Pepperl+Fuchs LA28/LK28-Z-F2/31/116 Thru-beam sensor

Pepperl+Fuchs LA28/LK28-Z-F2/31/116
Item Number: LA28/LK28-Z-F2/31/116
  • 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
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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.
Housing height88 mm
Operating voltage12 ... 240 V AC/DC
Housing depth65.5 mm
Mission Time (TM)20 a
Product standardEN 60947-5-2
EAC conformityTR CU 020/2011
TR CU 004/2011
Alignment aidLED red (in receiver lens)
illuminated constantly: beam is interrupted,
flashes: reaching switching point,
off: sufficient stability control
Housing width25.8 mm
Switching voltagemax. 250 V AC/DC
MTTFd490 a
Diagnostic Coverage (DC)0 %
Switching currentmax. 2 A
Response time20 ms
Degree of protectionIP67
Signal outputRelay, 1 alternator
Light sourceLED
Diameter of the light spotapprox. 1.3 m at 65 m
Switching typelight/dark on, switchable . (selectable, light/dark switching is only activated if the receiver has 'dark on' selected.)
Ambient temperature-40 ... 60 В°C (-40 ... 140 В°F)
Storage temperature-40 ... 75 В°C (-40 ... 167 В°F)
Effective detection range0 ... 65 m
Angle of divergenceEmitter 1.2В°,
Receiver 5В°
Control elementssensitivity adjustment (Adjustment to < 25% of the effective operating range) , Light-on/dark-on changeover switch
Transmitter frequencyF2 = 30 kHz
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
Operation indicatorLED green
Mass200 g (emitter and receiver)
Ambient light limit50000 Lux
Switching powerDC: max. 50 W AC: max. 500 VA
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
Power consumption 3.5 VA
CCC approvalCertified by China Compulsory Certification (CCC)
Light typemodulated visible red light
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.
Threshold detection range90 m
Switching frequency25 Hz
Timer functionON delay (GAN), OFF delay (GAB), one shot (IAB), ON delay-OFF delay (GAN-GAB), programmable
adjustment range 0.1 ...10 s


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