Sick
SICK VL18-4P3640 Photoelectric retro-reflective sensor PNP
Photoelectric retro-reflective sensor detects objects up to 3.7 m with visible red LED, PNP output, M12 connector, IP67 housing
- Detects objects up to 3.7 m away with visible red LED
- Cylindrical M18 × 1 housing fits standard mounting threads
- PNP output with selectable light/dark switching via control cable
- IP67-rated plastic housing withstands –25 °C to +70 °C environments
- 250 Hz switching frequency and 2 ms response for fast automation
Industrial retro-reflective sensor
The SICK VL18-4P3640 is a cylindrical photoelectric sensor designed for object detection in automation and material-handling environments. It operates on a 10 V DC to 30 V DC supply and provides a PNP switching output with selectable light or dark switching via an L/D control cable. The housing uses PBT/PC plastic with a PMMA optic and carries an IP67 enclosure rating for dust and water resistance.
M18 mounting and M12 connectivity
The sensor threads into an M18 x 1 cutout and measures 78 mm in overall length, fitting standard sensor brackets without adapter plates. A 4-pin male M12 connector terminates the cable, allowing quick attachment to common fieldbus or I/O modules. The visible red LED emits an axial beam with a 2.8° dispersion, producing a 150 mm light spot at 3 m for reliable alignment on reflectors.
Low power draw and wide temperature range
Power consumption is 30 mA at the rated supply voltage, and the output stage delivers up to 100 mA with a 2 ms response time and 250 Hz switching frequency. Circuit protection covers reverse polarity, short-circuit, overload and inductive kickback. The unit weighs 100 g and operates from –25 °C to +70 °C, with UL file NMFT2.E175606 confirming compliance.
Highlights
- Detects objects up to 3.7 m away with visible red LED
- Cylindrical M18 × 1 housing fits standard mounting threads
- PNP output with selectable light/dark switching via control cable
- IP67-rated plastic housing withstands –25 °C to +70 °C environments
- 250 Hz switching frequency and 2 ms response for fast automation
Specifications
| Brand | SICK |
|---|---|
| Model | SICK VL18-4P3640 |
Questions about this item
What is the maximum sensing range before the sensor loses reliable detection?
The maximum sensing range is 0.05 m to 3.7 m, with a reliable sensing range up to 3 m using visible red light.
How much power does the sensor draw during continuous operation?
Power consumption is 30 mA at a supply voltage of 10 V DC to 30 V DC with ripple at 10 %.
Which connector and voltage supply must the installer provide for this sensor?
A male M12 4-pin connector and a 10 V DC to 30 V DC power supply are required for connection.
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