DNH DHVC5000 Series, Use Manual

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Fig.1-10 data input dialog box
Fig.1-11 Shows the frequency skipping settings in the speed regulation parameters. The
frequency skipping upper limit, frequency skipping lower limit, minimum frequency and
maximum frequency may be changed for a smooth transition of the variable frequency speed
regulation system at resonance point. When frequency skipping is disabled,running the motor and
observe its running state. If motor appears large oscillation at one certain frequency,then record
the current frequency. Set frequency skipping point of upper limit and lower limit, enable the
motor won’t run at the frequency of large oscillation.
Fig.1-11 Frequency Hopping Setting
Fig.1-12 shows the V/F curve settings in the speed regulation parameters (In this example the
control mode is V/F).