Pepperl+Fuchs LD28/LV28-F1/47/74/76a Thru-beam sensor

Pepperl+Fuchs LD28/LV28-F1/47/74/76a
Item Number: LD28/LV28-F1/47/74/76a
  • Universal series with highly versatile fields of use
  • Resistant against noise: reliable operation under all conditions
  • Highly visible LED as alignment aid in receiver optics
  • Emitter with test input
  • Version with red light
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Housing depth54.3 mm
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
Angle of divergenceEmitter 1.2В°,
Receiver 5В°
Operating voltage10 ... 30 V DC
Ambient light limit50000 Lux
Alignment aidLED red (in receiver lens)
illuminated constantly: beam is interrupted,
flashes: reaching switching point,
off: sufficient stability control
Diameter of the light spotapprox. 0.6 m at 30 m
EmitterLD28-F1/74/76a
Control elementssensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch
Switching typelight/dark on, switchable
Signal output2 PNP, complementary, short-circuit protected, reverse polarity protected , open collectors
No-load supply currentEmitter: 50 mA
Receiver: 35 mA
Protection classII, rated voltage 250 V AC with pollution degree 1-2 according to IEC 60664-1
Switching currentmax. 200 mA
Light sourceLED
Mission Time (TM)20 a
Diagnostic Coverage (DC)90 %
Ambient temperature-40 ... 60 В°C (-40 ... 140 В°F)
Mass140 g (emitter and receiver)
Light typemodulated visible red light , 660 nm
Transmitter frequencyF1 = 25 kHz
Effective detection range0 ... 30 m
Product standardEN 60947-5-2
Threshold detection range40 m
ReceiverLV28-F1/47/74
Housing height88 mm
Switching frequency1000 Hz
Operation indicatorLED green
Response time0.5 ms
Ripple10 %
UL approvalcULus Listed , Class 2 power source
Test inputemitter deactivation at +UB (Imax. < 3 mA at 30 V DC)
Degree of protectionIP67
Connection4-pin, M18 plastic connector
Housing width25.8 mm
MTTFd620 a
Switching voltagemax. 30 V DC
CCC approvalCCC approval / marking not required for products rated 36 V
Storage temperature-40 ... 75 В°C (-40 ... 167 В°F)

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