Part of the Omron Photoelectric Sensors series — see the full model table, lifecycle status and replacement parts.
Omron E3JK-DR11-C — 2.5 m Diffuse Sensor, Relay
SKU: E3JK-DR11-CUSD 16.00
M18 diffuse-reflective sensor with built-in amplifier, 2.5 m range, free-voltage 24-240 VAC/DC supply, SPDT relay output.
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Product Overview
The Omron E3JK-DR11-C is an M18 cylindrical diffuse-reflective photoelectric sensor with a built-in amplifier and a free-voltage AC/DC power supply. 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.
Unlike amplifier-less E3Z sensors, it carries its amplifier inside the M18 body and accepts the same 24 to 240 VAC or VDC supply that runs most control cabinets. The visible red LED indicator makes aiming simple, and the single-turn sensitivity pot on the back adjusts the 100 mm to 2.5 m sensing range in seconds.
Mount with the supplied E39-L40 bracket, set the sensitivity just past the maximum target distance, and pick the light-ON or dark-ON mode on the rear switch to match the cabinet's logic convention.
Key Features
- Free-voltage 24-240 VAC or 24-240 VDC power supply, 3 W max
- 100 mm to 2.5 m sensing range on a 300x300 mm white target
- SPDT relay output (1 NO + 1 NC + COM), 250 VAC 3 A / 30 VDC 3 A resistive
- E39-L40 right-angle mounting bracket included
- SKU: E3JK-DR11-C
- Series: E3JK-series M18 free-voltage photoelectric sensor
- Voltage: 24-240 VAC
Best-Fit Applications
- Cardboard carton trigger signal at the palletiser entry point where a relay contact feeds a counter.
- Level sensing through a clear sight glass on a small process tank filling station.
- Parts detection on a 100 VAC free-voltage cabinet that lacks a dedicated 24 VDC sensor rail.
Buying Checklist
- Choose E3JK-RR11-C for retroreflective sensing with the E39-R1 reflector at 5 m range.
- Choose E3JK-TR11-C for through-beam at 5 m when targets are irregular or very small.
- Allow for the 20 ms response in high-speed counting - for sub-millisecond, the E3Z transistor-output family is the right pick.
Technical Specifications
| Series | E3JK-series M18 free-voltage photoelectric sensor |
|---|---|
| Sensing Type | Diffuse-reflective (red LED 624 nm) |
| Sensing Distance | 100 mm to 2.5 m on white 300x300 mm target |
| Output Type | SPDT relay (1 NO + 1 NC + COM), 250 VAC 3 A / 30 VDC 3 A resistive |
| Operating Mode | Light-ON / Dark-ON switch-selectable on rear face |
| Supply Voltage | 24-240 VAC or 24-240 VDC free-voltage (+/- 10%, 50/60 Hz), 3 W max |
| Response Time | 20 ms or less |
| Connection | Pre-wired 2 m VCTF oil-resistant cable, 5 conductors |
| Indicators | Orange operation LED + green stability LED |
| Protection Rating | IP64 (IEC 60529), -25 to +55 degC |
FAQ for E3JK-DR11-C
What is the difference between E3JK-DR11-C and E3JK-DR12-C?
The DR11-C has the 2 m pre-wired VCTF cable - the DR12-C has the M12 4-pin connector. Pick DR11-C for fixed installations where the cable routes through cable duct; pick DR12-C for machine builders who need to unplug the sensor from the harness during shipment or service. Same amplifier, relay output, and range in both.
Can the E3JK-DR11-C switch a 200 VAC contactor coil directly?
Yes - the SPDT relay contacts handle contactor coils up to 3 A at 250 VAC. The relay is rated AC250 V 3 A resistive or DC30 V 3 A resistive. For motor loads above 1/8 HP, drive the contactor coil from the relay and let the contactor switch the motor. Inrush from motor start capacitors exceeds the relay rating at any continuous motor current.
What bracket and reflector go with the E3JK-DR11-C?
The E39-L40 right-angle mounting bracket ships in the box. For the diffuse-reflective DR11-C no reflector is needed - the sensor reads light back from the target itself. If you switch to a retroreflective sibling (E3JK-RR11-C), order the E39-R1 reflector separately - the sensor itself does not include one.
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