Rockwell Automation Publication 7000-UM202H-EN-P - November 2023 25
Chapter 2
Power Component Definition and Maintenance
This section provides an overview of the control components and cabling of
your PowerFlex® 7000 ‘B’ frame drive. This section also details a number of
regular or recurring maintenance tasks that will keep your drive in peak
operating condition.
Figure 20
through Figure 26 identify the control components and cabling of
your drives. Where appropriate, separate diagrams and instructions are
available for both the heatsink and the heatpipe ‘B’ frame models.
For information regarding power wiring and cabling connections (as might be
necessary for routine maintenance), see the PowerFlex 7000 ‘B’ frame
installation manual, publication 7000-IN007
.
Control Power Off Tests Perform the following checks before applying control power to the drive.
Rockwell Automation recommends that you complete these checks in the
sequence they are presented here.
Interlocking
When the input contactor option is purchased, a key interlock is provided to
prevent access to the medium voltage compartments of the drive unless the
input isolation switch is locked in the open position.
Where the input switching device is provided by others, Rockwell Automation
will provide a key interlock on the medium voltage compartment of the drive,
and a matching interlock for installation by others on the upstream device. The
interlock shall be installed in a manner that ensures the power to the drive is
off and the drive is electrically isolated whenever the key is freed.
Although key interlocks shipped with all medium voltage equipment are
aligned in the factory, they often move out of position during shipping or are
often misaligned when the cabinet is set down on an uneven floor.
ATTENTION: Servicing energized industrial control equipment can be
hazardous. Severe injury or death can result from electrical shock,
burn, or unintended actuation of control equipment. Hazardous
voltages can exist in the cabinet even with the circuit breaker in the
off position. We recommend that you disconnect or lock out control
equipment from power sources, and confirm discharge of stored
energy in capacitors. If you must work in the vicinity of energized
equipment, the safety-related work practices of NFPA 70E, Standard
for Electrical Safety in the Workplace, must be followed.
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