Telemecanique XS118B3PAM12 Inductive Proximity Sensor

Brand: Telemecanique Sensors, OsiSense XS1 Series, M18 flush-mount inductive sensor

Model Code Explanation

XS1 18 B3 P A M12

XS1: XS1 general-purpose inductive sensor series

18: Thread size M18×1

B3: Flush-shielded type, nominal sensing distance Sn = 8 mm

P: PNP output

A: Normally-Open (NO)

M12: M12-4-pin male connector

Core Technical Specifications

Pin Assignment (M12-4-pin Male Connector)

1-Brown: DC + Power

2-Black: PNP Signal Output

3-Blue: 0V / GND

4-Not connected

Application

Position detection of metal objects on machine tools, conveyor lines, packaging machinery and mobile equipment. Suitable for wash-down conditions (IP69K).

Interchangeable Models within the Same Series

1. XS118B3NAM12: NPN-NO, rest parameters identical
2. XS118B3PCM12: PNP NO+NC, 4-wire output
3. XS118B3PBL2: PNP-NO, 2 m fixed cable version

Key Points for Domestic-made Replacement

M18 flush-mount, sensing distance 8 mm, PNP-NO, M12 connector, 12-24 VDC, 200 mA

Must select shielded-flush type; do NOT use non-flush variant (Sn 12 mm) by mistake.

Core Advantages of Telemecanique XS-Series Inductive Proximity Sensors

Applicable to XS118B3PAM12 (XS1-series M18 flush-mount model) shown above.

1. High Electrical Reliability, Low Field Failure Rate
2. Comprehensive built-in protection: Integrated short-circuit, overload and reverse-polarity protection. Tolerates wiring mistakes and load short-circuits without easy burnout, offering high on-site fault tolerance for industrial environments.
3. Stable output: Small differential hysteresis (1-15 % Sn), low signal jitter. No false triggering on high-speed stations; switching frequency up to 2000 Hz for high-cycle machinery.
4. Wide voltage tolerance: DC versions accept 12-24 V DC; withstands transient surges up to 36 V for plants with unstable power supplies.
5. Fully resin-potted solid-state circuitry, no mechanical contacts. Unlimited mechanical service life for continuous long-term operation.
6. Robust Mechanical & Protection Performance for Harsh Conditions
7. Standard nickel-plated brass housing; premium versions in stainless steel. PPS sensing face resists impact, cutting fluid, oil and emulsion corrosion.
8. Ingress rating IP67 / IP68 / IP69K, withstands high-pressure wash-down for food-processing and machine-tool environments. Complies with IEC vibration and shock standards; stable under heavy machine vibration.
9. Broad operating-temperature range:-25℃～+70℃ standard; special variants up to +85 ℃ for cold-store and hot-workshop applications.
10. Full lineup of flush / non-flush options. Flush-shielded units can be fully embedded into metal fixtures without false triggering, offering high installation flexibility (XS118B3PAM12 is flush-mount).
11. Excellent Anti-Interference Performance (Critical for Industrial Sites)

-Optimized internal oscillator circuit. Lower false-signal probability vs ordinary domestic sensors in strong-EMI areas near inverters and servo drives; reliable performance on machine-tools and welding stations.

-Consistent sensing distance across units; minimal part-to-part Sn deviation. No repeated adjustment required during mass-equipment commissioning.

4. Comprehensive Portfolio for Easy Selection & Spare-parts Management
5. Full range of sizes: M8/M12/M18/M30 cylindrical, square-flat, micro sizes. Flush / non-flush; PNP / NPN; NO / NC; cable-out / M12 connector; AC-DC 2-wire; IO-Link intelligent variants available.
6. Standardized part-number coding. Complete parameters can be interpreted directly from model codes such as XS118B3PAM12, simplifying selection, replacement and spare-part handling.
7. Global approvals: CE, UL, CSA, CCC; ready-to-use for export-oriented machinery.
8. Large installed base; complete drawings, datasheets and CAD resources. Mature distributor network for easy spare-part procurement.
9. Convenient Operation & Maintenance
10. Clear yellow-LED status indicator for fast on-site diagnostics.
11. M12-connector versions enable fast field replacement without cable stripping and crimping, minimizing downtime.
12. Non-contact detection; zero mechanical wear, no contact-burn-out failure mode.

Objective Limitations vs Competitors

1. Higher purchase cost than general domestic proximity sensors.
2. Lead-time fluctuations for some legacy part numbers.
3. Reduced sensing distance for non-ferrous metals (Al, Cu). This is inherent to inductive-sensor principle, not brand-specific defect.

Typical Application Fields

Machine tools, conveyor systems, packaging machinery, automotive tooling, food-processing wash-down equipment, welding stations, heavily-vibrated automation equipment.

Practical Application Cases of Telemecanique XS-Series Inductive Proximity Sensors

Cases cover XS118B3PAM12 (M18 flush-mount, Sn 8 mm, PNP-NO, M12 connector). Each includes working condition, solution and model recommendation.

Case 1: CNC Machine Tool — Fixture & Pallet-In-Position Detection

Working Condition: Machine-tool interior with cutting fluid, emulsion and oil; heavy vibration and strong EMI from servo / inverter systems. Detect whether fixtures and pallets are properly seated to prevent empty cuts and machine collision.

Solution: XS118B3PAM12 flush-mounted into fixture base to sense metal work-holding jigs. PNP signal sent to PLC; machining cycle only permitted after valid fixture detection.

Selection Justification: IP67/IP69K wash-down resistance; built-in reverse-polarity / short-circuit protection; vibration resistance; flush-shield design prevents false triggering against surrounding metal; yellow-LED visual status feedback.

Alternative: XS112B3PAM12 (M12) for compact-space installation.

Case 2: Conveyor & Sorting Line — Work-piece Arrival & Stopper-Cylinder Position Feedback

Working Condition: Factory conveyor with dust and oil contamination, continuous cyclic operation. Detect metal-work-piece arrival and extend-retract status of stopper cylinders for part-blocking, diverting and counting functions.

Solution: XS118B3PAM12 mounted on machine frame to sense cylinder piston rods and metal work-piece brackets. M12 quick-connector simplifies maintenance change-outs without re-crimping cables.

Selection Justification: 1 kHz switching frequency matches medium-cycle conveyors; wear-resistant nickel-plated brass housing; low signal jitter ensures reliable counting; unified part number for fleet-wide spare-part management.

Case 3: Automotive Component Tooling — Assembly-Station Presence Confirmation

Working Condition: Automotive-assembly tooling with occasional welding spatter and high vibration. Verify correct loading of metal components to avoid missing-part or mis-loading faults.

Solution: XS1-series M18 flush-mount sensors distributed across tooling. Next clamping action enabled only after all presence signals are confirmed. Upgrade to XS4 weld-field Factor 1 models for heavy-spatter zones (constant sensing distance for all metal types, anti-spatter performance).

Selection Justification: Low hysteresis, high detection consistency; immunity to welding-equipment EMI; CE/UL approvals for export machinery.

Case 4: Packaging Machinery — Filling & Cartoning Mechanism Position Sensing

Working Condition: Packaging lines with wash-down cleaning cycles and humid environment. Detect position of mechanical stops, cams and cylinders to sequence filling and cartoning actions.

Solution: XS118B3PAM12 for standard stations. Stainless-steel-housed XS variants for food-grade high-pressure wash-down (IP69K).

Selection Justification:-25~+70 ℃ operating range; fast-swap M12 connector; comprehensive electrical protection prevents sensor burnout from field wiring errors.

Case 5: Press-Equipment — Mold-Protection & Ejection-Confirmation

Working Condition: Press-shop environment with heavy shock-vibration and oil contamination. Confirm correct work-piece ejection; inhibit mold closing if no part detected for mold-damage prevention.

Solution: Long-range XS5-M30 series (Sn ≥ 15 mm) to compensate for mold wear and positional offset. XS118B3PAM12 NOT recommended; prioritize long-distance M30 sensors for press applications.

Selection Justification: High shock-vibration tolerance; generous installation tolerance; short-circuit / overload protection for fluctuating shop power.

Case 6: Robot Work-cell — Gripper-Part-Presence & Mechanical-Limit Detection

Working Condition: Robot end-effector with compact layout and reciprocating motion. Verify metal-part gripping status and mechanical hard-stop positions.

Solution: XS2-M12 for compact grippers; XS118B3PAM12 for larger targets. IO-Link capable XSA-series for high-end stations to access sensor diagnostic data.

Selection Justification: Fully-potted shock-resistant construction; non-contact wear-free operation; M12 plug compatible with robot-cable-chain routing.

Case 7: Lifting & Construction Machinery — Mobile-Equipment Limit-Position Detection

Working Condition: Lifts, hoists and construction machinery with wide temperature swing, heavy vibration, outdoor dust and rain exposure. Detect limit positions of booms and sliders for over-travel alarm.

Solution: XS1-series cylindrical proximity sensors (wide-voltage capable variants) for limit-alarm duties.

Selection Justification: Wide temperature range; high shock resistance; IP67 for outdoor harsh-environment deployment.

Quick-Reference Selection Table

Technical Specifications of Telemecanique XS-Series Inductive Proximity Sensors

Three sections: Full specifications of XS118B3PAM12; general electrical-mechanical specs for XS family; comparison of main sub-series.

1. Full Specifications of XS118B3PAM12 (M18 Flush-mount, PNP-NO, M12 Connector)

2. General Technical Specifications for XS-Series Inductive Sensors

Electrical Specifications

1. Power Supply

-3-wire DC: 12-24 VDC, absolute limit 10-36 VDC. Reverse-polarity, short-circuit and overload protection standard.

-2-wire AC-DC: 24-240 VAC / 24-210 VDC

2. Output Types: PNP, NPN; NO / NC / NO+NC; IO-Link intelligent; Analog 0-10 V / 4-20 mA
3. Output Current: Max 200 mA for DC transistor types; Max 300 mA for 2-wire AC types
4. Switching Frequency: M8 up to 5 kHz; M12 approx 2 kHz; M18 approx 1 kHz; M30 approx 500 Hz; AC-2-wire ≤ 25 Hz
5. Hysteresis: Typical 1-15 % Sn; Repeat accuracy ≤ 1 % Sn

Mechanical & Environmental Specifications

1. Body Styles: Cylindrical M8, M12, M18, M30; square, flat, micro Φ4-M5; flush-mount / non-flush-mount versions.
2. Housing Materials: Nickel-plated brass, 303/316L stainless steel, PPS plastic.
3. Connection Options: 2 m fixed cable; M8/M12 male / female connector.
4. Ingress Protection: IP67 baseline; selected models IP68, IP69K for high-pressure wash-down.
5. Operating Temperature:-25℃～+70 ℃ standard; high-temperature variants up to 85 ℃.
6. Certifications: CE, UL, CSA, CCC; SIL2 safety-rated options available.
7. Comparison Table of Main Sub-series

4. Critical Selection Guidelines
5. Flush Mount: Sensor may be fully embedded into metal fixture without false triggering. XS118B3PAM12 is flush-mount with Sn = 8 mm.
6. Non-Flush Mount: Sensing face must protrude from surrounding metal. Longer sensing distance; cannot be recessed into metal bore.
7. Factor-1 (XS4): Near-identical sensing distance for steel, aluminium and copper. Preferred for non-ferrous-metal-target applications.
8. IP69K: Rated for high-temperature high-pressure wash-down, for food-industry machinery.
9. IO-Link versions: Support temperature reading, part-counting, remote NO/NC inversion and threshold adjustment; enables predictive-maintenance capability.