Emerson Control Techniques Epsilon Eb Series Reference Manual page 200

The motor may run away during this test. Make sure it is securely fastened and that there
is nothing connected to the motor shaft.
At a certain point in the test it will be necessary to manually rotate the motor through an
integral number of revolutions. This can only be done if the motor shaft and housing are
marked in some way so that the motor can be aligned to a specific position. A disk or pulley
can be installed during that portion of the test to make this alignment more precise.
There are four tests: Rotation test, Torque test, Commutation test and Velocity test. Each test
builds on the last. It is important to perform the tests in the order given.
Note
Do not attempt to perform a test if you have not been able to get the proceeding test to
work.
Rotation Test
This test verifies that the encoder has been correctly interfaced to the drive.
Figure 129: CW Rotation of the Motor
Note
This test assumes that you have completed "Step 6: Configuring the Drive" on page 287.
1. Power-up the drive but leave it disabled.
2. While online with the drive, select the Status tab. Find the Position Feedback parameter
and note its value.
3. Mark the motor shaft and the motor face. This is your reference starting point.
4. Manually rotate the motor CW one revolution as accurately as you can. Verify that the
Position Feedback increased by one revolution. This verifies that the A and B encoder
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
User Defined Motors
181