Lanbao PSM-TM - M18 Through Beam Photoelectric Sensor The Lanbao PSM-TM is an M18 cylindrical photoelectric sensor designed for long-distance object detection where a separated emitter and receiver can be mounted across the machine path. It uses through beam sensing, 20 m rated distance, Infrared light, 850 nm, NPN NO/NC or PNP NO/NC switching, and a 10-30 VDC supply range, giving machine builders a compact sensor format for part presence, package detection, material handling, and automation input signals. This PSM version uses fixed cable wiring for emitter and receiver, max. 1 ms response time, Emitter ≤20mA; Receiver ≤20mA consumption current, max. 200 mA load current, short-circuit protection, overload protection, reverse-polarity protection, IP67 protection, and CE certification. For nearby choices in the Lanbao photoelectric range, compare Lanbao PSM-TM-E2 connector version, Lanbao PSM-PM polarized reflection sensor, and Lanbao PSM-BC100 diffuse sensor before selecting the final sensing mode or wiring format. Commissioning should be done with the actual target, bracket, cable length, reflector where required, and machine background in place. Confirm the green stability indicator and yellow output indicator, verify the NO/NC wiring mode, and record the final sensor position so replacement units can be aligned consistently during maintenance. Technical Specifications Parameter Value Series Lanbao PSM-TM Model reference PSM-TM20 Sensor format M18 cylindrical photoelectric sensor Housing family PSM Detection type through beam Rated or detection distance 20 m rated distance Light source Infrared light, 850 nm Spot or target reference Standard target greater than 15 mm opaque object Output type NPN NO/NC or PNP NO/NC Response time max. 1 ms Supply voltage 10-30 VDC Consumption current Emitter ≤20mA; Receiver ≤20mA Load current max. 200 mA Voltage drop max. 1 V Circuit protection Short-circuit, overload, and reverse-polarity protection Connection 2 m PVC cable Adjustment Single-turn potentiometer Ambient light immunity Anti-sunlight interference up to 10,000 lux; incandescent interference up to 30,000 lux Operating temperature -25 to 55 deg C Storage temperature -25 to 70 deg C Protection and certification IP67, CE Material Nickel copper alloy housing with PMMA filter SKU variants Lanbao-PSM-TM20DPB, Lanbao-PSM-TM20DNB Board Layout & Label Guide Optical face - Front sensing window for through beam; keep it clean, aligned, and protected from impact. M18 threaded body - Mounts through a bracket or panel using M18 nuts; avoid excessive torque. Power indicator - Green LED confirms power and stable operating state during setup. Output indicator - Yellow LED shows switching state, short-circuit, or overload reference condition. Sensitivity area - Single-turn potentiometer; adjust only after the sensor is mounted in the final position. 2 m PVC cable - Fixed cable output for direct cabinet wiring; provide strain relief near moving equipment. Brown lead - Connect to the positive 10-30 VDC supply in typical industrial wiring. Blue lead - Connect to 0 VDC common and share reference with the input module. Black lead - Main switching output to PLC, relay interface, or protected digital input. White lead - NO/NC mode reference; Lanbao documentation specifies positive or floating for NO mode and negative for NC mode. Installation note - Through-beam sensing gives strong switching margin when the object fully interrupts the optical path. Packing List 1 x Lanbao PSM-TM emitter and receiver sensor set M18 nut set for emitter and receiver plus instruction manual reference Current store bundle contents may vary by SKU and warehouse batch FAQ Q: What is the Lanbao PSM-TM used for? A: It is used for industrial object detection in conveyors, packaging machines, fixtures, handling systems, and automated inspection stations. Q: What sensing mode does this model use? A: This model uses through beam sensing with 20 m rated distance and Infrared light, 850 nm. Q: Can it connect to a PLC? A: Yes. Use a PLC digital input module that matches the selected NPN or PNP output and the 10-30 VDC supply system. Q: What is the difference between NPN and PNP variants? A: NPN variants sink current to the input common, while PNP variants source current to the input. Choose the type required by the controller input card. Q: Is the sensor suitable for harsh equipment areas? A: It has IP67 protection and CE certification, but the full installation still depends on cable sealing, connector tightening, mounting direction, and enclosure design. Q: How is NO or NC mode selected? A: Lanbao documentation uses the white wire as the NO/NC mode reference. Follow the wiring diagram for the exact variant being installed. Q: Why does the output switch unreliably? A: Check supply voltage, NPN or PNP wiring, indicator status, target position, and alignment; the emitter and receiver must be aligned across the detection path. Q: Should I choose cable or M12 connector? A: Choose the cable version when fixed wiring is acceptable and the sensor will not be removed frequently.
