ABB ACS880-107

Capacitor failure is usually followed by damage to the unit and an input cable fuse
failure, or a fault trip. If you think that any capacitors in the drive have failed, contact
ABB.
￭
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, refer to Capacitor reforming instructions
(3BFE64059629 [English]).
Functional safety components
The mission time of functional safety components is 20 years which equals the time
during which failure rates of electronic components remain constant. This applies to
the components of the standard Safe torque off circuit as well as any modules, relays
and, typically, any other components that are part of functional safety circuits.
The expiry of mission time terminates the certification and SIL/PL classification of
the safety function. The following options exist:
• Renewal of the whole drive and all optional functional safety module(s) and
components.
• Renewal of the components in the safety function circuit. In practice, this is
economical only with larger drives that have replaceable circuit boards and other
components such as relays.
Note that some of the components may already have been renewed earlier, restarting
their mission time. The remaining mission time of the whole circuit is however
determined by its oldest component.
Contact your local ABB service representative for more information.
Control units
￭
Replacing the memory unit (ZCU or BCU control unit)
After replacing a control unit, you can keep the existing parameter settings by
transferring the memory unit from the defective control unit to the new control unit.
WARNING!
Obey the safety instructions given in ACS880 multidrives cabinets and
modules safety instructions (3AUA0000102301 [English]). If you ignore
the safety instructions, injury or death, or damage to the equipment
can occur.
If you are not a qualified electrical professional, do not do installation
or maintenance work.
WARNING!
Do not remove or insert the memory unit when the control unit is powered.
Maintenance 137