F

Application #4: Industrial ªStarting Circuitº

This logic provides a sample starting circuit for an industrial application. Included in the circuit is a simulation of a time delay relay and an emergency stop feature. In your ap- plication other safety interlocks may need to be included in the logic. A typical ladder logic is shown below.

Rung 1

 

 

 

I2

I1

C5

C4

+±±/±±+±±+±±+±±±±±±±+±±/±±±±+±±±±±±+±±()±±

PB2

PB1

 

 

 

 

 

 

 

 

 

 

 

C4

 

 

+±± ±±+

 

 

 

 

 

 

Rung 2

 

 

 

 

C4

 

C5

ONTMR

C6

+±± ±±+±±/±±+±±±±±±±+±±+±±±±±±±+[R001 ]+±±( )±±

 

 

 

 

 

 

 

 

 

 

 

 

I2

 

 

+±±±±+±±±±±±±+±±±±±±±+±±±+±±±±±±±[00100]

 

PB2

 

 

 

 

 

 

 

C6

 

+±± ±±+

 

 

 

 

Rung 0003

 

 

I2

C6

C5

+±±/±±+±± ±±+±±±±±±±+±±±±±±±+±±±±±±±+±±( )±±

PB2

C5

+±± ±±+

 

 

GFK-0804B

Appendix F Programming Applications

F-5

Page 156
Image 156
GE GFK-0804B manual Application #4 Industrial ªStarting Circuitº