Pepperl+Fuchs LD28/LV28-F1-3974/47/82b/112
Thru-beam sensor
- Ultra bright LEDs for power on, weak signal indication and switching state
- Highly visible LED as alignment aid in receiver optics
- Emitter deactivation
- Not sensitive to ambient light, even with switched energy saving lamps
- Extra vibration proof version
- Waterproof, degree of protection IP67
- Overview +
- Comments +
| LV28-F1-3974/47/82b/112 205802 |
Pre-fault indication output1 PNP transistor, short-circuit protected, protected from reverse polarity, open collector, Umax = 30 V DC, Imax = 0.2 A
The output becomes inactive if the signal level has fallen below the function reserve for approx. 10 s (yellow and red LEDs flash).
If the light beam is interrupted four times during this period, the output immediately becomes inactive.
| No-load supply current | Emitter: 50 mA Receiver: 35 mA |
| UL approval | cULus |
| Housing width | 25.8 mm |
| Connection | Metal connector, M12, 5-pin, 90?° rotatable |
| Product standard | EN 60947-5-2 |
| Diagnostic Coverage (DC) | 90 % |
| Housing depth | 65.5 mm |
| Ambient light limit | 50000 Lux |
| Emitter | LD28-F1-3974/76a/112 |
| Switching voltage | max. 30 V DC |
| Switching type | light/dark on switchable |
| Function indicator | LED yellow: 1. LED lit constantly: signal > 2 x switching point (function reserve) 2. LED flashes: signal between 1 x switching point and 2 x switching point 3. LED off: signal < switching point |
| Switching frequency | 1000 Hz |
| Diameter of the light spot | approx. 0.6 m at 30 m |
| Test input | emitter deactivation at +UB (Imax. < 3 mA at 30 V DC) |
| Receiver | LV28-F1-3974/47/82b/112 |
| CCC approval | CCC approval / marking not required for products rated 36 V |
| Signal output | 2 PNP, complementary, short-circuit protected, reverse polarity protected , open collectors |
| Ripple | 10 % |
| MTTFd | 620 a |
| Transmitter frequency | F1 = 25 kHz |
| EAC conformity | TR CU 020/2011 |
| Storage temperature | -40 ... 75 ?°C (-40 ... 167 ?°F) |
| Effective detection range | 0 ... 30 m |
| Degree of protection | IP67 |
| Housing height | 88 mm |
| Switching current | max. 200 mA |
| Light type | modulated visible red light , 660 nm |
| Ambient temperature | -40 ... 60 ?°C (-40 ... 140 ?°F) |
| Angle of divergence | Emitter 1.2?°, Receiver 5?° |
| Alignment aid | LED red (in receiver lens) illuminated constantly: beam is interrupted, flashes: reaching switching point, off: sufficient stability control |
| Mass | 140 g (emitter and receiver) |
| Operating voltage | 10 ... 30 V DC |
| Control elements | sensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch |
| Mission Time (TM) | 20 a |
| Light source | LED |
| Response time | 0.5 ms |
| Operation indicator | LED green |
| Threshold detection range | 40 m |
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