Rockwell Automation 4100 REC Resolver to Encoder Converter Installation and Setup Manual - Manual (Page 37)

Publication 999-126 - February 1996
30 Setup
For Example: Assume the actual position of the absolute transducer
is 1 at the alignment point. After alignment, the home position (home
offset) variable equals -1. Therefore, the axis position is defined as 1
+ (-1) = 0. Assume the axis is moved one unit and the position of the
absolute transducer is now 2. If you execute a home command at this
point, the axis position is 2 + (-1) =1.
For dual resolver packages the alignment routine uses the home
position and a transparent parameter called Vernier Offset to calculate
the alignment position. The Home Position stores the master resolver
element position offset and Vernier Offset stores the vernier resolver
element offset.
2. Select Execute.
3. Move the axis to its minimum travel position. The alignment rou-
tine will define this position as zero.
4. Select OK to align the position to zero.
5. While the alignment routine is running, verify that you have
selected the proper absolute device (the absolute device you
selected shows up in the window that appears while the axis is
aligning).
6.
Updating the Diagram
Once the Alignment routine completes successfully, the resolver
offsets (Home Position and Vernier Offset) and axis specific
information gathered during on-line setups is stored in the motion
controller’s working memory. You must update your diagram to
include your latest changes.
To update your diagram:
If: Do this:
The Align Absolute Transducer
window appears Go to step 3
A GML Error window appears 1. Check your application program.
2. Check your REC installation
procedures.
If the transducer alignment: Do this:
Was successful 1. Select OK
2. Go to the
Updating the Diagram
section.
Was unsuccessful Check your GML diagram.