VLT® 7000 Booster
Programming
483 Dynamic DC link compensation
(DCLINKCOMP.)
Value:
Off
[0]
✭On
[1]
Function:
The frequency converter includes 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. The
benefit is a very steady torque on motor shaft (low
torque ripple) under most mains conditions.
Description of choice:
In some cases this dynamic compensation can
cause resonance’s in the DC link and should then
be disabled. Typical cases are where a line choke or
a passive harmonic filter (e.g. filters AHF005/010)
is mounted in the mains supply to the frequency
converter to suppress harmonics. Can also occur
on mains with low short circuit ratio.
500 - 566 Serial communication
Value:
All information concerning the use of RS 485 serial
interface is not included in this manual. Please
contact Danfoss for further information.
Please note that only the FC protocol is available
in the VLT 7000 Booster.
✭ = factory setting. () = display text [] = value for use in communication via serial communication port
MG.70.A1.02 - VLT is a registered Danfoss trademark
87
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General