Chapter 5  Electrical-Pneumatic Control

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5-1 Electrical control element P193        

5-1-1 Electrical switch (Electrical Switch)   P194   

There are  three types of  switch contacts: “ a” contact, “ b” contact, and “ c” contact.

　

5-1-2 the Push-the Button Switch, PB   P 194 the       

5-1-3 the Toggle Switch,  TS)  P197 the 　           

             

Tilt (DIP) switch DIP switch              

　

5-1-4 Change Over Switch, SW  P198 the 　           

5-1-5　Pilot Lamp   P199 the  

Is generally more commonly used indicator color: (1) Red :indicates the machine is in operation;(2) Green :indicates the machine s condition;(3) White:Indicates power ;(4) yellow : warning indication, fault.           
　

https://hyauto.en.ec21.com/Pilot_lamp--557655_557717.html

     

5-1-6 Sensor     P199 　           

   The most commonly used sensors for sequence control

n 1.  Limit Switch (LS) .

n 2.  Photoelectric Switch (PHS) .

n 3.  Proximity Switch (PXS) .

n 4.  Pressure switch (PS)

　

5-1-7 Limit Switches (LS) P200 the              

         The limit switch has  NO normally open contact ( ie a contact ) , and NC normally closed contact (ie b contact ) and the common point (Com) . When the limit switch is not pressed, the Com point is connected to the NC contact. When pressed, the Com and NO contacts are closed.

                     

5-1-8 Micro Switch (MS) P202 the               

5-1-9 Photoelectric Switch (PHS) P202            

5-1-10 Proximity Switch (PXS)  the P205 the            

5-1-11 Pressure Switch (PS) P207            

5-1-12 No Fuse Breaker (NFB)   P207 the           

   

5-2  Electromagnetic Relay and Rlectromagnetic Contactor          P210   

 5-2-1　Principle of Electromagnetic Relay                        
　

           

Physical diagram of Electromagnetic Relay

5-2-4 Electromagnetic Magnetic Contactor (MC)  P216 the            

          

5-2-5 Thermal Relay (TH)  P218 the            

　

        

5-2-6  Magnetic switch (MS) the            

            

5-3 Solenoid Valve (SOL) P219              

5-4  Timer (T) P221              

  

5-5  COUNTER   P223            

5-6  Basic logic circuit with contacts P225  

(1) YES circuit ( Normal phase circuit )           
　

(2) NOT circuit ( Inverting circuit )  P226

(3) AND circuit ( Series circuit ) P226

(4) OR circuit ( Oarallel circuit )  P226

(5) Self-keep ( memory ) circuit  P22 7

(6) Interlocking ( Priority ) circuit  P227

5-7  Basic Electrical - Pneumatic Control Circuit P229            

5-7-1 Control the forward and backward movement of the pneumatic cylinder by manual button

 (1)  Design with single coil Solenoid valve  P229
　

(2) design with double coil solenoid valve P231 

5-7-2  Forward and backward movement of pneumatic cylinder controlled by timer  

(1)  Design with single coil solenoid valve P232 
　

(2) design with double coil solenoid valve  P236 

5-7-3 Automatic Forward and Backward Circuit of Pneumatic Cylinder ( Single Cycle )  

(1) Design with Single Coil Solenoid Valve  P237           
　

(2) design with double coil solenoid valve  p239 

5-8 Electrical - Pneumatic Application Circuit  P 242                

Example 5-1 Design the electrical - pneumatic circuit diagram based on the displacement time diagram:

Designed with single coil solenoid valve  P 243 

　

Join auxiliary status    P247

Example 5-2 Tries to design the electric - pneumatic circuit diagram based on the following displacement step diagram: P255 

　

design with single coil solenoid valve   

Designed with dual coil solenoid valve    P262   

Electrical - pneumatic control circuit design example   

GOTO Chapter 6 PLC Programmable Pneumatic Pressure Control   

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FIN