Maintenance 135
7. Insert the new ZMU and fasten the screw.
8. Install the new BCU in reverse order of removal.
9. When the work is completed the drive can be started up again. See Chapter
Operation, Energizing and starting the drive.
After power-up, the BCU scans the memory unit. If a different control program or
different parameter settings are detected, they are copied to the BCU. This can take
several minutes.
10. Contact ABB service as soon as possible to obtain a new license before the trial mode
expires.
Replacing the SD memory card
The SD card is used to record fault information for analysis. It can be removed while the
drive is running.
SD/SDHC flash memory type: maximum supported size 4 GB, CLASS 4, 6, 10.
To replace the SD memory card:
1. Check that the yellow LED is off (see D in the Replacement of BCU components
figure above).
Do not remove the SD card while the yellow LED is lit, which indicates that writing to
the SD card is in progress.
2. Undo the fastening screw of the clip covering the memory card and press the card to
remove it. For the card location, see C in the figure Replacement of BCU components
above.
3. Insert the new card in reverse order.
Replacing the real-time clock battery
The real-time clock battery must be replaced if the “BATT” LED is not illuminated when the
control unit is powered (see D in the Replacement of BCU components figure
Replacement of BCU components above).
Real-time clock battery type: BR2032:
• Temperature range -30 ... +80 °C (-22 ... 176 °F)
• Voltage 3 V
• Nominal capacity approx. 200 mAh
• To be replaced every 5 years
Procedure:
1. Stop, de-energize and ground the drive following the steps in section Shutting down
NOTICE
After a BCU or memory replacement, the license might not match the new hardware.
The drive can be operated with full functionality in trial mode for 30 days. If the drive is
not relicensed within this period, it will stop working after the trial period is over.
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