Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 265)

Rockwell Automation Publication 7000-UM151E-EN-P - January 2013 265
Appendix
C
Snubber Testing
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. The following
instructions will assist the field engineers in quickly and accurately aligning the
deadbolt key interlock with its counterpart.
IMPORTANT This section is also available in the PowerFlex “B” Frame Commissioning
Guide; refer to that document for additional information on drive testing.
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 may exist
in the cabinet even with the circuit breaker in the off position.
Recommended practice is to disconnect or lock out control equipment
from power sources, and confirm discharge of stored energy in capacitors.
If it is necessary to work in the vicinity of energized equipment, the safety
related work practices of NFTA 70E, Electrical Safety requirements for
Employee Work places, must be followed.