User Manual of A90 Series Inverter
237
2. If the hysteresis is negative and the |output frequency| is greater than the result of “output
frequency detection FDT1/2” (F15.21/F15.23), the corresponding function terminal will
output the active level; if the |output frequency| drops to less than the result of “output
frequency detection FDT1/2 (F15.21/F15.23) - FDT1/2 hysteresis (F15.22/F15.24)”, the
corresponding function terminal will output the inactive level; and if the |output frequency|
is within the range of (output frequency detection, output frequency detection - hysteresis,),
the output level of the corresponding function terminal will remain unchanged.
Function
code
Function code name
Parameter description
Unit
Default
setting
Attribute
F15.25
Options of analog level
detection ADT
0:AI1
1: AI2
0
○
F15.26
Analog level detection
ADT1
0.00-100.00
%
20.00
●
F15.27 ADT1 hysteresis
0.00 to F15.26 (valid
down in one direction)
%
5.00
●
F15.28
Analog level detection
ADT2
0.00-100.00
%
50.00
●
F15.29 ADT2 hysteresis
0.00 to F15.28 (valid
down in one direction)
%
5.00
●
The analog level detection function is used to detect and monitor the analog input of
the current selected F15.25 channel, and also perform internal operation and external alarm
monitoring. Two detection conditions can be set, but only one analog input channel can be
detected.
