Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control - Manual (Page 387)

Component Definition and Maintenance 6-83
7000 “A” Frame 7000A-UM150F-EN-P –June 2013
Drive Control Board Replacement
Before replacing the DCB-L or the DCB-M, it is important to record all of
the programmed drive parameters and settings. Specifically, the
parameters, fault masks, fault descriptions, and PLC links are critical.
This information is stored in NVRAM on each, and as a result you may
lose your settings with a new board. The best method to record
parameters is to use the memory on the terminal. Other options include a
flashcard, HyperTerminal, the door-mounted printer, or DriveTools
TM to
record the parameters to a file. The printer and HyperTerminal options
allow you to print all of the drive setup information. Otherwise, recording
information by hand is the only option left. In the situation where a board
has failed, you probably will not be able to save parameters after the
failure. That is why it is important to save all parameters when you are
finished commissioning or servicing the drive. In this case you should
contact the customer to see if they have a copy of the last parameters, or
contact Product Support to check if they have a copy.
The DCB-L, DCB-M, and CIB are all connected together using solid plug
connections. This means that the best way to change any of the boards
without physically stressing the connections and boards is to remove all 3
from the drive and change the board externally.
Instructions to replace the Drive Control Boards
1. Record all drive setup information using any of the options above, if
possible.
2. Ensure that all medium voltage and control voltage power to the drive
is isolated and locked out.
3. Loosen the two metal tabs on the top and bottom right of the panel on
which the SCB-L and SCB-M are mounted. The panel is hinged on
the right side, and should swing open to allow access to the DCB-L,
DCB-M and CIB boards. There is no need to remove any connections
from the SCB.
4. Note and mark the location and orientation of all the ribbon cables,
plugs and connectors into the DCB-L, DCB-M and CIB. Use the
electrical drawing as a reference.
5. Using your static strap, disconnect the fiber optic cables from the
sheet metal by cutting the tie-wraps. The purpose is to create enough
slack to allow the FOI Boards to be moved slightly out of the way,
allowing access to remove the boards. Use great care when handling
Fiber Optics, as any damage can affect transmission capabilities.