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120988
Pepperl + Fuchs 120988 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Pepperl+Fuchs 120988, model NBN40-L2-E0-V1, is a non-flush inductive proximity sensor designed for reliable detection of metallic objects in industrial automation applications. It features a 40 mm rated operating distance, a normally open NPN output and a three-wire 10–30 V DC connection. Its bidirectional, rotatable sensor head and quick-mounting bracket support flexible positioning, while four LEDs provide clear 360-degree visibility of operating and switching status.
Constructed with a durable polyamide housing and sensing face, the sensor is rated to IP68 and IP69K for use in demanding environments. It operates at switching frequencies up to 180 Hz and supports output currents up to 200 mA. Reverse-polarity and short-circuit protection enhance electrical robustness, while the four-pin M12 connector enables straightforward integration. Measuring 40 × 40 × 67 mm, the unit operates across an ambient temperature range of -25°C to 85°C.
Constructed with a durable polyamide housing and sensing face, the sensor is rated to IP68 and IP69K for use in demanding environments. It operates at switching frequencies up to 180 Hz and supports output currents up to 200 mA. Reverse-polarity and short-circuit protection enhance electrical robustness, while the four-pin M12 connector enables straightforward integration. Measuring 40 × 40 × 67 mm, the unit operates across an ambient temperature range of -25°C to 85°C.
| Specification | Description |
|---|---|
| Manufacturer | Pepperl+Fuchs |
| Part Number | 120988 |
| Model | NBN40-L2-E0-V1 |
| Product Type | Inductive proximity sensor |
| Switching Function | Normally open (NO) |
| Output Type | NPN, 3-wire DC |
| Rated Operating Distance | 40 mm |
| Assured Operating Distance | 0–32.4 mm |
| Actual Operating Distance | 36–44 mm |
| Installation | Non-flush |
| Operating Voltage | 10–30 V DC |
| Operating Current | 0–200 mA |
| Switching Frequency | 0–180 Hz |
| Voltage Drop | Maximum 2 V |
| Off-State Current | 0–0.5 mA |
| No-Load Supply Current | Maximum 20 mA |
| Hysteresis | Typically 5% |
| Start-Up Delay | 80 ms |
| Electrical Protection | Reverse-polarity protection and pulsing short-circuit protection |
| Status Indicators | Green operating-voltage LED and yellow switching-state LED, arranged for 360° visibility |
| Sensor Head | Bidirectional and rotatable |
| Connection Type | 4-pin M12 × 1 connector plug |
| Pin Assignment | Pin 1: L+ (brown); Pin 2: white; Pin 3: L− (blue); Pin 4: output (black) |
| Housing Material | Polyamide (PA) |
| Sensing Face Material | Polyamide (PA) |
| Ingress Protection | IP68 / IP69K |
| Protection Class | Class II |
| Ambient Temperature | −25 to +85 °C |
| Storage Temperature | −40 to +85 °C |
| Dimensions | 67 × 40 × 40 mm |
| Mass | 155 g |
| Standard Conformity | EN IEC 60947-5-2 |
| Rated Insulation Voltage | 253 V |
| Rated Impulse Withstand Voltage | 4,000 V |
| Mounting Feature | Quick-mounting bracket |
| Reduction Factor – Stainless Steel 304 | 0.75 |
| Reduction Factor – Brass | 0.38 |
| Reduction Factor – Aluminium | 0.30 |
| Reduction Factor – Copper | 0.28 |
What type of device is this?
It is an inductive proximity sensor designed to detect metallic objects without physical contact. The device model is NBN40-L2-E0-V1 and corresponds to Pepperl+Fuchs reference 120988.
What is the sensor's rated operating distance?
The rated operating distance is 40 mm. Its assured operating range is 0 to 32.4 mm, while the specified actual operating distance is between 36 and 44 mm.
What output configuration does the sensor use?
The sensor uses a three-wire DC, NPN, normally open output. The output switches when a suitable metal target enters the sensing range.
What operating voltage is required?
It operates from a 10 to 30 V DC supply and includes reverse-polarity protection.
What is the maximum output current?
The permitted operating current is up to 200 mA. The voltage drop across the output is no more than 2 V.
How quickly can the sensor detect moving targets?
It has a switching frequency of up to 180 Hz, making it suitable for detecting repeated metal target movements in automated machinery.
Does the sensor detect all metals at the same distance?
No. The sensing distance varies according to the target material. The stated reduction factors are 0.75 for 304 stainless steel, 0.38 for brass, 0.30 for aluminium and 0.28 for copper.
How should the sensor be installed?
This is a non-flush inductive sensor, so the sensing face should project beyond surrounding metal. Adequate clearance helps prevent nearby metalwork from affecting detection performance.
Can the sensing head be repositioned?
Yes. The sensor head is bidirectional and rotatable, allowing its orientation to be adapted to the machine layout. A quick-mounting bracket is incorporated into the design.
What electrical connector does it use?
The sensor uses a four-pin M12 x 1 connector plug. Pin 1 is the positive supply, pin 3 is the negative supply and pin 4 carries the switching output.
What do the indicator lights show?
Green LEDs indicate the operating voltage, while yellow LEDs indicate the switching state. Four indicators provide visibility around the sensor from multiple viewing angles.
What environmental protection does the housing provide?
The housing is rated IP68 and IP69K, providing a high degree of protection against dust, water immersion and high-pressure water exposure when correctly installed with a suitable connection.
What temperature range can the sensor operate within?
Its specified ambient operating temperature is -25 to 85 °C. The permitted storage temperature range is -40 to 85 °C.
What are the sensor's dimensions and weight?
The housing measures approximately 40 mm high, 40 mm wide and 67 mm long. Its stated mass is 155 g.
What housing materials are used?
Both the main housing and sensing face are made from polyamide, commonly abbreviated as PA.
Does the output include electrical protection?
Yes. The unit has pulsing short-circuit protection as well as reverse-polarity protection. Its off-state current is no more than 0.5 mA.
How long does the sensor take to become operational after power is applied?
The specified delay before availability is 80 ms, after which the sensor is ready to detect a suitable target.
Which standard does the sensor conform to?
The sensor is specified as conforming to EN IEC 60947-5-2, the standard covering proximity switches used in industrial control applications.
- Detecting the presence of metal components on automated production lines
- Monitoring machinery positions and end-of-travel points
- Confirming component placement during assembly processes
- Counting metal products moving along conveyor systems
- Detecting large metallic targets from distances of up to 40 mm
- Providing non-contact switching in industrial control systems
- Monitoring material handling and packaging machinery
- Verifying the open or closed position of metal doors, gates and guards
- Detecting steel fixtures, carriers and pallets in manufacturing cells
- Supporting position feedback in harsh, dusty or wet industrial environments
- Monitoring mobile equipment where a robust M12-connected sensor is required
- Replacing mechanical limit switches in high-cycle applications
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
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6 months ago
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