Pepperl+Fuchs LD28/LV28-F1-3974/47/82b/112 Thru-beam sensor

Pepperl+Fuchs LD28/LV28-F1-3974/47/82b/112
Item Number: LD28/LV28-F1-3974/47/82b/112
  • 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
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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 currentEmitter: 50 mA
Receiver: 35 mA
UL approvalcULus
Housing width25.8 mm
ConnectionMetal connector, M12, 5-pin, 90В° rotatable
Product standardEN 60947-5-2
Diagnostic Coverage (DC)90 %
Housing depth65.5 mm
Ambient light limit50000 Lux
EmitterLD28-F1-3974/76a/112
Switching voltagemax. 30 V DC
Switching typelight/dark on switchable
Function indicatorLED 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 frequency1000 Hz
Diameter of the light spotapprox. 0.6 m at 30 m
Test inputemitter deactivation at +UB (Imax. < 3 mA at 30 V DC)
ReceiverLV28-F1-3974/47/82b/112
CCC approvalCCC approval / marking not required for products rated 36 V
Signal output2 PNP, complementary, short-circuit protected, reverse polarity protected , open collectors
Ripple10 %
MTTFd620 a
Transmitter frequencyF1 = 25 kHz
EAC conformityTR CU 020/2011
Storage temperature-40 ... 75 В°C (-40 ... 167 В°F)
Effective detection range0 ... 30 m
Degree of protectionIP67
Housing height88 mm
Switching currentmax. 200 mA
Light typemodulated visible red light , 660 nm
Ambient temperature-40 ... 60 В°C (-40 ... 140 В°F)
Angle of divergenceEmitter 1.2В°,
Receiver 5В°
Alignment aidLED red (in receiver lens)
illuminated constantly: beam is interrupted,
flashes: reaching switching point,
off: sufficient stability control
Mass140 g (emitter and receiver)
Operating voltage10 ... 30 V DC
Control elementssensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch
Mission Time (TM)20 a
Light sourceLED
Response time0.5 ms
Operation indicatorLED green
Threshold detection range40 m

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