Appendix D How to Use PLC Function

Example 10: Delay Circuit

 

X0

X0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TMR T10 K1000

 

 

 

 

 

 

 

 

 

 

 

 

 

T10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Y1

Y1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TB = 0.1 sec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 seconds

 

 

 

 

 

 

 

 

When input X0 is ON, output coil Y1 will be ON at the same time due to the corresponding normally close contact OFF makes timer T10 to be OFF. Output coil Y1 will be OFF after delaying 100 seconds (K1000*0.1 seconds =100 seconds) once input X0 is OFF and T10 is ON. Please refer to timing chart above.

Example 11: Output delay circuit, in the following example, the circuit is made up of two timers. No matter input X0 is ON or OFF, output Y4 will be delay.

X0

TMR T5 K50

T5 T6

Y4 Y4

Y4 X0

TMR T6 K30

Example12: Extend Timer Circuit

X0

T5

Y0

T6

5 seconds

3 seconds

X0

TMR T11 Kn1

T11

TMR T12 Kn2

T12

Y1

In this circuit, the total delay time from input X0 is close and output Y1 is ON= (n1+n2)* T. where T is clock period.

X0

n1* T

T11

n2* T

T12

Y1

(n1+n2)* T

D-18

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11

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