SICK WS18-3D430 — Through-Beam Photoelectric Sensor (Sender) | W18 Series Platform
Engineering Background
The SICK W18 series is SICK AG’s benchmark compact photoelectric sensor platform, engineered for the full spectrum of industrial automation demands — from high-speed packaging lines running at 500+ cycles/min to precision assembly cells requiring sub-millisecond response. The W18 family is globally deployed across automotive, food & beverage, intralogistics, and semiconductor sectors, with a proven field MTBF exceeding industry norms for its class. Konmask.com supplies W18 series components as verified OEM units with full part traceability.
Product Positioning
The WS18-3D430 is the sender (emitter) unit of a through-beam photoelectric pair within the W18 platform. It is the specification-grade choice for procurement engineers requiring long-range, high-reliability object detection where ambient light immunity, compact M18-compatible form factor, and IP67 environmental sealing are mandatory. This unit pairs with a matched W18 series receiver (e.g., WE18-3D430) to form a complete through-beam detection system. Konmask.com maintains buffer stock of common W18 variants and provides same-day RFQ response for volume orders.
Complete Technical Specifications
| Part Number | WS18-3D430 |
| Manufacturer | SICK AG (Germany) |
| Series / Platform | W18 |
| Detection Mode | Through-beam — Sender (Emitter) unit only |
| Sensing Range | Up to 30 m (with matched W18 receiver) |
| Light Source | Infrared LED (modulated, 880 nm typical) |
| Supply Voltage | 10 – 30 V DC (reverse polarity protected) |
| Current Consumption | ≤ 30 mA (no-load) |
| Output Type | Discrete digital (PNP / NPN — confirm suffix) |
| Switching Frequency | ≤ 500 Hz |
| Response Time | ≤ 1 ms |
| Ingress Protection | IP67 (IEC 60529) |
| Housing Material | Thermoplastic PBT (glass-fibre reinforced) |
| Lens / Window Material | PMMA (acrylic) |
| Connection Type | M12 × 1, 4-pin male connector |
| Cable Entry | M12 quick-disconnect (field-replaceable) |
| Operating Temperature | −40 °C to +70 °C |
| Storage Temperature | −40 °C to +85 °C |
| Dimensions (L × W × H) | Approx. 50 × 18 × 18 mm |
| Mounting Thread | M18 × 1 (standard barrel) |
| Weight | Approx. 40 g (without cable) |
| Shock Resistance | 30 g / 11 ms (IEC 60068-2-27) |
| Vibration Resistance | 55 Hz, 1 mm amplitude (IEC 60068-2-6) |
| Certifications | CE, UL, cULus, RoHS compliant |
| SICK Internal Part No. | 1012285 (verify against current SICK catalog) |
⚠ Specifications are derived from SICK AG published datasheets. Always cross-reference against the current SICK product catalog or request the official datasheet from Konmask.com prior to final engineering sign-off. SICK AG reserves the right to modify specifications without notice.
Proven Application Environments
- Packaging & Palletizing Lines — Reliable carton, tray, and pallet detection at throughput speeds up to 500 cycles/min; immune to conveyor vibration and ambient light from overhead fixtures
- Automotive Body & Assembly — Part presence and position verification on transfer lines, robotic cells, and press-feed systems; withstands weld spatter and coolant mist
- Food & Beverage Processing — IP67 housing survives CIP washdown cycles; stainless-compatible mounting brackets available; FDA-adjacent environments
- Intralogistics & Automated Warehousing — Long-range 30 m detection for AGV lane control, gate monitoring, and high-bay racking systems
- Printing & Web Handling — 500 Hz switching frequency supports high-speed sheet and web break detection on offset and flexo presses
- Semiconductor & Electronics Manufacturing — Low-EMI modulated IR beam; suitable for cleanroom-adjacent environments with strict ESD and particulate controls
- Cold-Chain & Refrigerated Logistics — Rated to −40 °C; qualified for blast-freeze tunnel and cold-storage conveyor applications
Engineering Advantages
- Modulated IR Beam (880 nm) — Synchronised emitter-receiver modulation delivers >10,000 lux ambient light immunity; eliminates false triggers from sunlight, arc welding flash, and fluorescent strobing
- IP67 Ingress Protection — Fully sealed against dust ingress and temporary immersion to 1 m / 30 min; suitable for washdown zones without additional enclosure
- Wide Supply Voltage (10–30 V DC) — Direct compatibility with standard 24 V DC industrial control panels; no additional voltage regulation required; reverse polarity protected
- Compact W18 / M18 Form Factor — 50 × 18 × 18 mm barrel integrates into standard M18 sensor brackets; drop-in replacement for legacy M18 photoelectric sensors
- M12 Quick-Disconnect Connector — Field-replaceable without panel rewiring; reduces MTTR; supports hot-swap maintenance on live production lines
- Extended Temperature Range (−40 °C to +70 °C) — Qualified for outdoor installations, cold-storage logistics, and high-ambient-temperature press environments
- Shock & Vibration Rated — 30 g shock and 55 Hz vibration resistance per IEC standards; maintains alignment on high-vibration machinery without mechanical drift
- SICK Global Support Ecosystem — Backed by SICK AG’s worldwide service network, SICK SOPAS Engineering Tool compatibility, and a comprehensive documentation library
System Architecture & Signal Flow
The WS18-3D430 functions exclusively as the emitter (sender) in a through-beam detection pair. The matched receiver unit (e.g., WE18-3D430 or equivalent W18 series receiver) is mounted directly opposite across the detection zone. The sender continuously emits a modulated IR beam; when an object interrupts the beam path, the receiver’s output transistor switches state, delivering a discrete digital signal to the connected PLC or safety relay input.
Standard M12 4-Pin Wiring (PNP configuration):
- Pin 1 — +V DC supply (Brown)
- Pin 3 — 0 V / GND (Blue)
- Pin 4 — Signal output / not used on sender (Black)
- Pin 2 — Not connected on sender unit (White)
PLC Integration Compatibility: Direct connection to standard 24 V DC digital input modules on Siemens S7-1200/1500, Allen-Bradley ControlLogix/CompactLogix, Mitsubishi MELSEC iQ-R/F, Omron NJ/NX, and Beckhoff EtherCAT I/O terminals. No special function blocks or configuration required for basic object detection. For IO-Link variants, confirm part number suffix with Konmask.com.
Recommended Mounting: Align sender and receiver on a common optical axis with ≤ 3° angular deviation. Use SICK BEF-WS/WE18 mounting brackets or equivalent M18 stainless clamps. Maintain minimum 100 mm clearance from reflective surfaces to prevent beam scatter.
Sourcing & Quality Verification
- OEM Origin — Units sourced through authorized SICK AG distribution channels or verified secondary market with documented chain of custody
- Pre-Shipment Inspection (PSI) — Each unit undergoes: visual housing inspection, SICK label authentication (part number, date code, country of origin), M12 connector pin integrity check, and functional power-on verification at 24 V DC
- Packaging Integrity — Shipped in anti-static protective packaging; original SICK retail packaging preserved where available; ESD-safe handling throughout
- Documentation Package — Official SICK AG datasheet, EU Declaration of Conformity (DoC), Certificate of Conformity (CoC), and inspection records available upon request at no additional charge
- Counterfeit Risk Mitigation — Konmask.com applies a 12-point authentication checklist aligned with SICK AG’s genuine product identification guidelines; suspected non-genuine units are quarantined and not shipped
- Warranty — 12-month Konmask.com operational warranty against manufacturing defects; SICK AG standard warranty terms apply for units in original sealed packaging
Procurement Process
- Confirm Part Number — Verify WS18-3D430 against your BOM or SICK product selector; confirm receiver pairing requirement (WE18-3D430 or equivalent)
- Request Stock Confirmation — Contact Konmask.com via email or phone to confirm current on-hand inventory and lead time for your required quantity
- Submit RFQ — Provide quantity, required delivery date, Incoterms preference, and destination port/address for accurate freight and duty quotation
- Review Proforma Invoice (PI) — Konmask issues PI within 1 business day; PI includes unit price, freight cost, payment terms, and HS code for customs clearance
- Payment & Dispatch — Standard payment: T/T bank transfer (30% deposit / 70% before shipment) or agreed open-account terms for approved accounts; dispatch within 1–3 business days of payment confirmation
- Shipment & Tracking — DHL Express / FedEx International Priority / SF Express tracking number provided within 24 hours of dispatch; full customs documentation (commercial invoice, packing list, CoO) included for international orders
Technical FAQ
Q: Does the WS18-3D430 include the receiver unit?
A: No. The WS18-3D430 is the sender (emitter) only. A matched W18 series receiver (e.g., WE18-3D430) must be ordered separately. Contact Konmask.com to source the complete through-beam pair at a combined price.
Q: Can this sensor detect transparent or translucent objects?
A: Through-beam mode is generally unsuitable for transparent object detection, as the IR beam passes through clear materials. For transparent film, glass, or PET bottle detection, specify a W18 variant with background suppression (BGS) or polarized retroreflective mode. Konmask.com can advise on the correct variant.
Q: Is the WS18-3D430 IO-Link capable?
A: The standard WS18-3D430 provides discrete digital output only. IO-Link variants exist within the W18 family — confirm the exact part number suffix with SICK AG or Konmask.com for IO-Link capability and IODD file availability.
Q: What is the typical lead time for out-of-stock units?
A: Standard replenishment lead time from SICK AG distribution is 2–6 weeks depending on region and order volume. Konmask.com maintains buffer stock for common W18 variants — contact us for real-time availability before committing to your project schedule.
Q: Can Konmask.com provide a Certificate of Conformity (CoC)?
A: Yes. CoC, SICK AG official datasheet, EU Declaration of Conformity, and pre-shipment inspection records are available upon request for all units shipped from Konmask.com at no additional charge.
Q: What is the difference between WS18 and WE18?
A: WS18 designates the sender (Sender) unit; WE18 designates the receiver (Empfänger) unit. Both are required to form a functional through-beam pair. The suffix (e.g., -3D430) must match between sender and receiver for correct optical alignment and modulation compatibility.
Q: Is this sensor suitable for safety (SIL/PLe) applications?
A: The standard WS18-3D430 is a non-safety-rated industrial sensor. For safety-rated applications (SIL 2, PLd/PLe), specify SICK’s dedicated safety light curtain or safety photoelectric product lines (e.g., deTec4, S3000). Konmask.com can source safety-rated SICK products — contact us with your SIL/PL requirement.
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