Functional Details 44
1: Frequency reaching
When the inverter’s output frequency is approaching the set frequency within
certain range (which is defined by parameter [F1.17]), it outputs effective signals,
otherwise, it outputs void signals.
Port output Rsistor
Rsistor
[F[F11..117]7]
Frequency
Set frequency
Out Frequency
Out frequency
Time
Figure 6-9 Frequency reaching signal
2: Frequency level detection (FDT)
When the inverter’s output frequency exceeds FDT frequency level, after the set
delay time, it outputs effective signals. When the inverter’s output frequency is
lower than the FDT frequency level, after the same delay time, it outputs void
signals.
Output terminal
Ferquency
High
resister
Output frequency
Higgh
resistor
[F1.18]
FDT level
[F1.19]
T
[F1.19]
Figure 6-10 Frequency Level Detection Signal (FDT)
E550 Series Universal Low-Power Inverter
