications
| Specification | Value |
|---|---|
| Application | Leg/body protection |
| Object Resolution | Opaque objects |
| Detection Capability | 55 mm dia. |
| Beam Gap | 50 mm |
| Number Of Beams | 36 Beams |
| Protective Height | 1770 mm |
| Lens Size | 5 mm |
| Operating Range | 0.2 to 7 m |
| Connection Method | M12 Connector 8-pin |
| Light Source | Infrared LED (870 nm) |
| Startup Waiting Time | 2 s max. |
| Power Supply Voltage | 24 VDC ±20% (ripple p-p10% max.) |
| Current Consumption | Emitter: 76 mA max.; Receiver: 68 mA max. |
| Safety Outputs Ossd | Two NPN transistor outputs Load current: 300 mA max. Residual voltage: 2 V max. Capacitive load: 2.2 µF Leakage current: 2 mA max. |
| Auxiliary Output Non Safety Output | One NPN transistor output Load current: 300 mA max. Residual voltage: 2 V max. Leakage current: 1 mA max. |
| Protective Circuit | Output short-circuit protection, and power supply reverse polarity protection |
| Insulation Resistance | 20 M? min. (at 500 VDC) |
| Ambient Temperature | Operating: -10 to 55°C (no icing), Storage: -30 to 70°C |
| Ambient Humidity | Operating: 35% to 85% (no condensation), Storage: 35% to 95% |
| Degree Of Protection | IP65 (IEC 60529) |
| Materials | Case: Aluminum, Zinc diecast Front window: PMMA resin (acrylic) Caps: ABS resin Cable: Oil-resistant PVC |
The Omron F3SJ-A1770N55 Safety Light Curtain provides 55 mm leg and body detection across a 1770 mm protective height. Its sensing field contains 36 infrared beams arranged with a 50 mm beam gap to detect opaque objects entering the guarded machine opening. The operating range extends from 0.2 to 7 m, while the unit operates from a 24 VDC ±20% supply. An M12 8-pin connector provides the electrical interface. Two NPN transistor outputs support a maximum load current of 300 mA each. Output short-circuit and power-supply reverse-polarity protection are specified, while the enclosure carries an IP65 rating.
For selection, the F3SJ-A1770N55 should be evaluated by its 55 mm detection capability, 1770 mm protective height, 50 mm beam spacing, NPN output configuration, and available sensing distance. These specifications define a tall leg and body protection field rather than fine hand or finger detection. A related model can extend vertical coverage while retaining the same 50 mm beam spacing and protection category but changing the electrical output configuration. For a 1920 mm leg and body configuration using 39 beams and PNP outputs, see Omron F3SJ-A1920P55.
