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
Item Number:
LD28/LV28-F1-3974/47/82b/112
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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, 90В° 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 В°C (-40 ... 167 В°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 В°C (-40 ... 140 В°F) |
Angle of divergence | Emitter 1.2В°, Receiver 5В° |
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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