Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 28)

4-8 SA500 Diagnostics, Troubleshooting, and Start-Up Guidelines
4.7.4 Physically Inspecting the Motor
Carefully read and understand the instruction manual that describes your motor. Then
make the following motor inspection. Refer to section 4.7.1, What to Do After
Unexpected Test Results, for more information.:
Step 1. Disconnect and lockout all incoming line power and control power to the
drive.
Step 2. Check that the motor is installed according to the motor’s instruction manual.
Step 3. If possible, uncouple the motor from the driven machinery.
Step 4. Rotate the motor shaft by hand to check that the motor is free from any
binding or mechanical load problem.
Step 5. Check that no loose items such as shaft keys, couplings, etc., are present.
Step 6. Check all connections for tightness and proper insulation.
Step 7. Check that the interior of the motor is clean and dry.
4.7.5 Checking the Installation with Power Off
Perform the following tests to verify that:
• Correct power is being supplied to the drive
• Wiring has been done properly
• There are no grounds in the magnetic control circuits or rotating equipment
• All safety devices are in place and functional.
Step 1. If the drive is powered up, disconnect and lock out all incoming line power
and control power to the drive. Refer to section 4.7.1 for additional
information on measuring and discharging DC bus voltage.
If the drive is not under power, proceed to step 2.
Step 2. Visually check that the AC supply to the DC bus supply is of the correct
voltage and frequency and that the plant supply branch from which the drive
is to be operated is of sufficient ampacity to supply drive input current
requirements.
!
$77(17,21 %HIRUH VWDUWLQJ WKH PRWRU UHPRYH DOO XQXVHG VKDIW NH\V
DQG ORRVH URWDWLQJ SDUWV WR SUHYHQW WKHP IURPIO\LQJ RII 5HSODFH DOO FRYHUV
DQG SURWHFWLYH GHYLFHV )DLOXUH WR REVHUYH WKHVH SUHFDXWLRQV FRXOG UHVXOW
LQ GDPDJH WR HTXLSPHQW DQG ERGLO\ LQMXU\
!
$77(17,21
DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power from the
DC bus supply, wait five (5) minutes and then measure the voltage at the
POS and NEG terminals of the DC bus supply and each Power Module
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.