4.8.2主控制器报警
当控制箱发出报警时,PLC只发出报警信号.电机保持原状态运行。此时可以根据需要选择是否重新转到工频 运行或继续维持运行。
4.8.3通讯故障报警
当触摸屏与控制箱通信不上或者触摸屏与PLC通信不上时.在触摸屏上显示故障状态。
49故障状态
4.9.1变压器柜风机故障及功率柜风机故障
电机处于调速运行状态.若变压器风机或功率柜风机故障.延时一段时间后,PLC将KM2、KM3断开.把变 频器切除.延时ns后将QF1得电吸合.把旁路接入.电机由变频运行转至工频运行。
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