Sensor fotoeléctrico liso SH-SL671-T

SH-SL671-T

SH: Miniature slot-type sensor fotoeléctrico series under Smooth brand

SL: L-type side outlet mounting structure (side-out slot sensor)

671: Standard 5mm slot width with universal 671 body dimension, interchangeable with Omron EE-SX671

t: 4-wire switchable output version (DARK-ON / LIGHT-ON dual modes)

2. Core Electrical & Hardware Specifications

3. 4-Wire Wiring Definition (Brown/Blue/Black/White)
4. Marrón (BN): DC24V Positive, VCC
5. Azul (ESTE): DC0V Negative, Tierra
6. Negro (bk): Main Output OUT (Normally Open NO; DARK-ON when white wire is floating)
7. Blanco (WH): Mode Switch Wire

White wire floating: DARK-ON (output signal when object enters slot)

White wire connected to brown wire (+24V): LIGHT-ON (output signal without blockage)

Lógica de cableado

Connect to NPN PLC Input: Black wire to PLC input terminal, Blue wire to PLC COM terminal

Connect to PNP PLC Input: Black wire to PLC input terminal, Brown wire to PLC COM terminal

4. Estructura & Dimensiones de montaje

L-type side outlet design; body equipped with left & right mounting holes (φ3.2mm screw holes). Fully compatible with EE-SX671 mounting footprint for direct replacement of imported equivalent sensors.

Slot Height: 13milímetros

Overall Thickness: 14.5milímetros

Horizontal mounting base on cable outlet side, ideal for narrow side mounting of equipment.

5. Ambient Operating Conditions
6. Temperatura de funcionamiento: -25℃ ~ +55 ℃ (no icing or condensation)
7. Temperatura de almacenamiento: -30℃ ~ +70℃
8. Ambient Illumination: Sunlight ≤10,000lux, Fluorescent light ≤3,000lux
9. Humedad: 35%~85% HR, sin condensación
10. Certificaciones: Cumple con RoHS, general industrial use
11. Características principales del producto
12. Dual Mode Switching: T suffix with dedicated white mode wire; switch NO/NC without replacing sensor
13. High-Speed Stable Detection: 0.5ms response time, suitable for assembly line counting, positioning and home position detection
14. Anti-Interference Optimization: Built-in filter circuit to resist electromagnetic interference from inverters and motors
15. Bend-Resistant Cable: Special flexible cable for cable chains, resistant to breakage under reciprocating motion
16. Full Interchangeability: Identical dimension, slot width and pin layout with EE-SX671, UX-671-WR, SGY-SX671-WR for direct substitution
17. Escenarios de aplicación típicos
18. Home position limit and cylinder in-place detection for automated equipment
19. Material counting and label presence detection on small production lines
20. Thin paper/film detection for printers, labelers and slitting machines
21. Material shortage detection for small conveyor belts and transmission gears
22. Miniature workpiece in-place sensing for medical devices and 3C equipment

8. Cross-Series Replacement Model Comparison Table

9. Matriz de solución de problemas comunes

Full-Industry Application Scenarios of Smooth SH-SL671-T Slot Photoelectric Sensor

SH-SL671-T is a miniature U-shaped through-beam sensor featuring L-type side outlet, 4-wire switchable DARK-ON/LIGHT-ON and standard 5mm slot width. It matches EE-SX671 mounting footprint and fits compact equipment spaces. Its core advantages include 3kHz high-speed response and universal NPN/PNP switchable output. Industry-specific practical applications are listed below:

1. Precision 3C Electronics Automation (Primary Application Field)
2. Home Position Limiting for Linear Modules/Slides

L-type side outlet version installed in narrow side space of modules. Metal blocking tabs inserted into the slot identify mechanical home position and upper/lower limits. Switchable 4-wire logic adapts to various PLC programs. With repeat accuracy ≤0.03mm, it is standard equipment for mounters, dispensers and screw tightening machines.

2. Presence Detection of PCBs, Terminales & Thin Sheets

Detects in-feed of thin PCBs ≥0.8mm, copper terminals and FPC flexible circuits. Triggers immediate halt & alarm for missing or jammed boards; zero missed detection at 3kHz high-speed feeding.

3. In-place Confirmation for Small Air Cylinders & Grippers

Thin metal tabs fitted to cylinder tails. The sensor outputs signal upon full extension/retraction to control gripper pick-and-place operations.

4. Semiconductor Packaging & Wafer Conveyance

Detects carrier tape sprocket holes and counts wafer pellets in mini material bins, dedicated for compact cleanroom equipment. Side outlet avoids interference with mechanical movements.

5. Wire Processing Machines

Installed on feed channels of wire strippers & cutters to detect wire passage, implement length counting and trigger halt for wire breakage.

2. Embalaje, Impresión & Labeling Equipment
3. Label/Film Position & Deviation Correction

Slitters, labelers and adhesive printing machines detect black mark on labels to trigger cutting and labeling actions. Stable detection for thin plastic films without reflection interference.

2. High-Speed Counting for Cartons & Blister Packs

Mounted at infeed of cartoners to count cardboard and tablet blisters, trigger shortage alarms. Dual switchable logic supports “output with material / output without material”.

3. Cap & Small Part Channel Detection

Installed on capping machines and daily chemical filling lines to check cap presence and prevent uncapped empty bottles. U-shaped through-beam design performs more stably than diffuse sensors under oily conditions.

4. Office Printers & Copiers

Paper feed detection, paper jam alarm, cover closed detection and toner cartridge in-place sensing. Direct drop-in replacement for original EE-SX671.

3. Logistics Conveyance & AGV Intelligent Warehousing
4. Production Line Material Counting & Shortage Detection

Side-mounted on mini belt & chain conveyors to count small cartons and plastic parts, send feeding trigger when material runs out.

2. AGV Station Positioning & Fork Limit Detection

L-type mounted on AGV side bodies. Ground blocking tabs entering the slot confirm docking position and fork lifting/lowering limits, realizing millimeter-level precise stop for magnetic-guided & QR-code AGVs.

3. Diverter Trigger for Sorting Machines

Used for small express & part sorting; activates push rod diverting mechanism after detecting passing goods.

4. Mini Bin In-place Detection for Automated Warehouses

Limit switch for mini storage boxes entering/exiting bins to monitor stock status.

4. Dispositivos médicos & Small Testing Instruments
5. Test Strip & Kit Insertion Detection

For blood glucose meters, biochemical analyzers and strip readers. Confirms fully inserted strips to start testing procedures; compact size fits portable medical equipment.

2. Medical Consumable Packaging Machines

Detects in-feed of syringes, cotton swabs and reagent bottles, triggers alarm for missing parts.

3. Equipment Cover Safety Interlock

Monitors closed status of instrument protective doors; cuts off operation signal if cover is open.

5. Pequeñas máquinas herramienta, Moldeo por inyección & Hardware Automation
6. Hopper Shortage Detection for Injection Molding Machines

Mini slideway sensor monitors plastic pellet feeding and alerts operators when raw materials run low.

2. Gear Speed Measurement & Pulse Counting

Recurring gear teeth block light path to output pulses for speed calculation and rotation tally; 3kHz high frequency matches high-speed rotating shafts.

3. Strip Feed Detection for Stamping & Mini Punch Presses

Confirms metal thin strip feed-in to prevent blank stamping and stacked material.

4. Spindle Home Position Reset for Cutting Tools

Origin positioning for spindles of engraving machines and small milling machines.

6. Industria ligera, Vending Machines & Gate Security
7. Vending Machines

Coin insertion detection, goods drop confirmation and channel stock monitoring.

2. Turnstile Mini Passage Anti-Pinch Protection

Mini access control turnstiles detect pedestrian passage to activate anti-pinch safety function.

3. Small Textile Equipment

Yarn & webbing breakage detection; thin woven belts pass through the slot to monitor material continuity.

7. Exclusive Advantages of SH-SL671-T (4-Wire T Suffix Only)
8. Mixed PLC equipment (PNP & PNP models): Switch output logic via white wire without sensor replacement, reducing spare part varieties
9. Dual control logic required at single station (halt on arrival / halt on shortage): Directly toggle DARK-ON/LIGHT-ON without rewiring
10. Narrow side mounting space: L-type outlet saves vertical space and suits side-mounted mechanisms better than SK top-outlet models
11. High-speed thin material detection: 0.5ms response eliminates missed triggers for thin paper, films and terminals
12. Unsuitable Application Scenarios

Ultra-thin objects below 0.8mm, transparent non-light-blocking materials

Thick workpieces requiring slot width wider than 5mm (select 10/15mm wide-slot models)

Unprotected outdoor environments with intense sunlight, heavy dust or oil mist (light shield cover required)

Real-World Installed Application Cases of Smooth SH-SL671-T (By Industry, Including Mounting Logic, Selection Reasons & Consejos para la puesta en servicio)

Core strengths of SH-SL671-T: L-type side outlet, 4-wire dual DARK-ON/LIGHT-ON switchable mode, standard 5mm slot width, direct EE-SX671 replacement, universal NPN/PNP. Mature mass-production equipment cases are listed below:

1. 3C Electronics Automation (Highest Mass Installation Volume)

Caso 1: Linear Module Home Position Limit for Desktop Screw Tightening Machine

1. Equipment Working Condition: Horizontal moving lead screw slide with narrow side mechanism space. Original imported EE-SX671 has long lead time; bulk replaced with SH-SL671-T
2. Método de montaje: Holes drilled on module base side for horizontal routing of L-type side outlet cable, no interference with reciprocating slide motion. Metal blocking tab slides into 5mm slot to trigger home position signal
3. Lógica de control: White wire floating = DARK-ON. Signal output when tab enters slot, PLC identifies mechanical origin and executes homing sequence
4. Selection Highlights: Universal 4-wire design enables shared spare part for factory NPN & PNP PLC equipment, lowering inventory volume; 0.5ms high-speed response prevents signal loss on fast slides
5. Actual Outcome: Overall false homing failure rate dropped from 0.8% a 0.05%

Caso 2: Material Shortage / In-place Detection for FPC Feeder

1. Equipment Working Condition: Thin flexible circuit boards (0.8~1.5mm thick), narrow feed channel sides requiring real-time board presence monitoring
2. Montaje: Sensor fixed on channel side wall; boards pass through U-slot to block light path
3. Flexible Dual-Mode Commissioning

Normal feeding detection: White wire floating, signal output under board blockage to trigger suction pickup

Material shortage alarm: White wire connected to +24V to switch to LIGHT-ON mode; continuous output without board blockage triggers equipment halt alarm

4. Compatibility Advantages: Side outlet cable attaches closely to wall to avoid scratching delicate FPCs; built-in reverse & short-circuit protection prevents signal flicker under motor electromagnetic interference on production floors

Caso 3: In-place Confirmation of Mini Pneumatic Grippers (Terminal Crimping Machine)

Thin metal tabs fitted to cylinder gripper tails. Sensor confirms full gripper closure before activating crimp action. Uniform adoption of SH-SL671-T across multi-station equipment eliminates NPN/PNP model differentiation, boosting equipment commissioning efficiency by 60%.

2. Embalaje & Printing Equipment Industry

Caso 4: Black Mark Position Detection for Adhesive Labelers

1. Working Condition: High-speed thin plastic label web relies on black mark light blockage to trigger cutting & etiquetado
2. Montaje: L-type fixed on paper channel side; label film passes through slot opening
3. Operating Logic: DARK-ON mode. Pulses output as black marks block light path to synchronize servo cutting
4. Field Advantages: Immune to film reflection compared with diffuse photoelectric sensors; 3kHz high frequency ensures zero missed triggers at 300 labels per minute high-speed labeling

Caso 5: Counting & Missing-Pack Prevention for Blister Cartoning Machines

Sensor mounted on blister feed slideway, generating counting pulses as each blister pack passes through slot. No sensor replacement needed for production line logic switching; simply short white wire to toggle “output with material / halt without material”, supporting flexible production of multi-spec pharmaceutical packs.

3. Semiconductor & Precision Testing Equipment

Caso 6: Sprocket Hole Counting for Carrier Tape Encapsulation Machines

1. Working Condition: Continuous conveyance of electronic component carrier tape; sprocket hole light blockage counts output quantity for yield control
2. Montaje: Side-mounted on narrow internal equipment frame; L-side outlet does not occupy vertical space
3. Selection Justification: Mini form factor fits compact cleanroom packaging equipment; IP50 dust resistance suits low-dust clean workshops; 0.03mm repeat accuracy precisely detects tiny carrier sprocket holes
4. AGV Intelligent Warehousing & Mini Conveyors

Caso 7: Fork Lifting Limit for Mini Storage AGVs

1. Working Condition: Limited side mounting space on compact warehouse AGVs; metal tabs on lifting forks trigger upper/lower travel limit protection
2. Control Scheme: DARK-ON for lower pick-up limit; switch to LIGHT-ON for upper safe height limit. Single sensor model fulfills two limit logics
3. Field Value: Unified vehicle spare parts eliminate output type differentiation during maintenance, reducing after-sales part varieties

Caso 8: Material Shortage Alarm for Mini Belt Conveyors

Sensor arranged along plastic part conveyor sides; material passage blocks light path. When material supply runs out with no blockage, LIGHT-ON mode outputs alarm signal to auto-start feeding mechanism.

5. Equipo médico

Caso 9: Test Strip Insertion Detection for Dry Biochemical Analyzers

1. Working Condition: Ultra-compact interior of portable medical instruments requiring confirmation of fully inserted test strips
2. Montaje: L-type sensor horizontally fixed on test strip chamber side wall; inserted strips block light path
3. Operating Logic: DARK-ON signal output triggers biochemical testing sequence; standby mode activated automatically after strip removal with no signal
4. Ventajas: Low-power wide DC5~24V voltage suits built-in instrument lithium batteries; free of electromagnetic interference to avoid disrupting reagent optical detection
5. Oficina & General Automation Equipment Retrofit

Caso 10: Paper Jam / Feed Detection for Industrial Label Printers

Drop-in replacement for original EE-SX671 installed on paper channel sides. Continuous signal indicates normal paper feed; long-term signal absence triggers shortage alert, while constant blockage identifies paper jam for safety halt. Universal 4-wire design compatible with mainboards of multiple printer brands, unifying sensor model for equipment retrofits.

Caso 11: Goods Drop Detection for Vending Machines

Side-mounted on product delivery slideways. Falling goods pass through U-slot to generate pulse signals confirming successful dispensing. White wire switchable logic fits both spring and belt cargo channel machine models.

7. Pequeñas máquinas herramienta & Wire Processing Equipment

Caso 12: Wire Breakage Monitoring for Wire Cutters & Strippers

Sensor fixed on wire feed channel sides; copper/electronic wires pass through slot. LIGHT-ON halt signal output upon wire breakage to prevent idle cutting and cutter damage.

Caso 13: Spindle Home Position Limit for Engraving Machines

Mounted on narrow Z-axis side of engraving machines; inserted blocking tab identifies spindle mechanical origin. 4-wire compatibility matches PLCs of multiple engraving brands for unified bulk retrofit stocking.

8. Summary of Core Pain Points Resolved by SH-SL671-T vs 3-Wire Models
9. Mixed production workshops with both NPN & PNP PLCs: Adopt single T-suffix 4-wire sensor, eliminate inventory of two separate 3-wire sensor models
10. Single stations requiring dual control logics (act on arrival / halt on shortage): One-click mode switch via white wire, no rewiring or sensor replacement
11. Narrow side-mounted mechanical structures: L-side outlet horizontal routing avoids interference with moving parts compared with SK top-outlet sensors
12. Standardized mass equipment manufacturing: Unified model cuts procurement, warehousing and after-sales maintenance costs