Leuze IS 112 MM/2NO-4E0

Leuze IS 112 MM/2NO-4E0

The IS 112 MM/2NO-4E0 from Leuze electronic is a high-performance inductive proximity switch designed for precision and durability in industrial automation environments. This sensor is known for its compact design, robust construction, and reliable detection capabilities.


πŸ“¦ Product Overview

  • Product Name: Inductive Switch

  • Part Number: 50129864

  • Model: IS 112 MM/2NO-4E0

  • Manufacturer: Leuze electronic GmbH + Co. KG

  • Country of Origin: Germany


πŸ“ Technical Specifications

βœ… Basic Data

  • Series: 112

  • Design: Cylindrical

  • Housing Thread: M12 x 1 mm

  • Housing Color: Red (RAL 3000), Silver

  • Installation Type: Embedded

  • Active Surface Material: Plastic (PBT)

  • Housing Material: Nickel-plated brass

πŸ“ Detection Range

  • Typical Operating Range Limit (Sn): 4 mm

  • Usable Operating Range (Sa): 0 to 3.2 mm

  • Standard Measuring Plate: 12 mm Γ— 12 mmΒ², Fe360


⚑ Electrical Specifications

πŸ”’ Protection Features

  • Overload protection

  • Polarity reversal protection

  • Short-circuit protection

πŸ”‹ Power Supply

  • Voltage: 10–30 V DC

  • Residual Ripple: ≀ 10% of supply voltage

  • Open-Circuit Current: 0–10 mA

πŸ”„ Switching Parameters

  • Switching Frequency: 3000 Hz

  • Switching Hysteresis: 15%

  • Temperature Drift: Max. 10% of Sr

  • Repeatability: Max. 1% of Sr

πŸ”˜ Output Details

  • Output Type: 1 x Digital

  • Switching Element: Transistor, NPN

  • Switching Principle: Normally Open (NO)

  • Switching Current (Max): 200 mA

  • Residual Current (Max): 0.01 mA

  • Voltage Drop: ≀ 2 V


πŸ”Œ Connection Details

  • Number of Connections: 1

  • Cable Length: 2000 mm

  • Cable Type: 3-wire

  • Sheathing Material: PVC

  • Wire Cross Section: 0.35 mmΒ²

  • Cable Color: Black

  • Conductor Colors and Assignments:

    • Brown: V+

    • Blue: GND

    • Black: OUT 1


🌑️ Environmental Conditions

  • Operating Temperature Range: -25Β°C to +70Β°C

  • Storage Temperature Range: -25Β°C to +70Β°C

  • Degree of Protection: IP67

  • Compliance Standard: IEC 60947-5-2


πŸ’‘ Indicators

  • Display Type: LED

  • LED Color: Yellow

  • Function: Continuous light when switching state is active


🧩 Mechanical Design

  • Dimensions (Ø x L): 12 mm x 50 mm

  • Thread Size: M12 x 1 mm

  • Mounting Method: Threaded


πŸ“ˆ Part Number Code Explanation

  • IS: Inductive Switch

  • 112: Series (M12 thread)

  • MM: Metal housing with plastic sensing face

  • 2NO: NPN transistor, Normally Open output

  • 4E0: 4 mm range, Embedded installation


πŸ“Š Classification and Standards

  • ECLASS: 27274001 (Versions 12.0 to 15.0)

  • ETIM: EC002714 (Versions 5.0 to 10.0)

  • Customs Tariff Number: 85365019


⚠️ Important Notes

  • This product is not a safety sensor and should not be used for personnel protection.

  • Installation and operation must be done by qualified personnel only.

  • Always follow the intended use guidelines and reference full documentation 


πŸ–ΌοΈ Illustrations & Diagrams

  • Complete dimension drawings, electrical wiring diagrams, and part numbering are available in the original datasheet.

  • Active sensing area and LED display are clearly marked in the visual layout.

Troubleshooting Points for IS 112 MM/2NO-4E0

Use this checklist to systematically diagnose and resolve issues with the sensor:

Power Supply & Wiring Issues

  1. βœ… Check if 10–30V DC power supply is correctly connected to brown (V+) and blue (GND) wires.

  2. βœ… Ensure no open circuit exists in the power supply line.

  3. βœ… Verify that wire cross-section (0.35 mmΒ²) matches connection standards.

  4. βœ… Inspect the cable for cuts, wear, or corrosion.

  5. βœ… Confirm all wiring terminals are tight and secure.

Output/Signal Problems

  1. βœ… Make sure the black wire (OUT) is correctly routed to the input module.

  2. βœ… If output is not received, measure voltage between black and blue wires.

  3. βœ… Verify the transistor output load current does not exceed 200 mA.

  4. βœ… Check if the output is pulled high when inactive (NPN logic).

  5. βœ… Confirm external load device is functioning (PLC input, relay, etc.).

Sensing Issues

  1. βœ… Ensure target material is ferromagnetic (Fe360 recommended).

  2. βœ… Confirm that sensing range does not exceed 4 mm.

  3. βœ… Check for presence of non-metallic or shielded targets blocking detection.

  4. βœ… Make sure the object is aligned correctly with the sensing face.

  5. βœ… Remove dust, oil, or moisture buildup from sensing surface.

Environmental Factors

  1. βœ… Confirm operating temperature is within -25Β°C to +70Β°C.

  2. βœ… Ensure sensor isn’t exposed to excessive vibration or impact.

  3. βœ… Make sure the sensor housing is not overheating.

  4. βœ… Keep sensor away from high-frequency electromagnetic interference (EMI).

  5. βœ… Verify protection against water ingress (IP67 β€” but not submersible).

LED Behavior

  1. βœ… LED must glow yellow when the object is detected.

  2. βœ… No LED = Power loss or output failure.

  3. βœ… Blinking or dim LED = Unstable power or damaged circuit.

  4. βœ… Replace sensor if LED is non-functional despite correct wiring.

Mounting & Mechanical

  1. βœ… Ensure sensor is properly threaded and securely mounted (M12 thread).

  2. βœ… Do not over-tighten the sensor, as it may damage the housing.

  3. βœ… Confirm minimum 3Sn clearance from metal objects around the sensor.

  4. βœ… Check for proper embedded mounting and no overhanging targets.

General & Advanced Checks

  1. βœ… Replace sensor and re-test to rule out hardware failure.

  2. βœ… Use an oscilloscope or multimeter to verify switching behavior and response timing (up to 3000 Hz).


βœ… Conclusion

The Leuze IS 112 MM/2NO-4E0 inductive switch is robust, compact, and suitable for embedded industrial installations. With proper wiring, mounting, and environmental consideration, it delivers high-speed and reliable object detection. Use the troubleshooting checklist above for effective diagnosis and uninterrupted operation.

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