135 / 218
CHAPTER 5
CIRCUIT
TECHNIQUE
134 Pneumatic symbols
136 Rules for designing circuits
138 Elementary circuits
141 Single or semi-automatic cycle
142 Continuous or afutomatic cycle
143 Elementary circuits
144 Literal and graphical representation of the movement of cylinders
146 Signals generated by limit switches
150 Principles of logic
152 The basic logic functions
153 An example of the application of basic logic functions
155 Use of logic functions YES and NOT
156 OR and AND achieved with (3/2-way) directional control valves
157 Memory valves
160 The timer
161 Cycle start command
162 Single/continuous cycle
163 Emergency command
165 Development of a sequence
166 Flow diagram and designing a pneumatic circuit
168 Movement of multiple cylinders
171 Identification of blocking signals
173 Techniques to eliminate blocking signals
192 Two-hand control unit
5
133
CAMOZZI
>
CIRCUIT TECHNIQUE