How To Programme The Frequency Converter; Dc-Link Compensation Disabling - Danfoss AHF005 Design Manual

How to Programme the Freque...
7 How to Programme the
Frequency Converter

7.1.1 DC-link Compensation Disabling

The FC series include a feature which ensures that the output
voltage is independent of any voltage fluctuation in the DC
link, e.g. caused by fast fluctuation in the mains supply
voltage. In some cases this very dynamic compensation can
produce resonances in the DC link and should then be
disabled. Typical cases are where AHF005/010 is used on
supply grids with high short circuit ratio. Fluctuations can
often be recognized by increased acoustical noise and in
extreme cases by unintended tripping. To prevent resonances
in the DC-link, it is recommended to disable the dynamic DC-
link compensation by setting par. 14-51 to off.
7 7
14-51 DC Link Compensation
Option:
[0] Off
[1] On
*
42
AHF005/010 Design Guide
Function:
Disables DC Link Compensation.
Enables DC Link Compensation.
MG.80.C3.02 - VLT
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