User Manual EM303B General Purpose Inverter FC-20 is for setting the upper limit of overvoltage protection. The default is 380*1.414*128%=687VDC. Users do not need to adjust the value on general conditions. FC-22 and FC-23 are the auto-regulation parameters of internal overvoltage protection. They are used for after-sales regulation. The defaults can meet most of application needs. 8.13.16 Fault Retry 8.13.17 Whether Fault Retry Is Permitted and Retry Times FC-24 ones place=0 If inverter trips fault in running process, it needs manual reset instead of auto-reset. FC-24 ones place=1/2/3 If inverter trips fault in running process, output will stop.
It will reset fault after the fault is cleared, and it will restart and run for 1/2/3 times. The time for inverter running without fault exceeds no fault timelag (F1-26). Fault retry times reset the setting value of F1-24 ones place. If fault retry times exceeds 1/2/3 times, fault still occurs, then there is no auto-reset. FC-24 ones place=4 If inverter trips fault in running process, output will stop. After fault is cleared, inverter will reset fault automatically, and start again until resuming normal working status. 1. The start-up feature has to be taken into consideration in applications.
Fault retry cannot be applied to the applications as start-up with load, or it has to alarm immediately if the inverter has no output. 2. During the interval of auto-reset, inverter blocks PWM output and motor will coast to stop. 8.13.18 External Output at Fault Retry FC-24 tens place=0 During fault retry, fault output terminal and fault relay are off. FC-24 tens place=1 During fault retry, fault output terminal and fault relay will be on. 8.13.19 Fault Retry Timelag FC-25 is for controlling fault retry time-lag. Fault retry timelag refers to the time taken for 153 No. Function Range Unit Default Type Fault Retry Control Ones place: Fault retry times 0: Fault retry prohibited 1~3:
Fault retry for 1, 2, and 3 times 4: Unlimited fault retry Tens place: In fault retry, fault output terminals will be 0: Off 1: On 00 〇 FC-24 FC-25 Fault Retry Timelag 0.01～30.00 S 0.50 〇 FC-26 No Fault Timelag 0.01～30.00 S 10.00 〇