Pepperl+Fuchs Visolux Viso+ Part No. 134 129  RLK 28-55/31/116 
Effective detection range 0 ... 17 m, light/dark on switchable, Signal output Relay, 1 alternator, Version with relay output

Pepperl+Fuchs_Visolux_Part_No.134129_ RLK28-55_31_116

Retroreflective sensor
RLK28-55/31/116
< Universal series with highly versatile fields of use
< Resistant against noise: reliable operation under all conditions
< Version with red light
< Version with relay output
Function
The series 28 family of sensors can be universally used. It has a large range of models that allows it to be integrated into any automation
environment. The sensors are contained in sturdy water resistant plastic housings with multiple fastening options and scratch resistant optical
cover. Features such as a timer function, and functions including a light/dark switch, sensitivity adjuster and highly visible status LEDs make for
less effort on the part of the user and streamline installation, setup and operation. Just about any task associated with positioning, moving,
conveying and monitoring can be accomplished with these sensors.
Application
l Object tracking in material handling, and the packaging sector
l Material flow monitoring
l Bin occupancy check in storage technology
l Fine positioning in high-bay warehouses
l Presence and height monitoring on pallet conveyors
l Single-beam protection for automatic industrial gates and elevator doors
l Protection at automatic gates

Technical Data
General specifications
Effective detection range 0 ... 17 m
Reflector distance 0.05 ... 17 m
Threshold detection range 21 m
Reference target H85-2 reflector
Light source LED
Light type modulated visible red light
Polarization filter yes
Diameter of the light spot approx. 290 mm at a distance of 17 m
Opening angle emitter 1.2°
receiver 2°
Ambient light limit 80000 Lux
Functional safety related parameters
MTTFd 600 a
Mission Time (TM) 20 a
Diagnostic Coverage (DC) 0 %
Indicators/operating means
Operation indicator LED green
Function indicator 2 LEDs yellow, light up when light beam is free, flash when falling short of the
operating reserve, are off when light beam is interrupted
Control elements sensitivity adjustment (Adjustment to < 25% of the effective operating range) , Lighton/dark-on changeover switch
Electrical specifications
Operating voltage UB 12 ... 240 V AC/DC
Power consumption P0 ≤ 3.5 VA
Output
Switching type light/dark on switchable
Signal output Relay, 1 alternator
Technical Data
Switching voltage max. 250 V AC/DC
Switching current max. 2 A
Switching power DC: max. 50 W AC: max. 500 VA
Switching frequency f 25 Hz
Response time 20 ms
Conformity
Product standard EN 60947-5-2
Approvals and certificates
Protection class II, 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.
Caution!
The protection class 2 is only valid when the terminal compartment is closed.
UL approval E87056 , cULus 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.
CCC approval Certified by China Compulsory Certification (CCC)
Ambient conditions
Ambient temperature -40 ... 60 °C (-40 ... 140 °F)
Storage temperature -40 ... 60 °C (-40 ... 140 °F)
Mechanical specifications
Degree of protection IP64
Connection terminal 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
Material
Housing plastic
Optical face Plastic pane
Mass 112 g
Dimensions
Height 88 mm x25.8 mmx
Width 25.8 mm
Depth 65.5 mm