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电气符号对照表Aammeter电流表AVRautovoltageregulator自动电压调节器BUbrakeunit制动单元BZBuzzer蜂鸣器CCapacity电容CBcontrolbox控制箱COUCounter计数器CPcircuitprotector电路保护CRcontrolrelay控制继电器CScam-operatedswitch凸轮运行开关Ddiode二极管DBdynamicbrakingresistor动态制动电阻DGSdigitalswitch数字开关DP7segmentindicator七段指示器DSdoorswitch门开关ELBleakagebreaker漏电断路器Ffuse保险丝FANfan风扇FLfluorescentlamp日光灯FSfinestartINVinverter倒相器Kkeeprelay保持继电器KSkeyswitch按键开关LEDlightemissiondiode发光二极管LSlimitswitch限位开关MBmotorbreaker电机断路器MCmagneticcontactor磁性接触器MSmagneticswitch磁性开关NFBnofusebreaker无保险丝断路器NLneonlamp霓虹灯PBpushbuttonswitch按钮开关PBLilluminatingPB发光按钮PLpilotlamp先导灯PRphotocellsensor光电池传感器PTrevolvingwarninglamp旋转报警灯PXSproximityswitch接近开关Rcontrolrelay控制继电器rresistor电阻RINVvariableresistorforspeedchange变速用可变电阻SCoutlet出口SKsurgekiller浪涌消除SQsequencer时序SSselectswitch选择开关STsignaltower信号塔THthermalrelay热继电器TLon-delaytimer延时开定时器TRtransformer变压器TStoggleswitch拨动开关TWweeklytimer周计时器VRvaristor变阻器Xpowerrelay电源继电器ZDzenerdiode期纳二极管MDtouchpanel触摸屏ESESmotorcontrollerES电机控制器G7TCI/OrelayterminalI/O继电器端子JTCjunctionconnector接点