113Appropriate Settings PID,Preset frequency holding time or Preset output switchingthresholds Can avoid the inverter start initial feedback and instruction deviation limits andmake the PID regulator saturation,Can make the closed-loop regulating quickly into astable stage and no obvious overshoot or oscillation.After the PID operation,Frequency accelerates to PID preset frequency according toACC/DEC time,and run continuously at the frequency point until the output can not meetthe needs of F9.14 setting PID preset keep conditions, according to the PID outputoperation.As shown in the figure below:Fig.6-24 PID preset output diagramCode Name Setting RangeF9.16 Dormancy frequency 0.00~300.00【0.00Hz】F9.17 Dormancy detection time 0~2000S【10S】F9.18 Start-up threshold 0.0%~100.0%【80.0%】PID dormancy:When the system detects the PID feedback value higher than that ofPID frequency thresholds and maintain longer than PID after dormancy detectiontime,inverter will start deceleration according to the current set of deceleration