Rockwell Automation 1336 8A-48A Fiber Industry - Manual (Page 65)

4–9 Start-Up
ATTENTION: To avoid a hazard
of electric shock, verify that the
voltage on the bus capacitors has
discharged. Measure the DC bus
voltage at the + & – terminals of
TB1. The voltage must be zero.
!
Reconnect Motor
B. Reconnect motor leads & replace cover.
18. Check for Correct Motor Rotation.
ATTENTION: In the following
steps, rotation of the motor in an
undesired direction can occur. To
guard against possible equipment
damage, it is recommended that the
motor be disconnected from the load
before proceeding.
!
Apply Power to Drive
or
Verify Forward Rotation
Verify Frequency Command = 0
Slowly Increase Speed
Verify Direction of Rotation
A. Reapply power to the drive.
B. Verify that the frequency command is
at zero Hz. For further information,
refer to step 11.
C. Using the Direction LEDs, verify that
forward direction is selected.
D. Start the drive and slowly increase the
speed until the motor begins to turn.
Note the direction of motor rotation. If
the direction of rotation is as desired,
proceed to Step E.
If the direction of motor rotation is
incorrect, stop the drive and remove all
power. When the HIM Display is no
longer illuminated, remove the drive
cover. Verify that the bus voltage
measured at “DC +” & “DC –” of TB1
is zero (see Attention above).
Interchange any two of the three motor
leads at TB1 – U, V or W. Repeat Steps
A through D.
E. If encoder feedback is being used,
verify that the polarity (“+” or “–”) of
[Pulse/Enc Hertz] equals the polarity
of the actual drive output as shown on
the Status Display. If the polarities are
the same, go to step F.
If polarities are different, stop the
drive, remove all power. Reverse the
“A” & “A NOT” or “B” & “B NOT”
wiring. Repeat Steps A through D.
F. Stop the drive and replace drive cover.
At Speed
+5.00 Hz At Speed
+5.00 Hz
Polarity