ABB ACS880-04F, Руководство по оборудованию, Страница: 114 / 172

114 Maintenance
Replacing the standard drive module
WARNING! Obey the safety instructions in chapter Safety instructions . If
you ignore them, injury or death, or damage to the equipment can occur.
1. Stop the drive and do the steps in section Precautions before electrical work on page
15 before you start the work.
2. Remove the clear plastic shrouds on the power cables and parts in front of the drive
module (if present).
3. Disconnect the power cables.
4. Disconnect the power supply, BGDR and fiber optic cables from the drive module.
5. To prevent the drive module from falling, attach its top lifting lugs with chains to the
cabinet frame.
6. Remove the screws that attach the drive module to the cabinet.
7. Lift the drive module carefully out of the cabinet with a lifting device preferably with
help from another person.
8. Install the new module in reverse order to the above.
Capacitors
The drive intermediate circuit employs several electrolytic capacitors. Their lifespan
depends on the operating time of the drive, loading and ambient temperature. The lifespan
of the capacitor can be prolonged by lowering the ambient temperature.
It is not possible to predict a capacitor failure. The capacitor failure is usually followed by
damage to the unit and an input cable fuse failure, or a fault trip. Contact ABB if a capacitor
failure is suspected. Replacements are available from ABB. Do not use other than ABB
specified spare parts.

Reforming the capacitors
If the drive module has been stored for a year or more, reform the capacitors. See page 34
for information on finding out the manufacturing date. For the reforming instructions, see
Converter modules with electrolytic DC capacitors in the DC link, capacitor reforming
instructions
(3BFE64059629 [English]).