Rockwell Automation Publication 750-UM006C-EN-P - March 2022
173
Chapter
6
Troubleshooting
Electrical Safety
Considerations
The drive is meant to be disconnected and repaired after proper lock out / tag
out procedures have been employed.
ATTENTION:
To avoid electrical shock, open the appropriate upstream
protection (disconnect switch or branch circuit protection) before connecting
and disconnecting cables. To avoid an electric shock hazard, verify that the
voltage on the bus has entirely discharged before servicing.
IMPORTANT
For drives that were in storage and did not have voltage applied,
maintenance of the drive may be required. For drives that are stored under
2 years, there is no additional maintenance required. For storage greater
than 2 years, see Preventive Maintenance Checklist of Industrial Control and
Drive System Equipment, publication
for bus capacitor
reforming requirements and
Maintenance of Industrial Control Equipment
for more information.
ATTENTION:
The drive contains high voltage that takes time to discharge
after removal of the main power supply. Before working on the drive, isolate
the main power supply from line inputs (L1, L2, L3). Wait 3 minutes for the
discharge to reach minimal voltage levels. Failure to do so may result in
personal injury or death.
IMPORTANT
To do proper troubleshooting, you need to have the electrical schematics
available for your system.
IMPORTANT
This lock out / tag out is only for upstream power. During initial installation,
the drive does not have power. The breakers should be in the OFF position
when the unit arrives. Verify that all breakers are off before maintenance is
started. For more information, see the
section.
0V
0V
1
DC+ DC-
L1
L2 L3
O
I
