Telemecanique Sensors
Telemecanique Sensors XU8M18MA230 18 mm Diffuse Photoelectric Sensor 24-240V AC/DC
An 18 mm cylindrical diffuse photoelectric sensor detects objects up to 120 mm away, operates on 24–240 V AC/DC, and includes a 2 m cable with NO solid-state output
- 18 mm cylindrical housing fits tight machine spaces
- 24–240 V AC/DC supply works with most industrial power rails
- 120 mm diffuse sensing range detects objects without a reflector
- Dark-on NO solid-state output switches cleanly for PLC inputs
- 2 m pre-wired cable simplifies installation and reduces wiring time
18 mm cylindrical diffuse sensor
The Telemecanique Sensors XU8M18MA230 is an 18 mm cylindrical photoelectric sensor that uses diffuse sensing to detect objects without a separate reflector. It operates on a wide 24 to 240 V AC/DC supply, making it suitable for machinery and automation systems where supply voltage varies.
Replaces sensors with narrower voltage range
This unit replaces diffuse sensors that only accept a single low-voltage DC rail, allowing consolidation of spares across 24 V control circuits and 230 V mains-fed panels. The jump is worth it when a plant mixes both supply types and needs a single part number for dark-on detection up to 120 mm.
Simple two-wire cable connection
The sensor terminates in a 2 m pre-wired cable with a normally-open solid-state relay output, so wiring is a direct series connection into the load. The main pitfall is exceeding the 120 mm sensing distance or mounting where background reflections cause false triggers, which the fixed diffuse optics cannot compensate for.
Highlights
- 18 mm cylindrical housing fits tight machine spaces
- 24–240 V AC/DC supply works with most industrial power rails
- 120 mm diffuse sensing range detects objects without a reflector
- Dark-on NO solid-state output switches cleanly for PLC inputs
- 2 m pre-wired cable simplifies installation and reduces wiring time
Specifications
| Brand | TELEMECANIQUE SENSORS |
|---|
Questions about this item
What size mounting hole does the 18 mm cylindrical body need?
The sensor has an 18 mm diameter body, so a matching 18 mm clearance hole is required for through-panel mounting.
How should the 2 m cable be terminated to avoid false triggers on the solid-state NO output?
Connect the two-wire cable in series with the load across the 24-240 V AC/DC supply; reversing polarity or wiring it as a three-wire device will prevent the dark-on output from switching.
When should the 120 mm sensing range be re-verified or the lens cleaned?
Re-check alignment and clean the lens whenever the sensor fails to detect a target at the rated 120 mm distance, as dust or vibration can shift the diffuse beam.
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