Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 371)

Component Definition and Maintenance 6-81
7000 “B” Frame 7000-UM150I-EN-P – June 2013
Drive Control Boards (cont.) 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, Drive Executive 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.