User Manual EM303B General Purpose Inverter immediately. See Table 7-5 for the programming mode of acceleration/deceleration time terminal 1 and 2. Table 7-5 Programming Mode of Acceleration/Deceleration Time Terminals As shown in Table 7-5, acceleration/decelerationtime refers to acceleration time 1 and deceleration time 1 in regular operation mode without using acceleration/deceleration terminal. F3-21=0 The unit of acceleration/deceleration time is second. The acceleration/deceleration time can be set continuously in the range of 0.00 ～ 600.00 seconds. F3-21=1 The unit of acceleration/deceleration time is minute.
The acceleration/deceleration time can be set continuously in the range of 0.00 ～ 600.00 minutes. Before inverter starts, the motor may run in low speed or reverse. If inverter starts immediately at the moment, overcurrent may occur. In order to avoid such faults, please start DC brake to stop motor before inverter starts, and then the inverter runs to setting frequency as per setting direction. F3-22 Different setting values can define different DC brake torques at start. If F3-22≤30.00, the percentage base is the rated output voltage of inverter. While, the DC brake controls the DC voltage generated by motor windings.
If F3-22≥30.01, the percentage base is the rated output current of inverter. While, the DC brake controls the DC current generated by motor windings. If F3-22≤30.00, inverter will trip overcurrent fault in the process of DC brake. Please reduce the value of F3-22 or set F3-22 ＞ 30.00. F3-23 Set the DC brake time at start. Inverter runs immediately when the time is up. If F3-23=0.00, DC brake is disabled at start. ★ The DC brake process at start is as shown in Figure 7-10. The function is applicable to that one inverter drives multi-motors. 107 Acceleration/Deceleration Acceleration/Deceleration Acceleration Time/No. Deceleration Time Terminal 1 Time Terminal 2 Time/No.
OFF OFF 1 F0-09 1 F0-10 ON OFF 2 F3-15 2 F3-16 OFF ON 3 F3-17 3 F3-18 ON ON 4 F3-19 4 F3-20 No. Function Range Uni t Default Type Acceleration/Deceleration Time Unit 0: S 1: min 0 〇 F3-21 No. Function Range Unit Default Type DC Brake Proportion at Start 0.00～30.00, 30.01～250.00 % 100.00 〇 F3-22 F3-23 DC Brake Time at Start 0.00～30.00 S 0.00 〇