Pneumatic Logic & Controls - Parker Fluid Control - #9

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Text version of the page
Catalog PCC-4/USA
Flow Charts
Logic
Selection of a Control Technology
Machine or Sub-Machine with Majority of Pneumatic Actuators
Produced on a unit or semi-unit basis and working in a non-explosive environment, with separate control signals and logic processing only.
Selection Criteria
A
Volume of Processing Required
E + S = N° Inputs / Outputs Tc = Degree of Complexity = N° of Steps + N° of Sequences I + O
"Sequential"
Electrical
Programmable
Control with
Controller
Contacts
• Electro-Pneumatic
Structure
• Electrical and Electronic Sensors
Component Symbols
THRESHOLD NOT Function
TIME Function
OR
Function
is=a+b
Back-Pressure Sensor
(Booster Relay)
Air/Electric Interface
(Pressure Switch: Non Adjustable)
S = a
(Regenerated)
t-| J
YES
Function
HIE
i—«_
Not
Function (Inhibitor)
AND Function
;i[&pnd b
INVERTED TIME
Function
a7j & h"
a
b
\i' 0
Electric/Air Interface
(Pressure Switch: A
Non Adjustable)
S-,S =
a amplified
MEMORY Function
Amplifier Function
|Si ^S2 |S3 |S4 |S5 |SH
Modular Sequencer
iRi 1R2 1R3 1R4 iR^lRs
Parker Hannifin Corporation
Pneumatic Division Richland, Michigan www.parker.com/pneumatics
A3

pageCatalog pdf di En 2012-05-22-31