Sick
Sick VTF18-3N5740 Photoelectric Proximity Sensor NPN
Photoelectric proximity sensor detects objects up to 45 mm with NPN dark-switching output and IP67-rated cylindrical housing
- Photoelectric sensor detects objects up to 50 mm
- Infrared LED provides reliable non-contact sensing
- NPN dark-switching output integrates with PLC systems
- IP67 enclosure withstands dust and water ingress
- Operates from -25 °C to +70 °C
Industrial proximity sensor
The Sick VTF18-3N5740 is a cylindrical photoelectric proximity sensor with an M12 connector. It delivers an NPN dark-switching output for presence detection on automated production lines and packaging equipment. The housing measures 78 mm in diameter and carries an IP67 enclosure rating for wet or dusty environments.
Potentiometer adjustment
A built-in potentiometer lets technicians set the exact switching point between 0 mm and 45 mm without extra tools. Infrared LED illumination provides consistent detection across the range while the 2 ms response time keeps pace with high-speed conveyors. The four-pin M12 plug simplifies wiring in standard fieldbus installations.
10 to 30 V DC supply
The sensor operates from 10 V DC to 30 V DC with a maximum 30 mA draw, so it integrates directly into common 24 V control cabinets. Ambient temperature tolerance spans –25 °C to +70 °C for unheated factory floors or outdoor machinery. It is not suited for applications requiring sensing distances beyond 50 mm or analogue output signals.
Highlights
- Photoelectric sensor detects objects up to 50 mm
- Infrared LED provides reliable non-contact sensing
- NPN dark-switching output integrates with PLC systems
- IP67 enclosure withstands dust and water ingress
- Operates from -25 °C to +70 °C
Specifications
| Brand | Sick |
|---|---|
| Model | SICK VTF18-3N5740 |
Questions about this item
Will the potentiometer or the M12 connector need periodic replacement?
The sensor uses a potentiometer for adjustment and a 4-pin M12 male connector; both are solid-state with no moving contacts, so no scheduled replacement is required.
What limits continuous operation — the 2 ms response time or the 70 °C temperature ceiling?
The ambient operating limit of +70 °C is the first constraint; the 2 ms response time does not degrade with sustained use.
How much heat does the NPN output generate when powered at 30 V DC all day?
At 30 V DC the sensor draws 30 mA; the IP67-rated plastic housing passively dissipates this low power without active cooling.
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