Rockwell Automation Allen-Bradley Bulletin 871FM inductive proximity sensors

The Allen-Bradley Bulletin 871FM miniature, metal, flat-pack, inductive proximity sensors from Rockwell Automation are rugged, smart sensors built for harsh environments. Enabled with IO-Link technology, the sensors deliver comprehensive diagnostic and parameter data to the controller over EtherNet/IP from the IO-Link master module. This capability is said to help minimise downtime and increase productivity. 


Unlike traditional, tubular proximity sensors, the fully shielded Bulletin 871FM sensors’ 20 x 32 x 8 mm and 30 x 52 x 14 mm stainless steel rectangular housings can be installed in low-profile, space-critical applications. The compact design and all stainless steel construction of the proximity sensors is optimal for sensing small parts in demanding environments.



The sensors are also available in welding models with sensing ranges up to 10 mm and Factor-1 equal sensing for different ferrous and nonferrous metals. Weld-immune models are equipped with an Allen-Bradley ToughCoat Finish coating to help prevent weld-slag build-up, making them suitable for extreme environments, particularly automotive welding applications. They are also suited to food and beverage processing plants, stamping, material handling and a wide variety of other sensing applications.



The sensors feature highly visible, bicolour status LEDs, margin indication for optimal set-up and auto detect NPN/PNP, and complementary NO and NC outputs. They are available with either 2 m cable or 0.2 m pigtail cable, with integral M12 Micro Quick Disconnect connectivity.