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Heidenhain has expanded its range of absolute rotary encoders with devices that incorporate the SSI interface, including the 35-mm-diameter ECN 1013, EQN 1025, ROC 1013 and ROQ 1025 models. Able to measure absolute position in different machines and devices with limited installation space, these 1000-series encoders are suited for a variety of applications including antenna technology, driverless transport systems, logistics applications, machine building, medical technology and packaging machines.

In addition to an SSI standard resolution of 13 bits single-turn and 12 bits multi-turn, these encoders provide high-resolution position value through external interpolation of the 1-Vpp output signals. They also offer  512 signal periods per revolution, an extended power supply range from 4.75 to 30 V, and inputs for programming the direction of rotation and setting the zero position of the absolute position value.

The encoders are available in a 6-mm, blind-hollow-shaft version, which includes stator couplings for plane surfaces, or in a 4-mm, solid-shaft version with a synchro flange. Additional versions are equipped with the EnDat interface.