Pepperl+Fuchs ML29-2P/25/103/143 Thru beam Sensor

The narrow miniature thru-beam sensors are a small and cost-effective solution, fitting in virtually any door frame. The ML29 and ML30 series offer fast, reliable detection at a distance of up to 8.5 m. The sensors are easy to mount on the profile, either using adhesive strips or a screw. A large opening angle ensures problem-free alignment. Several sensors can be mounted in a cross formation to offer multi-beam protection.


  • Single-beam monitoring with extremely narrow sensor
  • Integrated circuit
  • Test
  • Simple installation – Plug & Play
  • Ideal for installation in door profiles or frames
  • Dual-beam version master/slave for dual-beam protection of closing edges

Technical Data

General specifications
Effective detection range 0 … 5 m
Threshold detection range 7 m
Light source IRED
Light type modulated infrared light
Angle of divergence +/- 8 °
Optical face lateral
Ambient light limit 40000 Lux
Functional safety related parameters
MTTFd 880 a
Mission Time (TM) 20 a
Diagnostic Coverage (DC) 0 %
Indicators/operating means
Function indicator LED red in receiver : lights up when receiving the light beam
Electrical specifications
Operating voltage 11 … 30 V DC
No-load supply current ≤ 35 mA per device
Test input Test: emitter deactivation at 0 V
Switching type light-on
Signal output 1 PNP output, short-circuit protected, reverse polarity protected, open collector
Switching voltage max. 30 V DC
Switching current max. 0.1 A
Switching frequency 50 Hz
Response time 10 ms
Product standard EN 60947-5-2
Compliance with standards and directives
Standard conformity
Standards EN 61000-6-2, EN 61000-6-3
Approvals and certificates
CCC approval CCC approval / marking not required for products rated ≤36 V
Ambient conditions
Ambient temperature -20 … 60 °C (-4 … 140 °F)
Storage temperature -20 … 75 °C (-4 … 167 °F)
Relative humidity 90 % , noncondensing
Mechanical specifications
Degree of protection IP65
Connection 4-pin plastic connector, 6.5 mm diameter
Housing Transmitter: PMMA black / Receiver: red PMMA
Optical face Plastic pane
Mass 555 g


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Download Datasheet: Pepperl+Fuchs ML29-2P/25/103/143

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