Omron E3S-DCP21-IL3 Photoelectric Sensor
Omron E3S-DCP21-IL3 is a push-pull color-mark photoelectric sensor designed for mark sensing across a working distance of 10 ±3 mm. Its optical system uses 635 nm red, 525 nm green, and 465 nm blue LEDs to evaluate variations in printed marks and surface contrast. The push-pull output transfers the switching state to compatible industrial control circuitry, while teaching provides setup for the intended mark condition. The sensor operates from 10 to 30 VDC and uses an M12 4-pin connector for detachable electrical integration. Load current is rated up to 100 mA, while response reaches 50 μs in 2-point teaching mode. Within the E3S Series, the E3S-DCP21-IL3 provides the IL3 configuration. Explore RGB mark sensing sensors across Omron Sensing Products.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-DCP21-IL3 |
Omron E3S-DCP21-IL3 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective (mark detection) |
| Sensing Distance | 10 ±3 mm (White paper 10 ×10 mm) |
| Light Source | Red LED (635 nm), Green LED (525 nm), Blue LED (465 nm) |
| Power Supply Voltage | 10 to 30 VDC (Ripple (p-p) 10% max.) |
| Output Configuration | Push-pull |
| Connection Method | M12, 4-pin connector |
| Control Output | Load current: 100 mA max. (30 VDC max.) |
| Operation Mode | High when mark is detected. |
| Response Time | Operate or reset: 50 μs max. for each (2-point teaching mode), 150 μs max. for each (1-point teaching mode) |
| Sensitivity Adjustment | Teaching method |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. |
| Ambient Temperature Range | Operating: −10 to 55°C; Storage: −25 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operation: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. (at 500 VDC) |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 55 Hz with double amplitude of 1.5 mm for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Power supply reverse polarity protection, output short-circuit protection and output incorrect connection protection |
| Degree Of Protection | IEC 60529 IP67 |
| Material | Diecast zinc (nickel-plated brass), Methacrylic resin (PMMA), ABS, Elastomers, Diecast zinc (nickel-plated brass) |
| Weight | Approx. 370 g/approx. 320 g |
The Omron E3S-DCP21-IL3 Photoelectric Sensor uses diffuse-reflective color-mark sensing across a specified working distance of 10 ±3 mm. Its RGB optical arrangement uses 635 nm red, 525 nm green, and 465 nm blue LEDs to evaluate printed marks and contrast variations. The push-pull output provides the switching signal to compatible machine-control circuitry, with the output specified High when the configured mark condition is recognized. The sensor operates from 10 to 30 VDC and uses an M12 4-pin connector for detachable wiring. Load current is specified at 100 mA maximum with a load supply voltage up to 30 VDC. Response reaches 50 μs maximum in 2-point teaching mode and 150 μs maximum in 1-point teaching mode.
For an Omron RGB color mark photoelectric sensor requiring push-pull output and teaching-based setup, the corresponding model is the E3S-DCP21-IL3. Incandescent-light resistance is specified at 3,000 lx maximum. Operating temperature extends from -10 to 55°C, while storage ranges from -25 to 70°C without icing or condensation. Power-supply reverse polarity, output short-circuit, and incorrect output connection protection are listed. Diecast zinc, PMMA, ABS, and elastomers are among the stated materials. Its specification also fits searches for an Omron 10 mm mark sensor and Omron high speed RGB sensor. For an NPN E3S mark-sensing version using the same red, green, and blue wavelengths, see E3S-DCN21.


