The Siemens 3RG7214-3EK00 is a SIMATIC PXO650 K80 diffuse sensor with background suppression, built for presence detection in automated lines. It operates on DC 10-36V and provides a sensing range of 0.2 to 1 meter with NPN output, configurable for light-on or dark-on operation. The housing measures 83x61x25 mm, terminates in a 4-pole M12 connector, and carries an IP67 rating for washdown environments. An integrated timer offers 0.1 to 10 second delay functions.
The 0.2-1 meter range with background suppression means the sensor ignores reflective objects beyond the set cutoff — critical for conveyor or pick-and-place applications where the background belt or fixture would otherwise trigger a false detection. The NPN output (sinking, 200 mA max) mates to standard PLC input modules that expect a current-sinking signal; verify your input card is NPN-compatible before wiring. The IP67 enclosure handles high-pressure washdown but not submersion; the M12 connector should be torqued to the manufacturer's spec to maintain the seal. The built-in timer (0.1-10 seconds) allows on-delay or off-delay without an external relay, saving a DIN-rail slot.
Verification notes for incoming inspection
Given the EOL status, counterfeits and relabeled parts are a real risk. On receipt, check the nameplate marking: the order code 3RG7214-3EK00 must be laser-engraved or permanently printed, not a stick-on label. Verify the M12 connector pins are gold-plated and the housing shows no evidence of rework (solvent residue, uneven seams). The IP67 gasket should be seated evenly around the lid. A quick functional test: apply 24 VDC, set the potentiometer to mid-range, and confirm the output switches when a white card is placed at 0.5 m and drops out at 1.1 m (background suppression cutoff).