User Manual EM303B General Purpose Inverter Power Failure Control at Power-on 8.11.9 Non-Stop Control at Instantaneous Power Failure Non-stop function at instantaneous power failure is only applied to the occasions when a sudden grid power failure occurs but power resumes soon later. F9-17=0 : Disabled. If there was an instantaneous power failure in running, inverter trips fault and enters fault status, and motor is ramp-to-stop. F9-17=1 : Enabled. If there was an instantaneous power failure in running, inverter will remain DC bus voltage to keep motor running continuously by calculating ramp-to-stop time automatically based on load.
When power resumed in ramp-to-stop, inverter runs normally. F9-20 : The DC bus voltage of non-stop at instantaneouspower failure is taken the setting value of F9-20 as the target value for adjusting deceleration time. F9-21 ～ F9-23 are for calculating and adjusting the deceleration time of non-stop at instantaneouspower failure. PI regulation is adopted to ensure that inverter can run with proper DC bus voltage. Users can adjust PI parameters based on load. 8.11.10 Start Delay Time After Power-on F9-24 sets the waiting time of system initialization when inverter is power-on. If inverter is required to run immediately after power-on, it can be set as 0.
8.11.11 Command Control F9-25=0 Terminal shall be off first, and then on. If the start/stop control mode is in 2-wire sequence and the terminal is ready, when PLC 143 No. Function Range Unit Default Type Non-Stop Control Options at Instantaneous Power Failure 0: Disabled 1: Enabled 0 〇 F9-17 Control Voltage of Non-Stop at Instantaneous Power Failure 0~800 V 537 ● F9-20 Proportion Gain of Non-Stop at Instantaneous Power Failure 0.00~300.00 0.50 ● F9-21 Integral Time of Non-Stop at Instantaneous Power Failure 0.00~600.00 S 1.50 ● F9-22 Base Time ofNon-Stop at Instantaneous Power Failure 0.00~600.00 S 2.00 ● F9-23 No.
Function Range Unit Default Type Start Delay Time After Power-on 0.00 ～ 10.00 (The time for inverter to wait for the initial operation after power-on) S 1.00 ● F9-24 No. Function Range Unit Default Type Terminal Operation Command Control 0: Terminal shall be off first, and then on. 1: Inverter will run directly 1 〇 F9-25