Rockwell Automation 1336T Master/Slave Parallel AC Drv - Manual (Page 34)

1336 FORCE-5.19 – August, 2000
3-16 Startup
Motor Coupled to Mechanical
Load Test Prepare the motor for operation by running the following tests:
Verify that the accel (P125) and decel (P126) parameters are set to 10
seconds or greater and the ramp bypass is not enabled. Initiate a
normal start command from preset speed 1 (a small value, 5% - 10%
of base speed). Based on the machine manufacturer’s
recommendations, raise the speed of the driven equipment slowly
until 1/2 of rated gearin speed has been reached. Typically, steps of
5% - 10% of base speed are used.
Note: Some new machinery requires a specific“slow crawl” break-in
period before operation at normal speeds.
Verify that no mechanical problems are present as the motor and load
are accelerated. Based on the machine manufacturer’s
recommendations, continue to raise the section speed slowly until
gearin speed has been reached using steps of 5% - 10% base speed.
Verify that no mechanical problems are present as the motor and load
are accelerated. Stop the motor.
Velocity Loop Tuning: Use the following steps to measure the total
inertia. (Refer to the 1336 FORCE User manual startup section for
additional information).
1. Set Parameter 256 [Autotun Diag Sel] to a value of 128.
2. Start the Slave Drive followed by starting the Master Drive.
3. The measured inertia in seconds can be viewed in Parameter
46 (Total Inertia).
Update the velocity loop gains as follows:
1. Set Kf (P141) to a value of 1 (65535 du)
2. Enter the desired bandwidth in Parameter 43 [Vel Desired
BW]
3. Set Parameter 256 [Autotun Diag Sel] to a value of 256.
!
ATTENTION: Before you begin this test you MUST
confirm the following with the customer to prevent
possible machine or motor damage:
1. Motor is coupled to the load.
2. Motor is shimmed and aligned
3. Gearbox and coupling are lubricated
4. Section is lubricated
5. Any required air or water supplies are present
6. Section is ready to run
7. Ventilation for the motors is available
Install hard-wired E-Coast stop buttons at the motor, at
process sections and at the programming terminal.
Arrange for customer representatives equipped with
radio communications to watch driven equipment and
communicate with the drive tuner(s). Remove all
personnel not involved with the test from the area!