Configured for long-range optical beam break detection in automated material handling systems, the Omron E3Z-LT81 (E3Z-L Photoelectric Sensor) provides direct physical/electrical execution. This through-beam assembly utilizes a focused laser diode emitter and matching receiver element to evaluate optical path continuity across distances reaching 60 m.

Model Designation & Nomenclature Breakdown

• E3Z: Identifies the compact photoelectric sensor product platform from Omron.
• L: Designates laser diode emitter technology providing narrow beam spot profiles.
• T: Indicates through-beam sensing methodology requiring separate emitter and receiver units.
• 8: Specifies PNP open collector output switching architecture.
• 1: Represents pre-wired cable connection configuration.

Operational Parameters & Specifications

Fieldbus Controller Integration & Response Synchronization

The E3Z-LT81 interfaces directly with discrete I/O modules on Profinet and EtherNet/IP deterministic networks through PNP open collector switching outputs. High switching responsiveness ensures rapid signal transition feeds into local controller input cards, preventing signal dropouts during high-density I/O density scaling and maintaining precise execution within synchronized control loops.

Supply Package Manifest

• 1 x Omron E3Z-LT81 Emitter Unit
• 1 x Omron E3Z-LT81 Receiver Unit
• 2 x Standard Mounting Brackets with Hardware
• 1 x Instruction Manual Set

Physical Mounting & Optical Alignment Instructions

Optical Axis Alignment

Position the emitter and receiver directly opposing each other within the maximum 60 m sensing span. Fine-tune the horizontal and vertical inclination until the receiver optical indicator confirms stable laser beam reception.

Cable Termination Protocols

Connect the pre-wired leads to a regulated 12 to 24 VDC power source. Ensure control output leads are properly landed to PNP-compatible PLC input terminals, maintaining tight strain relief around cable entry points.

Ambient Light and Enclosure Protection

Mount sensing heads away from direct high-intensity ambient light reflection sources. Verify that all bracket mounting hardware is torqued securely to prevent axial misalignment caused by mechanical vibration.

Technical Support FAQs

• What light source technology is incorporated inside the E3Z-LT81 emitter?

  The emitter utilizes a 655 nm red laser diode (Class 1 JIS/IEC, Class 2 FDA) generating a 5-mm spot diameter at 3 m.

• What is the maximum rated sensing distance between emitter and receiver?

  The through-beam sensing configuration maintains an effective operational sensing distance up to 60 m.

• What control output switching logic does this sensor model feature?

  The E3Z-LT81 features a PNP open collector control output supporting a maximum load current of 100 mA at 26.4 VDC.

• What is the total current consumption for the complete sensing pair?

  Total current draw is 35 mA maximum, with the emitter consuming 15 mA and the receiver consuming 20 mA.

• What supply voltage range is required for standard operational stability?

  The hardware operates within a 12 to 24 VDC voltage window with permissible peak-to-peak voltage ripple up to 10%.

• How does the sensor handle interface switching on fast automation lines?

  The PNP open collector output transitions rapidly to feed discrete signals directly into controller I/O modules without lag.

• What is the pre-wired connection format on this specific part number?

  The number 1 suffix designates an integrated pre-wired multi-conductor cable assembly rather than a quick-disconnect connector.

• Is the laser optical beam safe for standard industrial working environments?

  Yes, the light source complies with Class 1 (JIS/IEC) and Class 2 (FDA) laser standards for standard industrial deployment.