T-slot mounting and sensing constraints
The Omron EE-SX772R is a through-beam photoelectric sensor in a compact T-slot body, designed for detecting small opaque objects in tight spaces. It ships as a transmitter and receiver set with a 2 m prewired cable, bare-wire termination. Sensing distance is 5 mm maximum, and the minimum detectable object is 2 mm x 0.8 mm opaque — so it catches small parts like a passing actuator tab or a component on a vibratory feeder, but not transparent or translucent targets. The 0.17 ms response time and 3 kHz switching frequency mean it can count parts on a high-speed pick-and-place or detect edges on a fast-moving web without missing a beat.
Output, wiring, and environmental fit
Output is PNP (sourcing), dark-on switching mode — the output transistor turns on when the light path is blocked. Maximum load current is 50 mA, so it drives a PLC input directly without an interposing relay. Supply voltage range is 5-24V DC, making it compatible with both 5V logic-level systems and standard 24V industrial control panels. Body material is PBT, and overall dimensions are 12 mm deep x 12 mm wide x 31 mm high — it fits into a standard T-slot extrusion or a compact bracket without crowding adjacent sensors.