136 Maintenance
the drive for maintenance before you start the work.
2. Switch off all miniature circuit breakers in the control compartment.
3. Undo the fastening screw and remove the battery (see A in figure Replacement of
BCU components above).
4. Insert the new battery according to the figure Replacement of BCU components.
5. Set the real-time clock.
6. When the work is completed the drive can be started up again. See Chapter
Operation, Energizing and starting the drive.
7. Dispose the old battery according to local disposal rules and applicable laws.
High voltage divider board
To locate the high voltage divider board see figure Control compartment with open swing
frame on page 33.
Procedure:
1. Stop, de-energize and ground the drive following the steps in section Shutting down
the drive for maintenance before you start the work.
2. Switch off all miniature circuit breakers in the control compartment.
3. Loosen the cable connection at the board to be removed.
4. Hold the divider board and remove the two fixation screws.
5. Install the replacement divider board in reverse order of removal.
6. When the work is completed, the drive can be started up again. See Chapter
Operation, Energizing and starting the drive.
CVMI2 board
To locate the CVMI2 board, see figure Terminal compartment with cover plate removed on
page 28.
Procedure:
1. Stop, de-energize and ground the drive following the steps in section Shutting down
the drive for maintenance before you start the work.
2. Switch off all miniature circuit breakers in the control compartment.
3. Unplug the fiber optic link (A1, A8), the power supply connector (X201) and the signal
connectors (X203, X204, X205, X206, X207,).
4. Loosen the 4 fixation screws and remove the board.
5. Install new CVMI2 board reconnect in reverse order of removal.
6. When the work is completed the drive can be started up again. See Chapter
Operation, Energizing and starting the drive.
Control hub
To locate the control hub see figure Inverter unit (drive type 11R6) on page 30.
Procedure:
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