Rockwell Automation CS3000 V6.1 MMI FlexPak, GV 3000, Liqui-Flo - Manual (Page 45)

Tuning GV3000 and Liqui-Flo Vector Drives 5-3
Step 1. Verify Motor Data - The motor nameplate data parameter values are
displayed.
a. Enter new values as needed. Press Assign to write the values to the drive.
b. Press Continue when all values are correct.
Step 2. Measure Magnetizing Current - A message box with the magnetizing
current value is displayed.
a. Click No to use the displayed value (and skip to step 3) or click Yes to
measure the magnetizing current. If measure magnetizing current is
selected, the following message is displayed:
“The load must be uncoupled from the motor shaft to run this test. If the
load is not uncoupled, the test results may be incorrect. Select OK when
you are ready to run the test or Cancel to quit.”
b. Lock out and tag all power to the drive and its load.
c. Disconnect the load from the motor shaft.
d. Remove the lockout and reapply power to the drive.
e. Click OK. The following message is displayed:
“Warning:
When OK is selected, the motor will accelerate gradually to 90% of base
speed. The acceleration and deceleration times will be about 30 seconds.
Select OK to begin the test or Cancel to quit.”
f. Click OK to start the motor, accelerate to 90% of base speed, and
measure the magnetizing current.
g. When the measurement is complete, click OK to continue. (Note that, if the
self-tune fails, a message box containing an error message is displayed.)
Step 3. Calculate Torque and Flux gains - Torque and flux current gains are
calculated (using the magnetizing current value and motor nameplate data)
and are displayed.
Click Yes to write the displayed values to the drive, or click No if you do not
want the calculated torque and flux gains written to the drive.
Step 4. Measure Inertia - The following message is displayed:
“The load must be coupled to the motor shaft before running this test. If the
load is not coupled, the test results will be incorrect. Select OK when you are
ready to begin this test or Cancel to quit.”
a. Lock out and tag all power to the drive and its load.
b. Connect the load to the motor.
!
ATTENTION: The setting of parameters U.001 (Encoder PPR), U.002
(Motor Poles), U.003 (Motor Nameplate Base Frequency), U.005 (Motor
Nameplate RPM), and U.017 (Motor Top Speed) determines the motor
maximum speed. These parameters must be set by a qualified person
who understands the significance of setting them accurately. Failure to
observe this precaution could result in bodily injury.