Schneider Electric XS630B4PAL2 Inductive Proximity Sensor – XS6 Series

Schneider Electric XS630B4PAL2 – M30 Cylindrical Inductive Proximity Sensor in Industrial Detection Circuits

The XS630B4PAL2 is a 30 mm barrel-format inductive proximity sensor from Schneider Electric’s XS6 product family, designed for non-contact ferrous and non-ferrous metal detection in continuous-duty industrial environments. Operating on a 12–24 V DC supply, the device delivers a nominal sensing range of 4 mm with an NPN normally-open (NO) switching output, making it directly compatible with the sinking digital input channels found on the majority of modern PLC platforms. The pre-wired 2-metre PVC cable eliminates the need for field-side connector assembly, reducing installation labour and the risk of wiring errors in high-density panel builds.

Unlike capacitive or photoelectric alternatives, the XS630B4PAL2 relies on eddy-current loss within a ferrite-core oscillator coil to detect target presence without physical contact. This mechanism produces no mechanical wear on the sensing face, sustaining detection accuracy across millions of switching cycles without recalibration. The IP67-rated thermoplastic housing withstands full dust ingress and temporary immersion to 1 metre for 30 minutes, qualifying the sensor for wash-down zones, outdoor enclosures, and coolant-splash environments common in machining and food-processing lines.

At siemensplc.com, every XS630B4PAL2 unit is sourced through verified supply channels and dispatched from our Xiamen, China warehouse with full traceability documentation available on request. Our technical team provides pre-sale wiring guidance, PLC compatibility mapping, and post-sale integration support for OEM builders and MRO procurement teams alike.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The XS630B4PAL2 is built around a Colpitts-type LC oscillator whose ferrite-core coil is embedded flush with the sensing face. When a conductive target enters the electromagnetic field, eddy currents induced in the target surface extract energy from the oscillator, reducing its amplitude. A threshold comparator monitors oscillation amplitude continuously; once the amplitude drops below a calibrated trip point, the NPN output transistor switches to the low-impedance (conducting) state, pulling the output line toward 0 V and signalling target presence to the connected PLC input.

EMC and Noise Immunity: The oscillator frequency is selected to avoid harmonic overlap with 50/60 Hz mains interference and common VFD switching frequencies (typically 2–16 kHz). The housing acts as a Faraday shield for the coil assembly, and the output stage incorporates a Zener clamp to suppress inductive load transients generated when the NPN transistor switches inductive wiring. This combination allows the XS630B4PAL2 to operate within 50 mm of parallel cable runs carrying 24 V DC solenoid signals without false triggering.

Hysteresis and Repeat Accuracy: The device maintains a switching hysteresis of approximately 10–15% of Sn (0.4–0.6 mm), preventing output chatter when a target dwells near the detection boundary. Repeat accuracy under stable thermal conditions is better than ±0.1 mm, which is sufficient for part-present confirmation in assembly jigs where positional tolerance is held to ±0.5 mm.

Thermal Drift: Sensing range variation across the full -25 °C to +70 °C operating band is bounded by the IEC 60947-5-2 specification at ±10% of Sn, equating to ±0.4 mm. For applications where ambient temperature swings exceed 40 °C, the assured sensing range (Sa ≥ 3.2 mm) should be used as the design margin rather than the nominal 4 mm figure.

Short-circuit and Reverse Polarity Protection: The output stage integrates a current-limiting circuit that clamps output current during a short-circuit event and resets automatically once the fault is cleared, avoiding the need for external fusing on individual sensor lines. Reverse polarity protection diodes prevent damage if supply wires are inadvertently transposed during commissioning.

System Integration Benefits

• Direct PLC Sinking Input Compatibility: The NPN NO output drives standard 24 V DC sinking digital inputs (Type 1, 2, and 3 per IEC 61131-2) without interposing relays or signal converters, reducing BOM cost and panel wiring density.
• Wide Supply Voltage Tolerance: The 12–24 V DC operating range accommodates both 12 V DC auxiliary rails common in mobile machinery and 24 V DC control cabinets in fixed plant, allowing a single sensor SKU to cover multiple machine variants.
• High Switching Frequency for Motion Control: At up to 500 Hz, the sensor can resolve target presence on conveyor systems moving at speeds where target dwell time at the sensing face is as short as 2 ms, supporting accurate counting and speed measurement without missed pulses.
• IP67 Sealing for Harsh Environments: Full dust-tight and temporary-immersion protection eliminates the need for protective covers or purged enclosures in wash-down and outdoor installations, reducing mechanical complexity and maintenance intervals.
• Pre-wired Cable for Rapid Deployment: The 2 m PVC cable with colour-coded conductors (brown = V+, blue = 0 V, black = output) conforms to IEC 60947-5-2 wiring conventions, allowing technicians to terminate and verify connections without consulting sensor-specific documentation.
• Auto-reset Short-circuit Protection: Eliminates the need for individual fuse holders on sensor supply rails in multi-sensor junction boxes, simplifying panel design and reducing component count.
• Vibration and Shock Ratings for Mobile and Press Applications: 25 g vibration and 50 g shock ratings allow mounting directly on press platens, robotic end-effectors, and vehicle chassis without vibration-isolation mounts.
• Flush-mountable M30 Thread: The standard M30 × 1.5 thread fits widely available stainless-steel and brass mounting brackets, and the flush-mount design permits embedding in metal machine frames without a minimum stand-off distance, maximising installation flexibility in tight geometries.

Quality Assurance & Global Logistics

Every XS630B4PAL2 unit dispatched by siemensplc.com is a genuine Schneider Electric component procured through traceable supply channels. Prior to shipment from our Xiamen, China facility, each sensor undergoes a three-stage verification process: label and date-code authentication against OEM reference data, dimensional inspection of the sensing face and thread profile, and functional output verification using a calibrated 24 V DC test bench. Units that do not pass all three stages are quarantined and returned to the supplier.

Xiamen’s position as a major southern China logistics hub provides direct access to DHL Express, FedEx International Priority, UPS Worldwide Express, and SF Express international services. In-stock orders placed before 14:00 CST are typically dispatched the same business day. Transit times to major industrial centres are 3–5 business days to Southeast Asia, 5–7 business days to Europe and the Middle East, and 5–8 business days to North America. For project-volume orders requiring consolidated shipment or specific Incoterms (EXW, FOB Xiamen, CIF), our logistics team prepares formal freight quotations within one business day.

A 12-month warranty from the date of dispatch covers manufacturing defects and premature failure under normal operating conditions. Warranty claims are processed with replacement dispatch within 3 business days of fault confirmation. Certificate of Conformity and test records are available on request for quality-system audits.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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