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Omron E3S-DCP21-IL2 — front face of the RGB colour-mark sensor showing the 1 x 4 mm optical spot window and the red / green / blue LED windows behind the lens

Omron E3S-DCP21-IL2 — RGB Mark Sensor, IO-Link

SKU: E3S-DCP21-IL2

USD 155.00

RGB colour-mark sensor, 10 mm focal, IO-Link COM2, push-pull, M12 connector, IP67. In stock.

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Product Overview

The Omron E3S-DCP21-IL2 is an E3S-DC colour-mark photoelectric sensor with RGB LED and IO-Link COM2 It is manufactured by Omron Corporation. Hengyixin Automation ships this sensor from our Xiamen warehouse with a 30-day DOA return window and a datasheet PDF included in the box. The diffuse-reflective head focuses a 1 x 4 mm spot at 10 plus or minus 3 mm. Three LEDs at 635, 525 and 465 nm auto-select the channel with the highest contrast between mark and background, so one teach handles red, green, blue, silver, white and black registration marks. The IL3 variant runs COM3 at 230.4 kbps for faster teach cycles. Key specs: Sensing Method Diffuse-reflective (colour-mark detection), 10 plus or minus 3 mm focal; Spot Size 1 x 4 mm; Light Source RGB LED - Red 635 nm, Green 525 nm, Blue 465 nm; Supply Voltage 10 to 30 VDC plus or minus 10%, ripple 10% max; 40 mA max; Control Output Push-pull, 100 mA max load at 30 VDC max; IO-Link Version 1.1, COM2 at 38.4 kbps, 4.8 ms min cycle; Response Time 50 us operate / reset (2-point teach); 150 us (1-point teach); Protection.

Key Features

  • Diffuse-reflective colour-mark sensor, 10 mm plus/minus 3 mm focal distance, 1 x 4 mm spot
  • RGB LED at 635 / 525 / 465 nm auto-selects the highest-contrast channel between mark and substrate
  • Push-pull output 100 mA, plus IO-Link COM2 at 38.4 kbps on the same M12 4-pin connector
  • 50 us response in 2-point teaching, 150 us in 1-point teaching, IP67 diecast-zinc housing
  • SKU: E3S-DCP21-IL2
  • Series: E3S-DC colour-mark photoelectric sensor
  • Voltage: 10 TO 30 VDC

Best-Fit Applications

  • Tube-fill line mark detection where the IO-Link signal replaces a discrete mark-error output to an NJ501 CPU
  • Label presence check on a label applicator where one teach handles multiple SKUs without manual LED selection
  • Register-mark detection on a vertical form-fill-seal packaging machine where the RGB channel auto-switches between silver and black printed film

Buying Checklist

  • Choose the E3S-DCP21-IL2 when the line needs a colour-mark sensor with IO-Link COM2 and the cabinet already runs COM2 IO-Link masters.
  • Choose the E3S-DCP21-IL3 instead when the cycle needs IO-Link COM3 at 230.4 kbps for faster teach under 5 ms.
  • Choose the E3S-DCN21 instead when the cabinet has no IO-Link master and only needs a NPN open-collector output.

Technical Specifications

Manufacturer Omron Corporation (Japan)
Series E3S-DC colour-mark photoelectric sensor
Model / SKU E3S-DCP21-IL2
Sensing Method Diffuse-reflective (colour-mark detection), 10 plus or minus 3 mm focal
Spot Size 1 x 4 mm
Light Source RGB LED - Red 635 nm, Green 525 nm, Blue 465 nm
Supply Voltage 10 to 30 VDC plus or minus 10%, ripple 10% max; 40 mA max
Control Output Push-pull, 100 mA max load at 30 VDC max
IO-Link Version 1.1, COM2 at 38.4 kbps, 4.8 ms min cycle
Response Time 50 us operate / reset (2-point teach); 150 us (1-point teach)
Protection / Connection IP67 per IEC 60529, diecast zinc; M12 4-pin connector
Dimensions / Weight 80.4 x 32 x 25 mm sensor only; 320 g sensor / 370 g packaged

FAQ for E3S-DCP21-IL2

What does the -IL2 suffix on E3S-DCP21-IL2 mean?
IL2 marks IO-Link COM2 at 38.4 kbps. The IL3 variant runs COM3 at 230.4 kbps for faster teach cycles. The IO-Link signal runs on the same M12 4-pin connector as the standard push-pull output - no extra cable or connector is needed for the diagnostics channel.
What is the sensing distance of E3S-DCP21-IL2?
10 plus or minus 3 mm focal distance with the standard white reference 10 x 10 mm paper. This is a short-range colour-mark sensor, not a long-range diffuse-reflective. For long-range diffuse-reflective, use the E3Z-D (1 m) or E3S-CD families instead.
Does the E3S-DCP21-IL2 detect transparent film marks?
Yes - the RGB LED auto-selects the channel with the highest contrast between mark and substrate. For very low-contrast marks on clear film, fine-tune the teach mode and threshold via IO-Link. The IO-Link PD size of 8 bytes lets the PLC log RGB values for trend analysis on colour drift.
What is the response time of E3S-DCP21-IL2?
50 us operate or reset in 2-point teaching mode and 150 us in 1-point teaching mode. That is among the fastest mark sensors in the Omron lineup. The minimum IO-Link cycle time is 4.8 ms on COM2 or 1.5 ms on the COM3 IL3 variant.

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