Programmable controller

(PLC) and its application of relay contactor control system is widely used in production for a long

time,but because of its complex mechanical contact more,wiring,High reliability,low power

consumption,and when the production process changes need to be redesigned 6v electric motor and control circuit,versatility and flexibility is poor,so can't satisfy increasingly The complicated and

changeable modern production process control requirements.And the programmable controller will relay contactor control combined with computer technology,the advantages of using "software Cheng "instead of the relay contactor control" hardware wiring ".When the system function need single phase induction motor to be changed,just change a few external connection,mainly by modifying the corresponding control procedures Can.Using PLC to replace the ordinary relay circuit to realize Y/Δ starter will be more convenient and reliable,to solve the above problems are also more easily.PLC (programmable Controller) is a kind of microcomputer technology as the core of the automatic control device,is superior to other control device of acmotortrading.blogspot.com many functions,such as:(1) high reliability and anti-interference ability Strong;Variable,(2) the control program can achieve flexible control;(3) control and processing function is perfect (analog input P output,PID control,arithmetic,etc.);(4) network and communication functions (configure the network adapter or can communication card and network or other communication controller),etc.When USES the PLC control ac asynchronous motor,it Are better able to realize logic control,process control and data communication,to achieve automatic control of a new level.