VD120 Series Inverter User Manual Parameter Description
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121
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multi-function output DO output ON signal, and the frequency is lower than a certain frequency values
of the detection values, the DO output ON signal is cancelled.
The above parameters are used to set the detection value of output frequency, and cancel the lag
value of the output motion. The Fb-17 (Fb-19) is the percentage of lagging frequency relative to the
frequency detection values Fb- 6 (Fb-18). The diagram below for the FDT function.
FDT Lagged
value=Fb-
16*Fb-17 or
Fb-18*Fb-19
Time(t)
Output
frequency(Hz)
FDT Electrical
level
Frequency
reaching
detection signal
（
DO relay
）
ON
Time(t)
Fig 6-23 Schematic diagram of FDT electrical level
Fb-20
Frequency Reached
Detection Amplitude
0.0%~100.0% (max frequency)
0.0%
○
The running frequency of the inverter, in a certain range of target frequency, inverter multi-function
DO output ON signal.
This parameter is used to set the detection range of frequency reached, which is relative to the
percentage of the maximum frequency. The diagram below is the frequency reached.
ON
ON
Time(t)
Detection
range
Set
frequency
Output
frequency(Hz)
Frequency
reaching
detection signal
Fig 6-24 Schematic diagram of frequency reached detect amplitude
Summary of Contents for VD120 Series
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