
Autonics BUP-50-P Photoelectric Sensor
Autonics BUP-50-P U-Shaped Through-Beam Photoelectric Sensor (50 mm, PNP)
Industrial U-shaped through-beam photoelectric sensor with 50 mm sensing gap and PNP open-collector output.
Designed for high-speed part counting, object presence detection, and conveyor automation.
The Autonics BUP-50-P is a U-shaped through-beam photoelectric sensor engineered for reliable, high-speed detection across a 50 mm fixed sensing gap. Featuring PNP open-collector output, ≤1 ms response time, and Light-ON/Dark-ON selection, it is ideal for conveyor lines, counting systems, 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
PNP open-collector output
Light-ON / Dark-ON selectable
Built-in power & operation indicators
Excellent resistance to electrical noise
Rugged industrial housing
Stable performance for continuous automation
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | BUP-50-P |
| 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 |
| Output Type | PNP open collector |
| Supply Voltage | 12–24 V DC ±10% |
| 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-P Photoelectric Sensor
Instruction manual
FAQ
Q1. What does “50” indicate in BUP-50-P?
It indicates a 50 mm sensing gap.
Q2. What does “P” denote?
“P” denotes PNP open-collector output.
Q3. Is this a reflective or through-beam sensor?
It is a through-beam U-shaped photoelectric sensor.
Q4. Is it suitable for high-speed counting?
Yes, ≤1 ms response time supports fast-moving objects.
Q5. Can it be used in industrial environments?
Yes, IP66 protection ensures reliable industrial operation.



