Rockwell Automation 4100 REC Resolver to Encoder Converter Installation and Setup Manual - Manual (Page 38)

Publication 999-126 - February 1996
Setup 31
1. While still in the Enter Setups window, select Tuning Complete,
Save Data/Update Diagram.
2. Select Execute. The diagram updates and the Do Setups window
disappears.
3. Select Exit Online. The Online Manager window disappears.
Homing the Axis The motion controller executes a home command to determine the
absolute position of the resolver package. To execute the home axis
command:
1. Double click on the Home Axis block in your GML diagram.
2. Select Wait for Completion. An X appears in the check box.
3. Select Save. The Home Axis window disappears.
Important: Before you use any of the position information sent by
the REC, you have to home the axis because the home
command configures the REC for single resolver or dual
resolver package applications.
Important: When executing the homing procedure on a servo axis,
feedback is momentarily disabled then enabled again ( if
the error checking features do not detect an error) in the
motion controller. If the axis has stored energy or the
ability to move during the time feedback is disabled, you
have to apply a breaking mechanism to the axis before
you execute a homing routine.
Important: If the axis is not still when you home a dual resolver
package, the position information will be incorrect.
Depending on your application, a breaking mechanism
may be required to stabilize the axis before you execute a
home command in the motion controller.
Using a Resolver Package with a
Linear Axis If you installed and configured your system for a dual resolver
package, you can set the axis for linear positioning. When you define
the axis to be linear, the 256 turn dual resolver package’s internal
absolute travel range is:
-5 <travel<=251 turns
The motion controller uses a home command to determine the
absolute position of the axis. After a home command, the REC
incrementally reports any movements back to the motion controller.
This new information builds upon the absolute value obtained during
homing and can cause the position of the axis to exceed the range in
either direction. However, during an absolute home command, the
initial absolute position of the 256 turn dual resolver package can
only be obtained within the range above.