Automatic air-main charging and pressure control system for compressed air supplies

Transcription

1 Auomaic air-main charging and pressure conrol sysem for compressed air supplies Type PCS A module from he sysem -vacorol Swiching on-off a compressed air uni in a compressed air supply generally akes place wih an auomaic valve (ball-valve or buerfly valve) If air is released from he sored large-volume compressed air supply, and when he compressed air uni is acivaed, here is a considerable reducion of incoming pressure, because he volume flow of he compressed air uni doesn correspond o he acual compressed air requiremen. This siuaion can lead o overloading a he compressed air uni. Air-main charging sysems such as PCS ensure opimum running-up of compressed air supplies proecion for he compressed air servicing uni in case of overloading on-going operaion. Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

2 Plan layou PCS Pe max Auomaic valve Pe Compressed air uni Exernal swich on Pe Supply pressure Mains pressure in-pressure ino acuaor ball-valve or buerfly-valve posiion The elecro-pneumaic conrol uni PCS coordinaes he funcional sequence of he OPEN and/or CLOSE movemen of he cu-off valve, depending on he supply pressure of he compressed air servicing uni in he compressed air supply. Auomaic running-up & pressure guaranee are differeniaed according o heir ype of operaion: Type: PCS- -Q Type: PCS- -V auomaic pressure guaranee Secure Qualiy auomaic pressure guaranee Secure Supply. Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

3 Types of operaion PCS The auomaic air-main charging sysem proecs he compressed air servicing uni when here is oo low pressure in he mains supply (for insance due o leakages in he sysem, he sysem can be deflaed) Too low operaing pressures can arise when saring he saion and/or in he case of oo high air consumpion. In his case he valve closes (roary acuaor wih ball-valve or buerfly-valve). PCS- -Q Secure Qualiy The valve also closes in case of loss of volage and exising operaing pressure. In he case of loss of volage supply, here is a Manual Override for he air-main charging sysem. Secure compressed air qualiy Volage Pressure PCS 0 0 Closed 0 1 Closed 1 0 Closed 1 1 Open Volage: Pressure: 0 = no volage 1 = volage presen 0 = pending pressure is less PCS- -V Secure supply The air-main charging sysem remains open in case of volage loss and sill exising operaing pressure. Secure compressed air supply Volage Pressure DHS 0 0 Closed 0 1 Open 1 0 Closed 1 1 Open Pressure: is more han 1 = pending pressure Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

4 PCS- he elecro-pneumaic conrol uni The elecro-pneumaic conrol uni PCS is consruced in a specially developed cas-meal housing for implemening bar-vacorol soluions, and is mouned direcly ono he acuaor acubar. all funcion-relaed subassemblies are mouned in and around he housing: binary end posiion sensors Open or Closed valve block for swiching he roary acuaor acubar a circui board wih funcion conrol and he necessary connecing inerface an addiionally visible mechanical posiion indicaor The compac infeed erminal block is fron of he conrol uni and consiss of: pressure regulaor for supply o he acuaor conrol manomeer elecronic pressure swich conneced o he Version PCS- -Q - Secure Qualiy has an addiional mechanical emergency manual override. Acuaor conrol uni and infeed erminal block are compleely & mechanically conneced o he auomaic air-main charging sysem PCS. This auomaic air-main charging sysem PCS is insalled free of hoses o he roary acuaor acubar. The mechanical sandard inerface a he PCS guaranees connecion o all sandard roary acuaor wih inerface 80x30 and 130x30 according o VDI/VDE Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

5 PCS Operaing modes The auomaic air-main charging sysem PCS can be operaed in eiher conrol or regulaing mode. Conrol mode In conrol mode, acivaing of he acuaor or he valve akes place direcly dependen on he prese swiching poin. The acivaing funcion can ake place wih a hrole valve and pulsed addiionally. The pulse widh can be se a a consan pulse frequency of 1 Hz. Here we differeniae beween 2 operaing modes: Sepped filling Type S 1 sec max = 90 The acuaor and in urn he valve are opened sep-by-sep wih consan frequency and seleced pulse widh. Pressure filling Type S 1 sec max, The valve is opened and closed in pulses wih consan frequency and seleced pulse widh. max Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

6 Regulaing mode Operaion of he acuaor and he valve akes place in regulaing mode, and dependen on he prese pressure value a he pressure swich. Here he prese hyseresis deermines he qualiy of conrol. Here we differeniae beween 2 operaing modes: Sepped filling ype R Pe1o Acuaor + valve are opened sep-by-sep, depending on he prese pressure se value. Pe1u Pe Pe max Pressure filling ype R Pe min The valve is opened and closed in pulses, depending on he prese pressure se value. max The desired version for boh ypes of PCS is deermined a he jumper block on he circui board. This simple mehod of being able o swich over operaing modes enables opimum adapaion of he sysem o he acual condiions of he individual air-main. Advanageous combinaions of operaing mode are possible hrough process-specific seings of he digial pressure swich. Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)

7 Produc idenificaion PCS (Pressure Conrol Sysem) PCS - U - Q M Micro-swich M/ Inducive swich D Supply pressure 10 bar /16 bar Funcion Q= Qualiy V= Supply Version U= Universal E= ECO Descripion U= Universal 4 operaing modes E= ECO 1 operaing mode Noe The auomaic air-main charging sysem PCS-E is available exclusively wih he operaing mode 2-poin valve regulaion. Furhermore, he following insallaion & seing regulaions are valid: PCS-U/E.MvEv. Technical Daa Housing maerial: cas-aluminium Housing dimensions: LxWxD [mm] 180x90x75 mm Proecion grade: IP54 Supply volage: 24 VDC Elecrical connecion: erminal srip X2 inside housing eumaic por: P (ø 6 mm): operaing pressure (comp. air) Operaing medium: filered and dried air Supply pressure Pe o P: 3 o 16 bar Acuaing pressure : 2 o 8 bar Pulse widh range in 16 seps adjusable beween >0 o <1000 ms Ambien emperaure: - 10 C o + 50 C (under + 2 C consideraion for condiion of air) Technical changes and furher developmens reserved by Auf der Hohl 1 Tel. +49 (0) verrieb@bar-gmbh.de Daenberg Fax +49 (0)