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F-5GFK-0804B Appendix F Programming Applications
Application #4: Industrial “Starting Circuit”
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 |
| +––| |––+
|