SENPUM – Photoelectric Sensor PX-400 Series

Background Suppression Type

Brand : SENPUM

The PX-400 Series from Senpum is a family of background suppression type photoelectric sensors engineered for reliable detection in industrial automation applications. These sensors are designed to recognize objects within a specific distance range while ignoring background reflectivity variations, delivering stable performance even in environments with changing backgrounds and variable object surfaces. Models are categorized into Small Beam Spot, Standard Model, and Infrared (ray) types based on detection characteristics and range capabilities, allowing users to choose the right sensitivity and range for different tasks.

Each variant in the series is available with either NPN or PNP output versions, providing flexibility for different control and PLC interfacing needs. These sensors typically feature adjustable detection settings, compact housing, IP67 protection for industrial environments, and LED indicators for stable operation and output status feedback.

For more info, download our full technical spec.

Specifications

Type Reflective
Small beam spot Standard model Infrared (ray)
Model NPN
PX-441N
PX-442N PX-450MN
PNP
PX-441P
PX-442P PX-450MP
Distance setting range 20mm~100mm 20mm~300mm 50mm~400mm
Detection distance 5mm~100mm 20mm~300mm 20mm~400mm
Hysteresis*1 Less than 2% of the movement distance Less than 5% of the movement distance Less than 5% of the movement distance
Spot diameter Approx. Φ2mm (at 70mm) Approx. Φ24mm (at 300mm)
Repeat precision Along the detection axis: 1mm or less
Supply voltage 12VDC~24VDC ±10%
Consumption current Under 17mA Under 25mA
Electrical parameters Max. load current: 100mA
Max. applied voltage: 30VDC
Residual voltage: Less than 1V
Output operation: Switchable normally open and normally closed
Protection: Short circuit protection / Inverse connection protection / Overcurrent protection / Surge protection
Ambient temperature -20°C ~ +50°C
Protection class IP67
Response time Less than 1ms
Operation status indicators Green: output off, red: output on
Cable 2m

 

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