ABB ACS880-87LC-4000A/4021A-7, Руководство по оборудованию

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104 Maintenance
BCU control unit
WARNING! Only qualified electricians are allowed to do this work. Do
not remove or insert a memory unit when the converter is powered or
the control unit is powered from an external power source.
Read the complete safety instructions of the converter. If you ignore the instructions,
physical injury, death, or damage to the equipment can occur.
Disconnect the converter from the all power sources and make sure it is safe to start the
work. See the safety instructions.

Replacing the memory unit
The memory unit is located on the BCU control unit.
WARNING! Do not remove or insert the memory unit when the control unit is
powered.
See b in figure Replacement illustration on page 105 .
1. To remove the memory unit, undo the fastening screw and pull the memory unit out.
2. Insert the new memory unit and fasten the screw.

Replacing the real-time clock battery
Replace the real-time clock battery if the BATT LED is not illuminated when the control unit
is powered.
See a in figure Replacement illustration on page 105 .
1. Undo the fastening screw and remove the battery.
2. Insert the new battery according to figure Replacement illustration .
3. Dispose the old battery according to local disposal rules or applicable laws.
4. Set the real-time clock.

Replacing the SD/SDHC memory card
Note: Do not remove the SD card while the yellow WRITE LED is lit. Writing to the SD
card is in progress.
See c in figure Replacement illustration on page 105 .
1. Undo the fastening screw (Torx T10) of the clip covering the memory card and press
the card to remove it. For the card location, see the following figure.
2. Insert the new card in reverse order. Tightening torque for fastening screw is 0.7 N·m
(0.5 lbf·ft). Repeat the replacement procedure for other BCU control unit if needed.