Rockwell Automation 8510 Hi-Res Feedback Instructions - Manual

ALLEN-BRADLEY
Instructions
High Resolution Magnetic Feedback
for 8510 AC Spindle Drive System
(Cat. No. 8510SA-PGxxx)
Objective This publication provides the information you need to properly install and
use the High Resolution Magnetic Feedback option for the 8510 AC
Spindle Drive System.
Description The High Resolution Magnetic Feedback option is designed to provide
highly accurate position feedback information from a machine tool spindle
to the 8510 AC Spindle Drive for spindle orient or precision spindle
indexing.
The High Resolution Magnetic Feedback option consists of two parts:
1. Position Detecting Gear
2. Sensing Head.
The Position Detecting Gear has a pair of high precision ring gears that are
bolted together and designed to be mounted directly to the spindle shaft.
The primary gear has a very fine pitch and precision teeth that provide the
primary position information. Gears are available with 225 through 500
teeth. The tooth pitch is constant for all gears, so the diameter varies
directly with the number of teeth on the gear. The secondary gear has one
tooth and provides the reference marker information.
ATTENTION: The Position Detecting Gear is a precision
assembly that can be damaged by improper handling. It has been
manufactured to very precise specifications. To guard against
damage and possible replacement, do not drop this gear.
Additionally, the Position Detecting Gear assembly is supplied
with two gears that are factory aligned to give correctly phased A
and B plus marker channel outputs. To guard against misalign-
ment and/or damage, do not remove the screws that hold the
primary and secondary gears together. Special instruments are
required for proper alignment.
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