Rotary Encoders provide alternative to resolvers.

Press Release Summary:

Rotary Encoders are available in singleturn version, ECI 1317 which counts 17 bits, 131,072 measuring steps per revolution; and multiturn EQI 1329 with 4096 distinguishable revolutions (12 bits). Units feature inductive scanning principle and EnDat interface. They are designed for servomotor and general applications.

Original Press Release:

HEIDENHAIN Presents New Low-priced Rotary Encoders as an Alternative to Resolvers

SCHAUMBURG, IL - (January 4, 2002) - With new, economically-priced inductive rotary encoders, HEIDENHAIN has expanded its product range for servomotor and general applications with lower accuracy requirements, which until now were mainly satisfied with resolvers.

Resolvers are known for their robustness, but they cannot fulfill the demands of drive technology for simpler commissioning, an electronic ID label and diagnostic functions. HEIDENHAIN's new inductive rotary encoders, on the other hand, with their inductive scanning principle and well-known EnDat interface, fulfill exactly these requirements, and are even superior to resolvers in terms of positioning accuracy, speed stability and control dynamics. The new competitive pricing will
make them a welcome alternative to resolvers.

These new rotary encoders from HEIDENHAIN are available in a singleturn version (ECI 1317) which counts 17 bits = 131,072 measuring steps per revolution, and a multiturn version (EQI 1329) with 4096 distinguishable revolutions (12 bits). The multiturn version is only 39 mm long.

These ECI/EQI rotary encoders are mechanically compatible with the optical variant, HEIDENHAIN's seasoned EQN 1325 model. The motor non-drive end shield and the electrical interface remain identical regardless of the choice between optical and inductive encoders, meaning that with them, the motor manufacturer can produce a large number of identical parts increasing overall
production and lowering production prices. The same also applies to the subsequent electronics and connecting cables.

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