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  3. Industrial Sensors
  4. Photoelectric Sensors
  5. Thru-Beam Sensors
  6. LD28/LV28-F1/49/76a/82b/115

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LD28/LV28-F1/49/76a/82b/115 Thru-beam sensor

Key Benefits at a Glance

  • 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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Please contact us for exact delivery estimation.
Product photo: Thru-beam sensor LD28/LV28-F1/49/76a/82b/115
Product photo: Thru-beam sensor LD28/LV28-F1/49/76a/82b/115
Product Compliance: Europe – CE
Product Compliance: EU - protection class II
Product Compliance: USA - cULus
Product Compliance: United Kingdom – UKCA
Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

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DatasheetClassificationProduct DocumentationApprovalsRelated Products

Technical data of LD28/LV28-F1/49/76a/82b/115

Universal thru-beam sensor, large housing design, 30 m detection range, red light, 25 kHz transmission frequency, light/dark on, DC version, NPN output, PNP output, test input, pre-fault output, fixed cable
EmitterLD28-F1/76a/115
ReceiverLV28-F1/49/82b/115
Effective detection range0 ... 30 m
Threshold detection range40 m
Light sourceLED
Light typemodulated visible red light , 660 nm
Alignment aidLED red (in receiver lens)
illuminated constantly: beam is interrupted,
flashes: reaching switching point,
off: sufficient operating reserve
Transmitter frequencyF1 = 25 kHz
Diameter of the light spotapprox. 0.6 m at 30 m
Opening angleEmitter 1.2°,
Receiver 5°
Ambient light limit50000 Lux
MTTFd620 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)90 %
Operation indicatorLED green
Function indicatorLED yellow:
1. LED lit constantly: signal > 2 x switching point (operating reserve)
2. LED flashes: signal between 1 x switching point and 2 x switching point
3. LED off: signal < switching point
Control elementssensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch
Operating voltageUB10 ... 30 V DC
Ripple10 %
No-load supply currentI0Emitter: ≤ 50 mA
Receiver: ≤ 35 mA
Test inputemitter deactivation at +UB (Imax. < 3 mA at 30 V DC)
Stability alarm output1 PNP transistor, short-circuit protected, reverse-polarity protected, open collector, Umax = 30 V DC, Imax = 0.2 A
The output becomes inactive if the signal level has fallen below the operating 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.
Switching typelight/dark on, switchable
Signal output1 NPN, 1 PNP synchronized-switching, short-circuit protected, reverse polarity protected , open collectors
Switching voltagemax. 30 V DC
Switching currentmax. 200 mA
Switching frequencyf1000 Hz
Response time0.5 ms
Product standardEN 60947-5-2
Protection classII, rated voltage ≤ 250 V AC with pollution degree 1-2 according to IEC 60664-1
UL approvalcULus Listed , Class 2 power source
CCC approvalCCC approval / marking not required for products rated ≤36 V
Ambient temperature-40 ... 60 °C (-40 ... 140 °F)
Storage temperature-40 ... 75 °C (-40 ... 167 °F)
Degree of protectionIP67
Connection2.5 m, 5-wire, fixed cable, Euronorm
Material
HousingPlastic ABS
Optical facePlastic pane
Mass500 g (emitter and receiver)
Dimensions
Height88 mm
Width25.8 mm
Depth54.3 mm
General Notes