Rockwell Automation GV3000/SE AC Bookshelf Drive Hardware Ref, Installation, and Troubleshooting - Manual (Page 71)

Troubleshooting the Drive 10-1
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10
Troubleshooting the Drive
This chapter describes how to troubleshoot the drive and the equipment that is
needed to do so. Also provided are replacement part lists and information on clearing
faults.
10.1 Test Equipment Needed To Troubleshoot
An isolated multimeter will be needed to measure DC bus voltage and to make
resistance checks. Note that dedicated troubleshooting test points are not provided.
10.2 Drive Alarms and Faults
The drive will display alarm and fault codes to assist in troubleshooting when a
problem develops during self-tuning or drive operation.
If an alarm condition occurs, the drive will continue to run and a 2- or 3-digit alarm
code will flash on the display.
If a fault occurs, the drive will coast-to-rest stop and a 2- or 3-digit fault code will flash
on the display.
Refer to the GV3000/SE Bookshelf Drive Software Start-Up and Reference manual for
more information on drive alarms and faults.
10.3 Verifying That DC Bus Capacitors Are Discharged
The drive’s DC bus capacitors retain hazardous voltages after input power has been
disconnected. Perform the following steps before touching any internal components:
Step 1. Disconnect, lock out, and tag all incoming power to the drive.
Step 2. Wait five minutes for the DC bus capacitors to discharge.
Step 3. 24 to 43 A drives only: Disconnect all wiring from the face of the drive. Then
remove the cover and the front panel.
Important: The cover is connected to the drive by the keypad/display cable. To
disconnect the cover, use the following procedure. Do not remove the
keypad/display.
!
ATTENTION: DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power, wait five
(5) minutes for the DC bus capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.