When frequency converter and PLC is at fault, automaticswitch to the original soft start work frequency power operation, ark to ensure the normal work of the compressor.
当变频器及PLC发生故障时，自动切换到原软启动柜工频电源运行，以保证压缩机的正常工作。
2
Automaticswitch, and simple operation procedure, can reduce power consumption.
自动开关，以及简便的操作程序，能够减少电能的消耗。
3
The WATSN series automatic transferring switch of power supply (ATS) and its structure features as well as main specifications were introduced, especially the operating principle of the controller.