Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 24)

24 Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
Chapter 2 Drive Installation
• The room in which the equipment is located must be large enough to
accommodate the thermal losses of the equipment since air conditioning
may be required; the ambient temperature must not exceed that for which
the equipment is rated. The heat created by the drive is directly
proportional to the power of the motor being driven and the efficiency of
equipment within the room. If thermal load data is required contact the
Rockwell Automation Sales office.
• The area in which the drive is located should be free of radio frequency
interference such as encountered with some welding units. This may cause
erroneous fault conditions and shut down the drive.
• The equipment must be kept clean. Dust in the equipment decreases
system reliability and inhibits cooling.
• Power cable lengths to the motor are virtually unlimited due to the near
sinusoidal voltage and current waveforms. Unlike voltage source drives,
there are no capacitive coupling, dv/dt, or peak voltage issues that can
damage the motor insulation system. The topology utilized in the
PowerFlex 7000 medium voltage AC drive does not produce dv/dt or peak
voltage problems, and has been tested with motors located up to 15 km
from the drive.
• Only personnel familiar with the function of the drive should have access
to the equipment.
• The drive is designed for front access and should be installed with
adequate and safe clearance to allow for total door opening. The back of
the unit may be placed against a wall although some customers prefer back
access also.
Generator Note:
ATTENTION: An incorrectly applied or installed drive can result in component
damage or a reduction in product life. Ambient conditions not within the
specified ranges may result in malfunction of the drive.
ATTENTION: Verify that the load is not turning due to the process. A
freewheeling motor can generate voltage that will be back-fed to the
equipment being worked on.