1747-L511参详
1747-L511参详
1747-L511参详
智能电机控制模块能够完成以下功能: 1)全压起动 如图,用这种方式起动时模块相当于一个开关,输入端电压直接加到电机上,时间为0.2s。 2)电压斜坡起动 如图,系统首先加一个电压us到电机上,用于克服静摩擦转矩之后,电压线性上升,从us增加到*大电压umax。此时,加到电动机端子上的电压等于电网输入电压。us由用户设定,可供用户选择的电压为 80v~300v。ts由用户设定,可以在1s~90s中选择。这种起动方式的特点是起动平稳,可减少起动电流对电网的冲击,同时大大减轻起动力矩对负载带来的机械振动。 3)电压阶跃起动 如图,这种起动方式就是加一个电压uk到电机上,电压uk保持不变,持续tk秒钟以后,电机起动结束,再把电网电压umax加到电机上。uk可由用户自己调整,其范围为100v~300v;tk也由用户自己调整,其范围为1s~90s。 4) 限流起动 如图,这种起动方式是由用户设定一电流值ik,在整个起动过程中,实际电流不超过设定值ik。ik由用户根据实际负载大小自己设定。ik的选择范围根据模块型号而定。我们这次演示的模块范围是0~350a。 限流起动可以使大惯性负载以*小电流被起动加速,可以用来设置电流上限,满足电网容量在有限场合的使用。这种起动方式特别适合于恒转矩负载。 5)软停车 如图6,与直接停车相比,加到电机上的电压不是立即降下来,而是由*高电压逐渐下降,经过时间tp后降为0v。其下降时间tp由用户设定,范围是0s~90s。这种软停车可以大大减少管道设备中液体的冲击。 6)自由停车 7)节能运行 对于大摩擦负载,由于所需起动电流大,需要功率较大的电动机,而正常负载所需运行负载力矩比电动机额定转矩小得多,这就导致电动机轻载运行。对于间隙性负载,维持大电流的工作时间占整个周期很小的一部分,这会导致轻载有功损耗浪费,使运行功率因数大大降低。智能电机控制模块自动调节输出电压,使电机工作在*佳效率工作区,达到节能目的。 8)保护功能 共有3种保护功能:过流、过热及缺相保护。 在起动或者运行过程中,无论出现哪种故障,模块都会自动切断电机,同时控制板上的数码管会闪烁显示故障原因,待排除故障后,按复位键即可恢复正常。
20AD034C3AYNANC0 14年 面价39800 1个
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