DIO232
DIO232
DIO232
拖一带隔离自动旁路柜是由三个真空接触器KM1、KM2、KM3和两个刀闸QS1、QS2组成。变频器输出真空接触器KM2和工频真空接触器KM3互锁,完全能够保证变频调速系统安全运行。刀闸QS1、QS2无机械闭锁功能,只是在检修时由手动断开以形成明显的断开点,确保工作人员的安全,在工频和变频运行状况下均处于闭合状态; 1)在变频运行状况下,KM1、KM2闭合,KM3断开。 如需自动切换至工频运行时,变频器系统先发自由停车命令,再由电气控制依次断开KM1、KM2,然后电气控制闭合KM3,使电机切换至工频侧,使电机工频运行; 2)在工频旁路运行状况下,KM3闭合,KM1、KM2断开。 如需自动切换至变频运行时,先闭合KM1,待变频器到就绪状态后,断开KM3,闭合KM2,使电机切换至变频侧,电机投入变频运行。 3.2控制模式 GD5000系列矢量型高压变频器控制系统采用DSP+FPGA+ARM三核模式,内部自带PID调节器,VF控制、矢量化的VF控制、有PG的矢量控制、无PG的矢量控制四种控制模式可选。系统反应速度快,抗干扰能力强。控制柜门设置就地/远程一键转换开关。就地控制通过10.4寸触摸屏交互式人机界面可实现各种运行参数的显示,对变频器的各种操作以及运行和故障情况的实时记录;远程控制可通过DCS、上位机或操作箱实现对变频器的操作和监控。标准配置为硬接线和MODBUS-RS485通讯,可以选配Profibus-DP,以太网或现场总线通讯。
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