1. General Introduction
Pepperl+Fuchs Inductive Sensor NBB20-U1-A2 is the preferred choice for the majority of applications requiring accurate, non-contact detection of metallic objects in machinery or automation equipment. As a pioneer and market leader, Pepperl+Fuchs offers innovative, high quality inductive sensors to meet the needs of the worldwide automation and process control markets. Our experience, flexibility and customer focus continues to allow us to offer custom designed solutions for the most unique and demanding applications. Its features are listed as follows:
a. Sensor head bidirectional and rotatable
b. 20 mm flush
c. 3-wire DC
d. 4-way LED indicator for 360° visibility
2. General Specification for NBB20-U1-A2
Model | NBB20-U1-A2 | |
General specifications | ||
Switching function | complementary | |
Output type | PNP | |
Rated operating distance | sn | 20 mm |
Installation | flush | |
Output polarity | DC | |
Assured operating distance | sa | 0 ... 16.2 mm |
Actual operating distance | Sr | 18 ... 22 mm |
Reduction factor rAl | 0.33 | |
Reduction factor rCu | 0.31 | |
Reduction factor r304 | 0.74 | |
Reduction factor rBrass | 0.38 | |
Output type | 4-wire | |
Nominal ratings | ||
Operating voltage | UB | 10 ... 30 V DC |
Switching frequency | f | 0 ... 440 Hz |
Hysteresis | H | typ. 5 % |
Reverse polarity protection | reverse polarity protected | |
Short-circuit protection | pulsing | |
Voltage drop | Ud | ≤ 2 V |
Operating current | IL | 0 ... 200 mA |
Off-state current | Ir | 0 ... 0.5 mA |
No-load supply current | I0 | ≤ 20 mA |
Time delay before availability | tv | 80 ms |
Operating voltage indicator | LED, green | |
Switching state indicator | LED, yellow | |
Functional safety related parameters | ||
MTTFd | 1230 a | |
Mission Time (TM) | 20 a | |
Diagnostic Coverage (DC) | 0 % | |
Ambient conditions | ||
Ambient temperature | -25 ... 85 °C (-13 ... 185 °F) | |
Storage temperature | -40 ... 85 °C (-40 ... 185 °F) | |
Mechanical specifications | ||
Connection type | screw terminals | |
Information for connection | A maximum of two conductors with the same core cross section may be mounted on one terminal connection tightening torque 1.2 Nm + 10 % | |
Core cross-section | Up to 2.5mm2 | |
Minimum core cross-section | without wire end ferrule 0.5 mm2, with connector sleeves 0.34 mm2 | |
Maximum core cross-section | without wire end ferrule 2.5 mm2, with connector sleeves 1.5 mm2 | |
Housing material | PA/metal with epoxy powder coating | |
Sensing face | PA | |
Housing base | Plastic | |
Protection degree | IP68 / IP69K | |
Mass | 225 g | |
Note | Tightening torque: 1.8 Nm (housing) | |
3. Dimensions
4. Electrical Connection
