User Manual EM303B General Purpose Inverter monocycle running time is up, pressing STOP RESET , external terminal stop, coast-to-stop command, and fault, the terminal shall be off first and on again later, and then the inverter can be started. F9-25=1 Inverter will run directly. If the start/stop control mode is in 2-wire sequence and the terminal is ready, inverter will run directly. (Do not need to confirm the status of F9-25, inverter can be started directly.) 8.11.12 Auxiliary Function F9-27 sets function of oscillation suppression gain. It enable s motor to lower the oscillation degree when oscillation happens.
(Enabled in open-loop V/F mode) Speed Search 8.11.13 Speed Search F9-28=0 Maximum frequency When inverter starts speed search, it will start from the maximum frequency. F9-28=1 Stop frequency When inverter starts speed search, it will start from the frequency when inverter stops. F9-28=2 Setting frequency When inverter starts speed search, it will start from50Hz. When F9-28=2, inverter will start speed search from the setting frequency of F9-26 Speed search current is the ratio relative to the inverter rated current. The smaller the current is, the smaller impact to the motor is, and the accuracy of speed search is high.
But if the setting value is too small, it may cause inaccurate speed search result and start failure. The larger the current is, the motor speed will not drop too much. Please increase the setting value of F9-18 when speed search on heavy load. Generally, speed search coefficient can take default. When searching speed is too fast and overvoltage fault occurs, please try to increase the setting value of F9-19. 144 No. Function Range Unit Default Type Cut-off Frequency of Oscillation Suppression 20~400 % 90 〇 F9-16 F9-27 Oscillation Suppression Gain 0～20000 300 ● No. Function Range Unit Default Type Speed Search Mode of Software 0: Maximum frequency 1: Stop frequency 2:
Setting frequency 0 〇 F9-28 No. Function Range Unit Default Type F9-26 Voltage Resume Time of Speed Search 0.00～5.00 S 0.30 ● No. Function Range Unit Default Type F9-18 Speed Search Current 0.30～1.50 0.60 〇 No. Function Range Unit Default Type F9-19 Speed Search Coefficient 1.00～1.30 1.05 〇