User Manual of A90 Series Inverter 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.
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. 237 Function Default Function code name Parameter description Unit Attribute code setting 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 ●