Capacitors; Reforming The Capacitors; Control Units; Replacing The Memory Unit - ABB ACS880-104 Hardware Manual

Capacitors

The DC circuit of the power modules of the drive contain several electrolytic capacitors.
Their lifespan depends on the operating time of the drive, loading and ambient temperature.
Capacitor life can be prolonged by lowering the ambient temperature.
Capacitor failure is usually followed by damage to the unit and an input cable fuse failure,
or a fault trip. Contact ABB if capacitor failure is suspected. Replacements are available
from ABB. Do not use other than ABB specified spare parts. Contact an ABB service
representative for spare parts and repair services.
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Reforming the capacitors

The capacitors must be reformed if the drive has not been powered (either in storage or
unused) for a year or more. The manufacturing date is on the type designation label. For
information on reforming the capacitors, see Converter module capacitor reforming
instructions (3BFE64059629 [English]) in the ABB Library (https://library.abb.com/en).
If the drive module has been stored for one to three years, turn on the mains power for 30
minutes without load, then continue as usual.
If the drive module has been stored for less than a year, continue as usual.

Control units

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Replacing the memory unit

After replacing a control unit, you can retain the existing parameter settings by transferring
the memory unit from the defective control unit to the new control unit.
WARNING!
Do not remove or insert the memory unit when the control unit is powered.
1. Stop the drive and do the steps in section
you start the work.
2. Make sure that the control unit is not powered.
3. Undo the fastening screw and pull the memory unit out.
4. Install a memory unit in reverse order.
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Replacing the ZCU-14 control unit battery

1. Repeat the steps described in
Electrical safety precautions (page 144)
Electrical safety precautions (page
Maintenance 195
before
144).