ABB RCNA-01 Manuel d'utilisateur télécharger pdf (Page 390)

100

101

386 Diagnostics and maintenance

ACH550-01 User's Manual

Capacitors

Reforming

The drive DC link capacitors need to be reformed (re-aged) if the

drive has been non-operational for more than one year. Without

reforming capacitors may be damaged when the drive starts to

operate. It is therefore recommended to reform the capacitors

once a year. See page 16 for how to check the date of

manufacture from the serial number shown on the drive labels.

For information on reforming the capacitors, refer to Guide for

Capacitor Reforming in ACS50, ACS55, ACS150, ACS310,

ACS320, ACS350, ACS550 and ACH550 (3AFE68735190

[English]), available on the Internet (go to www.abb.com and

enter the code in the Search field).

Replacement

The drive intermediate circuit employs several electrolytic

capacitors. Capacitor life can be prolonged by lowering the

ambient temperature.

It is not possible to predict a capacitor failure. Capacitor failure is

usually followed by an input power fuse failure or a fault trip.

Contact ABB if capacitor failure is suspected (see page 441).

Replacements for frame sizes R5 and R6 are available from

ABB. Do not use other than ABB specified spare parts.

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ABB RCNA-01 Manuel d'utilisateur Page 390

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