Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C-Frame) - ForGe Control - Manual (Page 187)

Rockwell Automation Publication 7000L-UM301D-EN-P - June 2014 187
Commissioning Chapter 4
Inspect Cabinets for Debris
Once the safety checks have been completed and the drive line-up has been
successfully isolated, inspect all cabinets in the drive line-up for foreign material
left behind during the installation. Ensure that no tools, hardware or wiring
debris have been left in the drive. Note that some electric components used
within the drive create magnetic fields that may attract metal shavings left behind
if drilling or metal cutting was required during the installation process. Ensure
that all metal shavings have been removed from the cabinet and take care not to
get shavings into the cabinets if drilling or cutting is required during drive
installation.
Protective Barriers
In confined spaces, it is common for the electricians responsible for the
installation to remove protective barriers to allow for more space within the
cabinets. Ensure that all protective barriers removed during the installation have
been re-installed. Failure to re-install a protective barrier may result in equipment
damage or personal injury.
Component Grounding
Verify that the drive and all its associated equipment have system power ground
cabling installed and that the cables are terminated at both ends. Power cable
shield grounds to be terminated at both ends. Ensure that all grounding hardware
is sufficiently torqued (refer to
Torque Requirements for Threaded Fasteners on
page 419 (Appendix B) ). All drive line-up components (Drives, Switcher,
Motors, Transformers and Reactors) must be grounded to the installations
ground grid.
In drive line-ups supplied with Isolation Transformers, it is important to leave the
secondary of the isolation transformer floating so the drive line-up can reference
system ground from the upstream distribution transformer. Failure to do so may
result in unreliable drive operation.