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SICK EL4-P2638 Photoelectric Sensor
SICK EL4-P2638 Photoelectric Sensor
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Description:
The EL4-P2638 is a compact SICK M18 retro-reflective photoelectric sensor that operates on 10–30 V DC and provides a PNP switching output. It uses a red 660 nm LED and a retro-reflective sensing principle, designed to detect targets when used with a reflector, with a maximum range up to 4.8 m when paired with the PL80A reflector (0.1 m to 3 m typical without the reflector).
- Housing: M18, dimensions 23.8 mm × 46.7 mm × 33.6 mm
- Sensing method: Retro-reflective photoelectric, compatible with reflector PL80A
- Sensing range: 0.1 m to 3 m typical; up to 4.8 m with PL80A reflector
- Light source: Red LED, 660 nm
- Supply voltage: 10–30 V DC; ripple < 5 Vpp
- Current consumption: ~20 mA
- Output: PNP switching output, max 50 mA; light/dark operation selectable
- Switching frequency: 400 Hz
- Connection: M8, 4-pin
- Part number: 1047826; Manufacturer: SICK
It includes protective features noted in the datasheet, such as reverse-polarity protection on supply connections and protection against overcurrent/short-circuit on outputs. This sensor is well-suited for compact automation tasks requiring reliable non-contact detection of reflective targets on conveyors or packaging lines.
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