1.Two cooling fans and interior lighting shall be installed on the top of the frequency converter cabinet (the principle wiring is omitted).Every heat dissipation fan power about 120W(AC230V),The models and specifications are selected by the manufacturer2.when have a set VFD in Cabinet use X1 terminal,two set VFD or more in Cabinet 1#VFD use X1 terminal,2# VFD use X2 terminal,3 #VFD use X3 terminal3.The contents listed in the component table are the electrical components of each frequency converter. The corresponding terminal row of each frequency converter is the same.4.The design requires VFD motor and the cooling fan motor to be turned on and off at the same time.The inverter is controlled by DCS and inverter control Cabinet respectively.The two control modes are selected by the button in the frequency converter control Cabinet.DCS control of frequency converter and acquisition of all signals are completed by means of communication.5.The Communication signals inlude at least: Current feedback(AI)、speed feedback(AI)、Speed control(AO)、Drive(DO)、Fault reset