ФЕСТО СМЕ-8М-ДС-24В-К-0.3-Магнитный переключатель цилиндра M8D

Номер детали.: 543861

Продукт: T-slot cylinder magnetic switch, магнитогерконовый контакт, 3-провод Нормально-Открытый (НЕТ), 0.3 Кабель м с 3-контактным штекерным разъемом M8, крепление с винтовым замком, совместим с ВЕЧЕРИНКА T-slot cylinders.

Расшифровка модели СМЕ-8М-ДС-24В-К-0.3-М8Д

Электрическое ядро & Механические характеристики

Sensing principle: Magnetic-reed

Выход: 3-wire Normally-Open NO, bipolar contact, no short-circuit protection, no reverse-polarity protection

Макс. ток нагрузки: 500 mA direct load; 80 mA when using mounting accessories

Макс. switching capacity: DC 10 W; AC 10 VA

Падение напряжения: 1.17 В

IP-рейтинг: IP65 / IP68

Рабочая температура: -40 ℃ ~ +70 ℃; energy-chain cable: -5 ℃ ~ +70 ℃

Масса: 8.9 г

Status indicator: Built-in LED; LED illuminates upon detection of cylinder piston magnet ring

Кабель: Oil-resistant, energy-chain-rated for > 5 million bending cycles

⚠️Important Note: No short-circuit or reverse-polarity protection. Mis-wiring may permanently destroy the sensor.

Pin Assignment M8-A-coded 3-pin Male Connector

1-Коричневый: Власть + (5-30 В)

3-Синий: 0 В ЗЕМЛЯ

4-Черный: Signal output NO

Compatible Cylinders (T-slot)

✅Supported: АДВУ, ВОПОГ, ДСБК, Национальный комитет Демократической партии, DSNU-K, DRRD, DGST and other T-slot profile cylinders

❌Not supported: Round non-slotted cylinders, legacy S-slot / C-slot cylinders; use SME-8 / SMT series for these cylinder types.

Рекомендации по установке

1. Insert sensor from top into cylinder T-slot, tighten top M2 locking screw; do not strike housing forcibly.
2. Position adjustment: Slide sensor until LED lights up when piston magnet ring passes, fine-tune position then tighten screw.
3. Reed switches exhibit hysteresis: Switch-trigger positions differ by several mm for forward / reverse piston travel; reserve mechanical margin for high-speed cylinders.
4. 0.3 m short cable; must pair with FESTO NEBU-series M8 extension cables.
5. Do not directly drive large solenoid coils; connect free-wheeling diodes across inductive loads for surge suppression.

Quick Reference for Similar Models

Совместимые аксессуары

1. M8 extension cables: NEBU-M8G3-K-0.5-M8G3 / 1 м / 2 m /5 m
2. Domestic compatible alternative: T-slot magnetic-reed switch, M8-3-pin NO, oil-resistant cable
3. Запчасти: No separate spare components; replace complete unit upon failure.

Типичные сценарии применения

1. Position detection for automated tooling cylinders: Зажимные цилиндры, подъемные цилиндры; вперед / rear position feedback to PLC. M8 plug-in enables quick disassembly-assembly for equipment maintenance.
2. Pusher / stopper cylinder position feedback for packaging machinery; 0.3 m short cable plus extension cable reduces scattered internal wiring.
3. Pneumatic gripper cylinders for robot end-effectors: ВОПОГ / ADVU compact cylinders, narrow installation space; oil-resistant cable for oily shop-floor environments.
4. Pneumatic fixture / pneumatic gate limit detection on machine tools; wide temperature range -40~70 ℃ suitable for low-temperature equipment.

Ограничения

1. Reed-contact service life inferior to Hall-effect sensors; not suitable for ultra-high-frequency millions-of-cycle operation. Use SMT-8 Hall-effect series for high-speed applications.
2. No reverse-polarity or short-circuit protection; strictly verify pin-out before wiring.
3. 0.3 m very short cable; M8 extension cables must be included in BOM during project design.

Поиск неисправностей

1. LED does not illuminate: Нет напряжения питания; sensor misaligned relative to piston magnet ring; cylinder without built-in magnet ring.
2. LED lit but no PLC input signal: Неправильная проводка; burned-out internal contacts due to excessive load; missing surge suppression for inductive loads.
3. Сигнал мерцает: Strong nearby magnetic-field interference; loose sensor mounting screw.

Customs HS-code reference: 8543709990, magnetic proximity sensor.

SME-8M-DS-24V-K-0.3-М8Д (Part-No.543861) BOM Accessories, SMT-8 Comparison, Specification Text

Critical Reminder: This sensor part-number 543861 is identical to the MS6-LFR air-service unit part-number. Always specify full model in BOM; part-number-only ordering will cause wrong-part procurement.

1. NEBU-series M8 Extension Cable BOM List

Sensor integral cable length only 0.3 m, M8-A-coded 3-pin male, requires downstream M8 female-end extension cable to PLC terminal blocks.

Cable notes: K = PUR energy-chain-rated oil-resistant cable; LE3 = 3-core; M8G3 = M8 female 3-pin; tightening torque 0.2 Nm, avoid over-torque thread damage.

Pin mapping: Brown 1(+24В), Blue 3(Земля), Black 4(Выходной сигнал).

Советы по выбору:

1) Фиксированная установка: standard cable; moving / energy-chain installation must select -K energy-chain type.

2) For M8-interface PLC I/O modules, select dual-ended plug cable: `NEBU-M8G3-K-1-M8G3`.

3) Sensor has no short-circuit / защита от обратной полярности. BOM recommendation: fit free-wheeling diodes across inductive solenoid loads.

2. SME-8M (Reed) vs SMT-8M (Magneto-Resistive Hall-Effect) Сравнение

SME-8M-DS-24V-K-0.3-М8Д: mechanical reed contacts; SMT-8M: solid-state magneto-resistive, нет механических контактов.

Руководство по выбору:

✅Choose SME-8M: General low-speed tooling, оптимизированный по затратам, occasional AC-circuit application.

✅Choose SMT-8M: High-speed reciprocation, high-cycle, 24-hour continuous-run automation lines; prefer Hall-effect type.

3. Copy-Ready BOM / Specification Descriptions

BOM Item Description (direct copy-paste)

Magnetic proximity sensor; Модель: SME-8M-DS-24V-K-0.3-М8Д; Номер детали.:543861; Brand FESTO; T-slot cylinder mounting; magnetic-reed, 3-wire Normally-Open NO; DC5-30V/AC5-30V; cable length 0.3 m, M8-A-coded 3-pin male connector; IP65/IP68; oil-resistant energy-chain-suitable cable; compatible with ADVU/ADN/DSBC/DNC T-slot profile cylinders.

Specification-document Paragraph (equipment technical documentation)

Cylinder position feedback adopts FESTO SME-8M-DS-24V-K-0.3-M8D magnetic switch, bipolar magnetic-reed-contact output supporting 5-30 V AC/DC; top-insert T-slot mounting with screw locking; built-in status-indicating LED; IP65/IP68 protection rating; 0.3 m cable with M8-A-coded 3-pin male plug, extended via NEBU-series M8 cables to PLC digital-input modules. Sensor provides no short-circuit or reverse-polarity protection; wiring strictly follows defined pin-out. Free-wheeling surge-suppression components are required for inductive loads. Used for piston-end-position detection of clamping, lifting and stopper cylinders.

4. On-site Installation-Commissioning & Additional Troubleshooting Notes
5. Установка: Insert into T-slot from top, tighten M2 screw with moderate torque to prevent housing cracking; fine-tune position until yellow LED activates upon magnet-ring passage, then lock screw.
6. Reed-switch hysteresis: Several mm offset between forward-travel and reverse-travel trigger points; reserve mechanical stroke margin for high-speed cylinders.
7. Never directly drive solenoid-valve coils; fit free-wheeling diodes across coils to avoid reed-contact burnout.
8. Вина: LED ON but no PLC input → check wiring; burned-out contacts due to overload; missing inductive-load surge suppression.
9. Signal chattering: Loose sensor mounting screw; nearby strong magnetic interference; demagnetized cylinder piston magnet ring.
10. Domestic-Alternative Reference Description

Domestic-alternative specification: T-slot magnetic-reed switch, 3-wire Normally-Open NO, M8-A-coded 3-pin male plug, 0.3 m PUR oil-resistant cable, IP67, DC5-30 V, совместим с цилиндрами FESTO с Т-образным пазом.

SME-8M Full-Series Model List + НПН / PNP PLC Wiring

Basics: SME-8M: T-slot magnetic-reed switch; DS = 3-wire NO; DO = 3-wire NC; ZS = 2-wire PNP NO; M8D = M8-A male plug; OE = open-end bare-wire; K = energy-chain-rated PUR oil-resistant cable.

Target device: SME-8M-DS-24V-K-0.3-M8D｜Part-No.543861

1. SME-8M Complete Model List

① M8D Plug-in Versions (M8-A-coded male, 3-приколоть, short 0.3 m cable, widely-used for engineering)

② OE Open-End Bare-Wire Versions (direct cable outlet without plug, for internal machine wiring)

Suffix Definitions

DS: 3-wire bipolar Normally-Open NO (works with NPN / PNP PLC inputs)

ДЕЛАТЬ: 3-wire bipolar Normally-Closed NC

ЗС: 2-wire PNP Normally-Open NO

К: PUR energy-chain-rated oil-resistant cable; non-K = standard PVC cable

М8Д: M8-A-coded threaded-lock male connector

OE: Open-end bare-wire termination

Common Electrical Characteristics: Magnetic-reed contact, no short-circuit / защита от обратной полярности; DC5-30V / AC5-30V; IP65-IP68.

2. SME-8M-DS-24V-K-0.3-M8D Wiring

M8-A 3-pin male pin-assignment

1 Коричневый: Власть + 24 В постоянного тока

3 Синий: PowerGND 0 V

4 Черный: Выходной сигнал (reed contact)

SME-8M-DS uses bipolar reed-contact switching. It is a mechanical switch element; not inherently NPNor PNP-type. Logic is determined by PLC input common COM wiring.

Схема1: Connect to PNP-type PLC Input (Sourcing Input, COM tied to 0 V)

1. Brown 1 → +24 V
2. Blue 3 → 0 V
3. Black 4 → PLC input terminal I
4. PLC input COM terminal connected to 0 V

When cylinder magnet-ring triggers, internal reed closes; terminal I receives +24 V; input turns ON.

Схема2: Connect to NPN-type PLC Input (Sinking Input, COM tied to +24 V)

1. Brown 1 → +24 V
2. Blue 3 → 0 V
3. Black 4 → PLC input terminal I
4. PLC input COM terminal connected to +24 V

When cylinder magnet-ring triggers, reed closes; terminal I is pulled to 0 V; input turns ON.

⚠️Critical Engineering Reminders

1. Never directly drive inductive solenoid-valve coils. Fit free-wheeling diodes across coils, otherwise reed contacts will rapidly burn.
2. No reverse-polarity protection; swapping brown / blue wires will destroy sensor.
3. Макс. allowable current: 500 mA direct wiring; limited to 80 mA when mounted via mounting accessories.
4. Reed-Switch Specific Troubleshooting
5. Светодиод ВЫКЛ.: Supply fault; sensor misaligned relative to piston magnet-ring; cylinder without built-in magnet ring.
6. LED ON but no PLC input:

Incorrect PLC COM-common wiring;

Reed-contact burnout caused by inductive-load stress;

Loose M8-connector / кабельное соединение.

3. Signal chattering: Loose T-slot mounting screw; demagnetized piston magnet-ring; nearby strong magnetic-field interference; reed-switch hysteresis (trigger-point offset on forward / reverse travel).
4. Краткое описание быстрого выбора

Quick-disconnect plug-in requirement: select -M8D variant (543861), match with NEBU extension cables.

Direct internal-machine hard-wiring: select -OE open-end bare-wire variant.

Высокоскоростной / millions-cycle continuous operation: discard SME reed-type; adopt SMT-8M Hall-effect series.

HS-code:8543709990