Rotary Encoders

HEIDENHAIN (Schaumburg, IL) offers the ExN rotary encoders for Potentially Explosive Atmospheres (ATEX) that feature a 12-mm blind hollow shaft in a sturdy design with increased wall thickness. The encoders are resistant to shock up to 1500 m/s2 (for 2ms), and vibration up to 100 m/s2. The IP 66 encoders handle shaft speeds up to 6000 rpm in a temperature range from -20 °C to 60 °C. The encoders feature ASIC scanning technology, available with EnDat or SSI interfaces for improved signal generation and less interpolation error. The encoders are certified for operation in Zones 1 or 21 of equipment group II (above ground applications).