The Autonics BUP-50is a U-shaped through-beam photoelectric sensor designed for stable and high-speed detection across a 50 mm sensing gap. With robust industrial housing, ≤1 ms response time, and Light-ON/Dark-ON selection, it is widely used in conveyor systems, part counting applications, and OEM automation machinery.

---

Key Features

• U-shaped through-beam sensing
  
• 50 mm fixed sensing distance
  
• High-speed response: ≤ 1 ms
  
• Detects opaque objects ≥ Ø 4 mm
  
• Light-ON / Dark-ON selectable
  
• NPN & PNP output variants available
  
• Built-in power & operation indicators
  
• Excellent noise immunity
  
• Rugged industrial-grade housing
  
• Reliable for continuous automation duty

---

Technical Specifications

Parameter	Specification
Model	BUP-50
Series	BUP
Sensor Type	Photoelectric – Through-Beam
Sensing Distance	50 mm
Min. Detectable Object	≥ Ø 4 mm (opaque)
Response Time	≤ 1 ms
Light Source	Infrared LED
Peak Wavelength	940 nm
Supply Voltage	12–24 V DC ±10%
Output Type	NPN/PNP open collector
Load Current	≤ 200 mA
Protection Rating	IP66
Operating Temperature	−25 to +65 °C

---

Applications

• Part counting systems

• Conveyor automation

• Packaging & sorting machines

• Assembly lines

• Object presence detection

• OEM industrial automation

---

What’s in the Box?

• Autonics BUP-50 Photoelectric Sensor

• Instruction manual

---

FAQ

Q1. What does “50” indicate in BUP-50?
It indicates a 50 mm sensing gap.

Q2. Is this a reflective or through-beam sensor?
It is a through-beam U-shaped photoelectric sensor.

Q3. Does it support Light-ON and Dark-ON modes?
Yes, selectable via control wiring.

Q4. What output options are available?
Both NPN and PNP open-collector variants are available.

Q5. Is it suitable for fast-moving objects?
Yes, the ≤1 ms response time supports high-speed applications.