Rockwell Automation 1336T Master/Slave Parallel AC Drv - Manual (Page 31)

1336 FORCE-5.19 – August, 2000
Startup 3-13
4. After the motor has reached set speed, using the Drive Enable,
disable the drive and measure the decaying motor BEMF as the
motor coasts down to zero speed. The phase must be the same
on the master and slave motor terminals. If not, rotate phases
until they are, and repeat steps 3 and 4.
5. Repeat steps 1 - 4 taking measurements on motor terminal
connections T2 to T3 and T22 to T33.
6. Disconnect Master and connect Slave matching any phase
changes from Step 4 above.
Slave - Transistor Diagnostics - Perform the following tests:
1. Disconnect the motor leads at the Master drive cabinet.
Connect the motor leads in the Slave drive cabinet.
2. Disconnect the enable jumper (J8, PLC Comm) for the Master
drive.
3. Set P256 in the Slave drive to bit 1, (Motor Phase Rotation
Test).
4. Give the Slave drive a start command.
5. Record values for P260 and P261. Stop the Slave drive.
Slave - Motor Phase Rotation - Perform the following tests:
1. Reconnect the enable jumper in the Master Drive. Set
Parameter 59 [Logic Option] bit 6 (Power Up Diag) to 0.
2. Give the Slave Drive a start command.
3. Set Parameter 256 = 2 (Motor Phase Rotation Test) in the
Master Drive. Give the Master Drive a start command.
4. The motor should start rotating from the Slave inverter. Check
that rotation is in the correct direction.
5. Re-Connect Master so that the Master and Slave motor
windings are connected.
Rotation Test with both inverters connected:
1. Connect the motor leads in both the Master and Slave cabinets.
2. Give the Slave drive a start command.
3. Set Parameter 256 = 2 (motor phase rotation) in Master. Give
the Master drive a start command.
4. Motor should now start turning using both inverters.
5. Stop the Motor. (Stop the Master drive first, then the Slave.)