Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 25)

Installation and Start-Up Guidelines 4-5
Use the procedures that follow to locate any shipping damage to the drive, to verify
proper installation and field wiring, and to start the drive.
Recommended Start-Up Sequence
1. Physical inspection of equipment
2. Motor checks
3. Preliminary inspection with power off
4. Inspection with power on
5. I/O verification
Before attempting to perform this start-up procedure, you should be familiar with the
general arrangement and function of the drive equipment and should verify that it has
been installed and wired as described in the following documents, which are included
in the Instruction Book provided with your drive system: Wiring Diagrams (W/Ds),
Elementary Diagrams (W/Es), Panel Layout Diagrams (W/Ls), Operator's Station
Diagrams (W/Os), and Interconnection Diagrams (W/Is) if supplied.
4.7.1 What To Do After Unexpected Test Results
If it is not possible to obtain the correct meter reading or proper operation during any
of the tests or adjustment procedures described in the following sections, perform the
following steps:
Step 1. Stop the drive.
Step 2. Turn off and lock out all incoming power.
Step 3. Wait five minutes to allow the DC bus voltage to dissipate.
Step 4. Measure the voltage at the POS and NEG terminals on the DC bus supply
and each Power Module before working on any unit. Refer to figure 4.1.
When the DC bus potential is down to less than 5 volts, touch a 50 ohm,
50 W or larger resistor to each unit’s POS and NEG terminals for 20 seconds
to allow any remaining voltage to dissipate.
Remove the resistor and re-measure the DC bus potential to ensure the DC
bus capacitors are completely discharged.
!
$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.