输送带机在启动时，电机的电流会比额定高5-6倍的，不但会影响电机的使用寿命而且消耗较多的电量.系统在设计时在电机选型上会留有一定的余量，电机的速度是固定不变，但在实际使用过程中，有时要以较低或者较高的速度运行，因此进行变频改造是非常有必要的。SAJ变频器是一种可实现电机软启动、通过改变输送带机工作频率达到节能调速的设备，而且能给设备提供过流、过压、过载等保护功能。

When the belt conveyor starts up, the current of the motor will be 5-6 times higher than the rated value, which will not only affect the service life of the motor, but also consume more electricity. The system will leave some margin in the selection of the motor in the design, and the speed of the motor isfixed,butinttangshan.71ix.cnqinhuangdao.71ix.cnzhangjiakou.71ix.cncangzhou.71ix.cnmiehuo.37ix.com.cn

runhuayou.89ix.comhe actual use process, sometimes it will run at a lower or higher speed, so it is very necessary to carry out frequency conversion transformation. . SAJ frequency converter is a kind of equipment which can realize the soft start of motor and achieve energy saving and speed regulation by changing the working frequency of conveyor belt. It can also provide over-current, over-voltage and over-load protection functions for equipment.