Technical Overview
The Omron E3FA-LN11 is a straight-type background-suppression photoelectric sensor with NPN output and 2 m pre-wired cable. Omron specifies a 100 mm sensing distance on a 300 × 300 mm white target, a 624 nm red LED, a one-turn sensitivity adjuster, selectable Light-ON/Dark-ON operation, 0.5 ms response and IP67/IP69K protection. Current supply status is not established by the consulted manufacturer material and is recorded as Unknown.
A background-suppression sensor with 100 mm red-light range and NPN output.
Key Features
- Exact model E3FA-LN11 2M, straight-type plastic-housing E3FA sensor
- Background-suppression sensing, 100 mm on a 300 × 300 mm white target
- NPN open-collector output; Light-ON/Dark-ON selectable by wiring
- Red LED, 624 nm; reference spot 40 × 45 mm at 100 mm
- 10–30 VDC; 25 mA max. current consumption
- 0.5 ms response; one-turn sensitivity adjuster
- IP67 IEC and IP69K protection ratings
- 2 m pre-wired cable; approx. 50 g sensor-only weight
- Current manufacturer supply status is not established; recorded as Unknown
Suppress background influence for more reliable object detection against a contrasting surface.
Technical Specification Matrix
| Parameter | Value |
| Sensor type | Background-suppression photoelectric sensor |
| Sensing distance | 100 mm (300 × 300 mm white paper target) |
| Reference spot diameter | 40 × 45 mm at 100 mm sensing distance |
| Differential travel | 20% max. |
| Light source | Red LED, 624 nm |
| Output | NPN open collector; Light-ON/Dark-ON selectable by wiring |
| Power supply | 10–30 VDC; ripple 10% p-p max. |
| Current consumption | 25 mA max. |
| Control output | 30 VDC max. load supply; 100 mA max. load current; residual voltage 3 V max. |
| Response time | 0.5 ms |
| Sensitivity adjustment | One-turn adjuster |
| Operating / storage temperature | Pre-wired model: −25 to +55 °C / −40 to +70 °C, no icing or condensation |
| Ambient humidity | Operating 35–85% RH; storage 35–95% RH, no condensation |
| Protection | IP67 (IEC); IP69K (DIN 40050-9) |
| Connection | Pre-wired cable, 2 m |
| Physical Weight (kg) | Approx. 0.050 kg, sensor only |
| Dimensions L x W x H (cm) | Not stated numerically in consulted specifications |
| Supply status | Unknown; current manufacturer lifecycle state not established |
Suggested applications
Engineering suggestions require suitability checks for your installation.
1. Conveyor detection against a fixed background
The sensor may need to detect a target while reducing switching caused by objects behind the target.
Potential use
The 100 mm background-suppression mode can be evaluated with the actual target and background geometry; set sensitivity and verify the switching boundary.
100 mm
BGS
NPN
0.5 ms
2. Part presence at a machine station
A fixture may need to confirm a workpiece without responding to nearby mounting surfaces.
Potential use
Use the one-turn sensitivity adjustment and selectable output logic after checking target color, distance and mechanical alignment.
Red LED
IP67/IP69K
2 m cable
Background suppression