User Manual of EM730 Series Inverter Fig. 7-37 Schematic Diagram of FDT Detection output frequency detection FDT1” or “4: output frequency detection FDT2” and the inverter is As shown in Fig. 7- 37, when the multi-function output terminal or relay output is set to “3: running: 1.
If the hysteresis is positive 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 - hysteresis, output frequency detection), the output level of the corresponding function terminal will remain unchanged. 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 280