Omron E3Z-LT61 - User Manual

Need help?

Do you have a question about the Omron E3Z-LT61 and is the answer not in the manual?

Overview

Function Description
Important Technical Specifications
General
Through-beam Models (E3Z-LT series)
Retro-reflective Models with MSR function (E3Z-LR series)
Distance-settable (BGS) Models (E3Z-LL series)
Usage Features
Maintenance Features

The Omron E3Z-Laser is a compact photoelectric sensor with a built-in amplifier, designed for precision positioning and detection applications using visible LASER light. Its plastic housing makes it suitable for various industrial environments.

Function Description:

The E3Z-Laser sensor utilizes a Class 1 red laser beam (655 nm) for highly accurate detection. It offers Through-beam, Retro-reflective with MSR function, and Distance-settable (BGS) models. The optical design ensures linear propagation of laser beams, allowing for precise alignment on targeted positions. The sensor is equipped with a high-power LED for high functional reserve, ensuring reliable operation even in challenging conditions like dusty environments.

Important Technical Specifications:

General:

Power Supply Voltage: 12 to 24 VDC ±10%, ripple (p-p): 10% max.
Current Consumption: Emitter: 15 mA, Receiver: 20 mA (Through-beam); 30 mA max. (Retro-reflective and BGS).
Control Output: Load power supply voltage: 26.4 VDC max., Load current: 100 mA max., Open collector output.
Residual Output Voltage: Load current < 10 mA: 1 V max.; Load current 10-100 mA: 2 V max.
Output Mode Switching: Switch to change between light-ON and dark-ON.
Protection Circuits: Reversed power supply polarity protection, Output short-circuit protection, and Reversed output polarity protection (Through-beam and Retro-reflective). BGS models also include mutual interference prevention.
Response Time: Operate or reset: 1 ms max. (Standard response); 0.5 ms max. (High-speed response for BGS models).
Sensitivity Adjustment: One-turn adjuster (Through-beam and Retro-reflective); Five-turn endless adjuster (BGS models).
Ambient Illumination (Receiver side): Incandescent lamp: 3,000 lx max.; Sunlight: 10,000 lx max.
Ambient Temperature Range: Operating: 10 to 55°C; Storage: -25 to 70°C (with no icing or condensation).
Ambient Humidity Range: Operating: 35% to 85%; Storage: 35% to 95% (with no icing or 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, 1.5 mm double amplitude 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: IP67 (IEC 60529).
Connection Method: Pre-wired cable (standard length: 2 m) or Standard M8 Connector.
Material: Case: PBT (polybutylene terephthalate); Lens: Modified polyarylate resin (Through-beam and BGS), Methacrylic resin (Retro-reflective).

Through-beam Models (E3Z-LT series):

Sensing Distance: 60 m.
Spot Diameter (typical): 5 mm dia. at 3 m.
Standard Sensing Object: Opaque: 12 mm dia. min.
Minimum Detectable Object (typical): 6 mm dia. opaque object at 3 m.
Indicators: Operation indicator (orange), Stability indicator (green). Emitter has power indicator (orange) only.

Retro-reflective Models with MSR function (E3Z-LR series):

Sensing Distance: 0.3 to 15 m (using E39-R1 Reflector), 0.2 to 7 m (using E39-R12 or E39-R6 Reflector).
Spot Diameter (typical): 5 mm dia. at 3 m.
Standard Sensing Object: Opaque: 75 mm dia. min.
Minimum Detectable Object (typical): 0.2 mm dia. stainless-steel pin gauge at 300 mm.
Differential Travel: 5% max. of set distance.
Directional Angle: Receiver: 3 to 15°.
Indicators: Operation indicator (orange), Stability indicator (green).

Distance-settable (BGS) Models (E3Z-LL series):

Sensing Distance (White paper 100 x 100 mm): 20 to 300 mm (Standard response); 25 to 300 mm (High-speed response).
Sensing Distance (Black paper 100 x 100 mm): 20 to 160 mm (Standard response); 25 to 100 mm (High-speed response).
Spot Diameter (typical): 0.5 mm dia. at 300 mm.
Minimum Detectable Object (typical): 0.2 mm dia. stainless-steel pin gauge at 300 mm.
Black/White Error: 5% at 160 mm (Standard response); 5% at 100 mm (High-speed response).
Indicators: Operation indicator (orange), Stability indicator (green).

Usage Features:

Precision Positioning: Visible LASER light enables precise positioning and detection of small objects.
Enhanced Beam Visibility: The optical design maximizes linear propagation of laser beams, making optical axis adjustment easier. Class 1 red laser beams can be precisely aligned.
Reliable Detection: High functional reserve (60 m for Through-beam) ensures reliable operation even in dusty environments.
Small Spot for Small Objects: A small spot diameter (5 mm at 3 m for Through-beam and Retro-reflective, 0.5 mm at 300 mm for BGS) allows detection of small workpieces and minor level differences at long distances.
Longest Leeway: Retro-reflective models offer a 15 m sensing distance with an E39-R1S Reflector, providing the longest leeway in the industry.
Low Black/White Error: BGS models feature a black/white error as low as 5%, improving stability for applications with mixed colors.
Advanced Optical Technology: Laser beam directional deviation is suppressed, and spot diameters are customizable through high-precision alignment technology.
Fast Response Time: High-speed response models (0.5 ms) are available for fast-moving objects.
Easy Mounting: Can be easily mounted to aluminum frame rails of conveyors and adjusted for left-to-right alignment using specific mounting brackets.

Maintenance Features:

Cleaning: Never use paint thinners or other organic solvents to clean the product surface.
Indicator Operation: The stability indicator (green) lights up when detection/no detection status is stable within the rated ambient operating temperature (10 to 55°C).
Connection: Always turn off power before connecting/disconnecting metal connectors. Hold the connector cover, not the cable, and secure it by hand (do not use pliers). Apply specified tightening torques for M8 (0.3 to 0.4 N·m) and M12 (0.4 to 0.5 N·m) connectors to prevent loosening and reduced protection.
Mounting Direction: For distance-settable models, ensure the sensing side is parallel to the object's surface. If the object is glossy, incline the sensor by 5° to 10° to avoid background interference. Avoid installing the sensor below mirror-like objects or incline it away from them.
Power Reset Time: The sensor is ready 100 ms after power-on. If the load and sensor have independent power supplies, turn on the sensor before the load.
Avoiding Malfunctions: When using with an inverter or servomotor, ground FG and G terminals to prevent malfunction.
Installation: Avoid mounting sensors face-to-face to prevent mutual interference. Install carefully to prevent direct exposure to intensive light (sunlight, fluorescent, incandescent). Do not strike the sensor during installation. Use M3 screws for mounting, with a tightening torque not exceeding 0.54 N-m for the case.