PR-F51N3 Keyence Self-contained Miniature Photoelectric Sensor

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Model PR-F51N3
Type Thrubeam
Shape Flat
Output NPN
Cable connection 3 m cable
Detection distance 0.6 m
Number of control outputs 2 outputs
Output operation Output 1 Dark-ON
Output 2 Light-ON
Response time Output 1 0.5 ms
Output 2 ON→OFF: 2.7 ms, OFF→ON: 0.5 ms
Sensitivity adjustment None
Spot diameter
Light source 4 element, point light source, red LED (650 nm)
Mutual interference prevention function
Indicator lamp Output indicator (orange), stable operation indicator (green), thrubeam type transmitter: power supply indicator (green)
Control output 30 VDC or lower, 50 mA or lower
Leakage current:
When 3 kΩ load resistance, 0.3 mA or lower. When 1 kΩ load resistance, 0.5 mA or lower. When 0.2 kΩ load resistance, 1.5 mA or lower
Residual voltage:
When 10 mA or lower, 1.0 V or lower. When 10 to 30 mA, 1.5 V or lower. When 30 to 50 mA, 2.0 V or lower.
Protection circuit Power supply reverse connection protection, output overcurrent protection,
output surge protection, power supply surge protection
Rating Power voltage 10 to 30 VDC, including Ripple (P-P) 10 %
Current consumption Transmitter: 11 mA, Receiver: 16 mA
Environmental resistance Enclosure rating IP67 (IEC60529), IP69K (DIN40050-9), 4X, 6P, 13 (NEMA250)
Insulation resistance 20 MΩ or higher (500 VDC)
Ambient light Incandescent lamp: 5,000 lux or lower, Sunlight: 20,000 lux or lower
Ambient temperature -25 to +55 °C -13 to 131 °F (No freezing)
Storage temperature -25 to +75 °C -13 to 167 °F
Relative humidity 35 to 85 % RH (No condensation)
Withstand voltage 1,000 VAC, 50/60 Hz, 1 min
Vibration resistance 10 to 55 Hz, Double amplitude 1.5 mm 0.06″, 2 hours in each of the X, Y, and Z directions
Shock resistance 1,000 m/s2, 6 times in each of the X, Y, and Z directions
Materials Case: SUS316L, indicator cover/lens cover: polysulfone,
cord protector: polymethylpentene, filler: polyester-based resin
Accessories Instruction manual
Weight Approx. 80 g


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