Rotary encoders offer more than resolvers
A
Heidenhain (GB) product story
Edited by the Engineeringtalk editorial team
Mar 30, 2006
Heidenhain's new EQI 1100 series inductive rotary encoders feature compact dimensions.
In robotics and automation technology, rotary encoders or resolvers serve on servo drives as feedback systems for position and speed control.
An increasing number of applications require multiturn versions of absolute encoders that are low in cost and as sturdy as resolvers but with features beyond those that resolvers can provide.
The most important of these is a digital interface for transmitting high-resolution absolute position values.
These requirements can be fulfilled with Heidenhain's new EQI 1100 series inductive rotary encoders with compact dimensions.
The encoders are available as a single-turn version, the ECI 1116 with 65,536 measuring steps per resolution (16bit), or a multiturn version, the EQI 1128 with 4096 distinguishable revolutions (12bit).
The total resolution of the EQI 1128 is therefore 268,435,456 positions (28bit).
With an outside diameter of 38mm, the overall length - including the transmission - is only 28mm.
In their mating dimensions, the rotary encoders are compatible with the optical variants, the well proven ECN 1113 and EQN 1125.
The user can choose flexibly from among mechanically and electrically compatible rotary encoders from Heidenhain to fit specific applications.
The same also applies to the subsequent electronics and the connecting cables, as they all support the EnDat interface.
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