Photoelectric Label Gap Sensor, 12-24V DC, NPN/PNP Output

SKU: SUCH-CS-TR03T

$246.91

● Output type: NPN, PNP ● Light source: Infrared light (940nm) ● Slot width & depth: 3mm, 60mm ● Minimum tag spacing: ≥2mm

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Overview
Specs
Application
FAQ
Reviews

Overview

This photoelectric label gap sensor utilizes infrared detection (940nm) with a 3mm slot width and 60mm slot depth design, achieving a minimum label spacing of ≥2mm. Operating within a 12-24V DC voltage range, it ensures precise label positioning. The label sensor features NPN/PNP outputs and is equipped with red, green, and blue indicator lights for real-time status and error calibration alerts. Installation is flexible, supporting either a 2m cable or a 25cm M8 plug connection.

Dimension (unit: mm)

Label gap sensor dimension

Wiring Diagram

Label gap sensor wiring diagram

Label Gap Sensor Calibration Setup

Normally Open Mode (Green LED constantly lit)

Move one or more labels away from the substrate and advance the blank area into the sensor.
When the blank area advances to the detection center, the blue output LED turns on.
When a label advances to the detection center, the blue output LED turns off.
If set correctly, the LED will flash normally between the label and the gap.
Operation complete.

Normally Closed Mode (Green LED Off)

Remove one or more labels from the backing material and advance the blank area into the sensor.
When the blank area advances past the detection center, the blue output LED turns off.
When the label advances past the detection center, the blue output LED turns on.
If set correctly, the LED will blink normally between the label and gap. Operation complete.

Primarily observe the blue output LED and switch output for display.

Basic Operations in Standard Mode

Basic operation in standard mode

Indicator Type	Color	Description
Error Indicator	Red	If there is no operation error, the red light does not turn on. If the set upper limit is reached or the last calibration is improperly calibrated, the red light turns on.
NO NC Indicator	Green	When the sensor is in operation, the green light is always on.
Output Indicator	Blue	Displays switch output signal. If a label gap is detected, the LED turns on.

Specs

Output Type	NPN, PNP
Slot Width	3mm
Slot Depth	60mm
Minimum Tag Spacing	≥2mm
Light Source	Infrared light (940nm)
Response Frequency	Max 10kHz
Tag Transmission Speed	≤20m/min (0.3m/s)
Response Time	≤50µs
Startup Delay	≤300ms
Operating Voltage	12-24VDC (ripple ≤15%)
Current Consumption	<30mA
Warning Output	Red indicator light on
Switch Output Function	Light-on operation / Light-off operation (switchable)
Voltage Drop	≤2V
Output Current	≤10mA
Indicator Light	Red light: Calibration error/Operational error
	Green light: Normally open/Normally closed
	Blue light: Detection of tag switch output signal
Operating Temperature	-20°C~+60°C (No condensation, no ice)
Storage Temperature	-30°C~+70°C
Protection Rating	IP65
VDE Safety Rating	III
Housing Material	Zinc die-cast, surface chemically plated with nickel (silver); PC plastic
Wiring Method	2m three-core cable connection / 25cm cable + M8 plug
Weight	Approx. 55g (approx. 100g with cable)

Application

Automatic Labeling Machine

Label gap sensor of apackaging assembly line

Packaging Production Line

Printing Industry

FAQ

Q1: How to adjust the switch output signal of the label gap sensor? ❯

Outputting a switch signal at the label gap/outputting a switch signal at the label position—this standard function is typically used during sensor operation. This photoelectric label gap sensor can detect labels and their gaps with high speed and accuracy. The primary indicators are the blue output indicator light and the switch output display.

Q2: Precautions for using photoelectric label gap sensors ❯

Before powering on, ensure the power supply voltage is within the rated range. The label sensor begins normal detection 100 milliseconds after power-up.
When the sensor and load are powered by separate power supplies, ensure the sensor power is turned on first.
When deactivating the label gap sensor, it is recommended to first disconnect the load power supply before turning off the sensor power.
Avoid applying excessive external force (e.g., hammering) during installation to prevent performance degradation.
Do not use thinners, alcohol, or other organic solvents for cleaning.

Q3: Photoelectric label gap sensor safety warning ❯

Do not use in environments containing flammable, explosive, or corrosive gases.
Do not use in environments containing oil or chemicals.
Do not use in environments with high humidity.
Do not use in environments exposed to direct sunlight.
Do not use in other environmental conditions exceeding the rated values.
Do not disassemble, repair, or modify this label gap sensor without authorization.

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Photoelectric Label Gap Sensor, 12-24V DC, NPN/PNP Output

Dimension (unit: mm)

Wiring Diagram

Label Gap Sensor Calibration Setup

Basic Operations in Standard Mode

Automatic Labeling Machine

Packaging Production Line

Printing Industry

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