Panasonic LS-403 Digital Laser Sensor Amplifier

Technical Overview

Compact digital laser sensor amplifier with 80µs response, NPN outputs, and advanced teaching functions for high-speed industrial automation.

Key Features

Digital Laser Sensor Amplifier (Connector type)
NPN open-collector transistor outputs (Max 50 mA sink current, 30 V DC applied voltage)
Selectable Light-ON or Dark-ON output operation via jog switch
Incorporated short-circuit protection
Multiple response time settings: 80 µs (H-SP), 150 µs (FAST), 500 µs (STD), 4 ms (U-LG)
Operation (Orange), Laser emission (Green), and Select (Yellow) LED indicators
4-digit green + 4-digit red LED digital display
Multiple sensitivity setting modes: 2-level teaching, Limit teaching, Full-auto teaching, Manual adjustment, Window comparator, Hysteresis, Differential (8-level for LS-403)
Fine sensitivity adjustment function
Variable ON-delay / OFF-delay / ONE SHOT timer function (0.5 to 9,999 ms approx. for LS-403)
High vibration resistance: 10 to 150 Hz, 0.75 mm double amplitude or 49 m/s² for 2 hours each (X, Y, Z directions)
Dielectric strength: 1,000 V AC for one minute
Body material: ABS
Visible laser spot for straightforward alignment

Technical Specification Matrix

Parameter	Value
Part Number	LS-403
Supply Voltage	12 to 24 V DC ± 10 % Ripple P-P 10 % or less
Current Consumption (Normal)	950 mW or less (40 mA or less at 24 V)
Current Consumption (ECO Mode)	780 mW or less (33 mA or less at 24 V)
Output Type	NPN open-collector transistor
Maximum Sink Current	50 mA
Applied Output Voltage	30 V DC or less (between output and 0 V)
Residual Output Voltage	1.5 V or less (at 50 mA sink current)
Response Time (H-SP)	80 µs or less
Response Time (FAST)	150 µs or less
Response Time (STD)	500 µs or less
Response Time (U-LG)	4 ms or less
Operating Temperature	-10 to 55°C
Body Material	ABS
Vibration Resistance	10 to 150 Hz frequency, 0.75 mm double amplitude or maximum acceleration 49 m/s² in X, Y, and Z direction for 2 hours each
Dielectric Strength	1,000 V AC for one min.
Output Operation	Selectable Light-ON or Dark-ON
Short-circuit protection	Incorporated
Physical Weight (kg)	0
Dimensions L x W x H (cm)	7.5 x 3 x 1

Industrial Applications

1. High-Speed Object Detection in Manufacturing Automation

Utilizing its rapid 80µs response time, the LS-403 amplifier is ideal for detecting fast-moving components or products on high-speed production lines and conveyor systems. Its compact dimensions allow seamless integration into confined spaces.

Problem Solved

Ensures accurate and timely detection of items at high throughput, minimizing missed counts and preventing production line errors in demanding industrial environments.

high-speed detectionconveyor systemsindustrial automationrapid responseNPN output

2. Precision Part Alignment and Inspection in Robotic Systems

The fine sensitivity adjustment and various teaching modes (e.g., window comparator, hysteresis) of the LS-403 enable precise detection of minute variations in part position or presence. Its small form factor makes it suitable for mounting on robotic end-effectors or within compact robotic work cells.

Problem Solved

Enhances the accuracy of robotic pick-and-place operations and quality control checks, leading to improved assembly precision and reduced defects in automated manufacturing.

precision sensingrobotic assemblyquality controlfine sensitivitycompact form factor

3. Automated Package Sorting in Logistics Centers

With its standard 12-24V DC industrial power compatibility and integrated timer functions (ON-delay/OFF-delay), the LS-403 provides reliable object detection and timing control for automated sorting lines. Its robust vibration resistance ensures consistent performance in dynamic logistics environments.

Problem Solved

Offers dependable detection and controlled timing for automated sorting machines, ensuring efficient and accurate routing of packages to their designated destinations.

material handlingpackage sortinglogistics automationtimer functionsvibration resistant