VLT
®
6000 HVAC Series
Programming
Description of choice:
Set the required time delay before trip and
setting the output.
483 Dynamic DC link compensation
(DC LINK COMP.)
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 and ask for the VLT 6000 HVAC Design Guide.
✭ = factory setting. () = display text [] = value for use in communication via serial communication port
MG.61.A5.02 - VLT is a registered Danfoss trademark
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