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Color Mark Photoelectric Sensor


Color Mark Detection on Any Type of Packaging. Narrow Beam and Large Lens for Stable Detection of Workpieces Tilted at Various Angles.

Sensing method Diffuse-reflective (mark detection)
Output Push-pull NPN
Model E3S-DCP21-IL2 E3S-DCP21-IL3 E3S-DCN21
Sensing distance 10 ±3 mm (White paper 10 ×10 mm)
Spot size (reference value) 1 × 4 mm
Light source (wavelength) Red LED (635 nm), Green LED (525 nm), Blue LED (465 nm)
Power supply voltage 10 to 30 VDC±10% (Ripple (p-p) 10% max.)
Power consumption 960 mW max.
(Reference: Power supply voltage 24 V, Current consumption 40 mA max.)
Control output Load current: 100 mA max. (30 VDC max.)
Indications Operation indicator (orange), RUN indicator (green),
7-segment indicator (white), Key lock indicator (white),
Timer indicator (white), 1-point teaching mode indicator (white)
Operation mode High when mark is detected. ON when mark is detected.
Protection circuits Power supply reverse polarity protection,
output short-circuit protection and output incorrect connection protection
Response time Operate or reset: 50 μs max. for each (2-point teaching mode)
Operate or reset: 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
Degree of protection IEC 60529 IP67
Connection method M12, 4-pin connector
(packed state/
Sensor only)
Model with
Approx. 370 g/approx. 320 g
Materials Case Diecast zinc (nickel-plated brass)
Lens Methacrylic resin (PMMA)
Indicators ABS
Buttons Elastomers
Connector Diecast zinc (nickel-plated brass)
Main IO-Link functions • Operation mode switching between NO and NC
• Timer function of the control output and timer time selecting function (Select a function from disabled, ON delay, OFF delay, one-shot or ON/OFF delay.) (Select a timer time of 1-5000 ms.)
• Selecting function of ON delay timer time for instability (0 (disabled)-1000 ms)
• Monitor output function (PD output indicating a relative detection quantity)
• Energizing time read-out function (unit: h)
• Initialize the settings function “Restore the factory settings”
Version 1.1 ---
Baud rate E3S-DCP21-IL3: COM3 (230.4 kbps),
E3S-DCP21-IL2: COM2 (38.4 kbps)
Data length PD size: 8 bytes, OD size: 1 byte (M-sequence type: TYPE_2_2) ---
cycle time
E3S-DCP21-IL3 (COM3): 1.5 ms,
E3S-DCP21-IL2 (COM2): 4.8 ms
Accessories Instruction manual

* Standard Sensing Object for the Mark Sensor

Color Munsell code
White N9.5
Red 4R 4.5/12.0
Yellow-red 4YR 6.0/11.5
Yellow 5Y 8.5/11.0
Yellow-green 3GY 6.5/10.0
Green 3G 6.5/9.0
Blue-green 5BG 4.5/10.0
Blue 3PB 5.0/10.0
Blue-purple 9PB 5.0/10.0
Purple 7P 5.0/10.0
Red-purple 6RP 4.5/12.5
(Black) (N2.0)