软启动器每相都是单相可控硅的反并联，降压限流3-5倍的启动电流，启动方式可选，检测保护也算完善，启动完备要切换旁路接触器；变频器才是真正意义上的软启动器，变频器的启动也才是正真意义上的平滑。
Soft starter each phase are single-phase thyristor anti parallel, the starting current limiting buck 3-5 times, starting mode is optional, perfect detection and protection, start to complete switching bypass contactor; inverter is the soft starter in the true sense, the inverter start is the true sense of the smooth.
软启动器维修的常见9类故障：
9 common faults of soft starter maintenance:
1、软启动器维修故障-F 01(瞬停)：
1, soft starter Maintenance Fault -F 01 (instantaneous stop):
泛起此故障是接线端子7和10开路了，只要导线把接线端子7和10短接起来就可解决。引起此故障的原因一般是因为外部控制接线有误而导致的，假如用户不是特别需要外控的话，我们可以告诉用户只需把软起内部功能代号“9”(控制方式)参数设置成“1”(键盘控制)，就可以避免此故障。
The fault is that the wiring terminals 7 and 10 open up, as long as the wiring of the terminal 7 and 10 short connection can be solved. The cause of this failure is caused by the external control wiring error, if the user is not particularly need to control it, we can tell the users only need to put the soft internal function code "9" (control) parameter is set to "1" (keyboard control), you can avoid this fault.
2、软启动器维修故障-F 02(起动时间过长)：
2, soft starter Maintenance Fault -F 02 (starting time is too long):
泛起此故障是软起动器的限流值设置得太低而使得软起动器的起动时间过长，在这种情况下，我们可以把软起内部的功能代码“4”(限制起动电流)的参数设置高些，可设置到1.5~2.0倍，必需要留意的是电机功率大小与软起动器的功率大小是否匹配，假如不匹配，在相差很大的情况下，野蛮的把参数设置到4~5倍，起动运行一段时间后会因电流过大而烧坏软起内部的硅模块或是可控硅。
This fault is a soft starter on the current limiting value is set too low and the soft starter starting time is too long, in this case, we can put the soft internal function code "4" (starting current) to set the parameters of high, can be set to 1.5~2.0 times, will need to pay attention to is the size of the power the size of motor power and soft starter are matched, if not match, in different circumstances, the savage the parameter is set to 4~5 times, starting operation after a period of time because the current is too large to burn out soft silicon or silicon controlled module.
3、软启动器维修故障-F 03(过热)：
3, soft starter Maintenance Fault -F 03 (overheating):
泛起此故障是因为软起动器在短时间内的起动次数过于频繁所致，我们应告诉用户在操纵软起时，起动次数每小时不要超过12次。
This fault is caused by the soft starter in a short time the starting frequency is too frequent, we should tell the user when the soft start, the number of starting per hour should not exceed 12 times.
