167
F7.27
FDT2 detection mode
0
~
1
0
0
:
speed preset value
1
:
speed detection value
F7.28
FDT2 level setting
0.00Hz
~【
F0.16
】
upper limit Freq.
25.00
F7.29
FDT2 lag
0.0
~
100.0
%
*
【
F7.28
】
4.0%
These above function codes
(
F7.24
~
F7.29
)
are supplementary instruction to NO.4, 5 function of function codes F7.18
~
F7.21. When output frequency of VFD exceeds preset value of PDF level, the effective signal is output (open collector
signal, low level after pulling up of resistance); when output frequency decrease to lower than FDT signal (preset value -
lag value), invalid signal is output(high impedance). As showed in the following figure.
Fig.F7-8 Frequency Level Detecting