VFD-F (CURVE).cdr

VFD-F Series08 - 06 Speed Search Time Factory Setting: 0.5Settings 0.1~5.0 Sec Unit: 0.1 This parameter determines the delay time from fault (power loss, OV, OC or BB) recovery tostart to execute the function of speed search time.08 - 07 Maximum Speed Search Current Factory Setting: 110Settings 30~150% Unit: 1 This parameter determines maximum current of speed search. Maximum speed search current will have influence with synchronization attained time. Thegreater this parameter is set, the faster it will be synchronization. But if the parametersetting value is too great, it may occur over-loaded protection. If 08-04 is set to 01: when speed search is from top downward, output frequency issearched from master frequency command downward. Now output voltage and outputcurrent will be added from zero. When output current is equal to 08-07 setting value, ACdrive output current will retain in a fixed value and output frequency will keep on searchingfrom top downward. When output frequency and output voltage is overlapped with V/fsetting frequency, AC drive will judge that is synchronization attained and accelerates fromV/f curve to master frequency command.5 If 08-04 is set to 02: AC drive will accelerate according to V/f curve and won’t do any specialtreatment.Maximum allowablepower loss timeMax. AllowablePower Loss TimePowerInputOutputFrequency08-0508-04=01B.B. Time08-06Speed SearchSpeedSynchronizationDetection08-0508-04=02B.B.Time08-06OutputVoltageMomentary Power Loss OperationDELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 5-41