Configured for distance-settable background suppression and discrete optical object detection in automated material handling assemblies, the Omron E3Z-LL81 (E3Z-LL81 Photoelectric Sensor) provides direct physical/electrical execution.

Part Number Code Structure

• E3Z: Compact photoelectric sensor housing platform
• L: Laser emitter light source configuration
• L: Distance-settable sensing algorithm with background suppression (BGS)
• 8: PNP open collector discrete output logic
• 1: Pre-wired cable connection style

Technical Parameters & Characteristics

Industrial Control Integration & Deterministic Performance

The sensor integrates directly into field input channels associated with programmable logic controllers. Its high-precision optical spot ensures clean digital signal transitions into localized input modules, preserving high backplane bus communication velocity Licences and preventing I/O processing lag across Profinet / EtherNet/IP deterministic networks during high-density I/O density scaling. Integrated firmware flash compatibility within upstream master modules guarantees consistent signal timing verification.

Kit Packaging Contents

• 1 x E3Z-LL81 Photoelectric Sensor with Integrated Cable (2 m)
• 1 x Adjustment Screwdriver Tool
• 1 x Instruction Sheet

Mounting Architecture & Electrical Wiring

Physical Mounting Rules

• Secure the sensor housing to a rigid mounting bracket using M3 screws tightened to a torque not exceeding 0.5 N m.
• Position the optical face perpendicular to the target surface to prevent specular reflections from compromising background suppression accuracy.

Connection & Wiring Protocol

• Connect the brown wire to positive DC power supply voltage (+12 to 24 VDC) and the blue wire to 0 VDC power ground.
• Wire the black conductor to the PNP digital PLC input card terminal; ensure the load current remains below 100 mA continuously.

Frequently Asked Questions

• What type of discrete output configuration does this sensor feature?

  The unit features a PNP open collector switching output rated for a maximum load current of 100 mA at 26.4 VDC.

• What is the focal spot size produced by the emitter laser source?

  The red laser diode produces a concentrated 0.5 mm diameter spot at a target reference distance of 300 mm.

• How does target color affect the maximum sensing distance range?

  The sensing range extends from 20 to 300 mm for white paper targets and 20 to 160 mm for dark black targets.

• What supply voltage range is required for proper device operation?

  The sensor operates on a nominal supply voltage ranging from 12 to 24 VDC with a maximum allowable ripple of 10%.

• What safety classification applies to the internal red laser diode?

  The emitter beam is classified as a Class 1 laser under JIS and IEC standards and Class 2 under FDA regulations.

• Can background surfaces past the set distance trigger false outputs?

  The background suppression (BGS) mechanism ignores objects located beyond the distance setting threshold regardless of color.

• What is the maximum current consumption during continuous sensing?

  The internal electronics consume a maximum current of 30 mA across the operating DC power supply range.

• How should the cable conductors be assigned during field wiring setup?

  The brown conductor connects to 12-24 VDC, the blue wire connects to 0 V, and the black wire delivers the PNP load output signal.