Specifications

Catalog PCC-2/USABasic FeaturesLogicModular SequencerIndexVirtually all production machines usingpneumatic actuators operate in adedicated and repeatable sequence orcycle. The purpose of any controlmethod is to insure that all steps of themachine’s cycle occur as intended.The sequencer constitutes the backboneof a Telepneumatic control circuit. Thesequencer’s poppet design provides longlife using only shop air.Since it is modular, the sequencer caneasily be configured to any applicationcycle requirement. Logic elements andsupporting relays provide for otherapplication needs such as safetyconditions, operating modes and timedelays.The Telepneumatic sequencereliminates the need for solenoidoperated valves.COMPOSITIONA sequencer is comprised of a Numberof step modules, each correspondingto a defined step in the machine’scycle according to the applicationrequirements.HeadModuleStepModuleDeviationModuleTailModuleLogicThe head / tail module peforms thefunction of locking the easily stackedstep modules to the 35 mm DIN railwhile also supplying connection to thestack as follows: (1) supply pressure,(2) starting condition and (3) generaland emergency resets. A deviation moduleis placed between step modules toprovide for variation to the normalsequence of events such as skips,repeats, multi line cycles and resets.STEP MODULEOutput SignalTest PointAt the heart of the sequencer, the stepmodule is the decision making elementthat will read the necessary inputs andprovide output commands as needed.The step module consists of the followingparts:• Input/output via 5/32" instant swivelswith test points• Visual indicator, defining status• Both on and off manual overrides• Step reference marking to assist insequence diagnostics• Stackable subbase with special internalpiping.AutomaticConnectionsBetweenStep ModulesInput SignalManual Override “On”Manual Override“Off”loop BVisual IndicatorStep ReferenceMarkingBRPA1 2 6 7BAloop APneumatic2Parker Hannifin CorporationPneumatic DivisionRichland, Michigan