Pepperl+Fuchs LA28/LK28-LAS-F1-7675 Thru-beam sensor (pair)

Pepperl+Fuchs LA28/LK28-LAS-F1-7675
Item Number: LA28/LK28-LAS-F1-7675
  • 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
  • Programmable time function GAN, GAB, IAB as well as GAN-IAB and GAN-GAB as double function
  • Laser version for long ranges
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  • Overview
  • Datasheet
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Signal outputRelay, 1 alternator
Switching powerDC: max. 50 W AC: max. 500 VA
Control elementssensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch
Ambient light limit50000 Lux
Effective detection range0 ... 120 m
Housing width25.8 mm
Diameter of the light spotApprox. 20 mm at 5 m, approx. 75 mm x 300 mm at 70 m horizontal in relation to the housing axis
Housing height88 mm
Light typemodulated visible red light
Operating voltage12 ... 240 V AC/DC
Protection classII, rated insulation voltage 250 V AC with pollution degree 1-2 according to IEC 60664-1 Output circuit insulated from control circuit in accordance with IEC 61140.
The protection class 2 is only valid when the terminal compartment is closed.
Connectionterminal compartment with 8 spring-loaded terminals for wire cross section 0.5 ... 1.5 mm2 , Insulation stripping 7.5 ... 8.5 mm , M16 x 1.5 cable gland
Switching frequency25 Hz
Housing depth65.5 mm
FDA approvalIEC 60825-1:2007 Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007
Degree of protectionIP67
Product standardEN 60947-5-2
Switching voltagemax. 250 V AC/DC
Angle of divergenceEmitter: 0.23 В°
Receiver: 5 В°
Diagnostic Coverage (DC)0 %
Switching currentmax. 2 A
Threshold detection range150 m
Power consumption 3.5 VA
Ambient temperature0 ... 40 В°C (32 ... 104 В°F)
MTTFd440 a
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
Response time20 ms
Laser safetyEN 60825-1
Alignment aidLED red (in receiver lens)
illuminated constantly: beam is interrupted,
flashes: reaching switching point,
off: sufficient stability control
Operation indicatorLED green
Switching typelight/dark on, switchable . (selectable, light/dark switching is only activated if the receiver has 'dark on' selected.)
Light sourcelaser diode
Storage temperature-20 ... 75 В°C (-4 ... 167 В°F)
Mass200 g (emitter and receiver)
Timer functionON delay (GAN), OFF delay (GAB), one shot (IAB), ON delay-OFF delay (GAN-GAB), programmable
adjustment range 0.1 ...10 s
Mission Time (TM)20 a
UL approvalcULus Listed
Caution: This equipment is considered as open-type equipment. It must be mounted within an enclosure, that is suitably designed for protection against internal fire and personal injury resulting from accessibility to live parts according UL 508.


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