The Siemens 3RG7640-0GB00 is a SIMATIC PXO210 M18S diffuse photoelectric sensor with energetic (long-range) straight optics. It operates on 10-30V DC, delivers a 500mm sensing range, and outputs NPN light-on switching up to 150mA. The 2-meter PUR cable with 3×0.34mm² conductors and IP67 rating make it suited for washdown or oily environments in packaging, material handling, and conveyor lines.
Key Ratings & Fit
The 500mm sensing range is the maximum for a clean white target under stated conditions; real-world range on dark or matte surfaces will be shorter. The NPN light-on output means the transistor turns on when the target is detected — verify your PLC input card sinks or sources accordingly. The 150mA load capacity covers most direct-to-relay or PLC input loads, but check your inrush if driving a contactor coil.