SIEMENS
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Siemens NC 81.1 · 2017
Accessories
Direct spindle encoder
Direct spindle encoder
5
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Application
RS422 (TTL) incremental encoder
The optoelectronic incremental TTL encoders are tailored for the
use as direct spindle encoders in conjunction with the
SINUMERIK 808D CNCs.
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Design
The direct incremental spindle encoder features a Synchro
flange and can be attached to the machine with 3 clamp straps
and a spring disk coupling.
The encoder supply voltage of 5 V DC is provided by the
SINUMERIK 808D CNC.
The direct incremental spindle encoder delivers 1024
pulses per
revolution which are multiplied by the factor of 4 internally to
reach the precision level suitable for standard lathes and milling
machines.
Incremental encoders operate on the principle of optoelectronic
scanning of dividing disks with the transmitted light principle.
With an appropriate arrangement of the line pattern on the
dividing disk connected to the shaft and the fixed aperture, the
optoelectronic elements provide two trace signals A and B at
90° to one another, as well as a reference signal R. The encoder
electronics amplify these signals and convert them into different
output levels.
© Siemens AG 2016