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Circuiti di Comando Svelati: Pulsanti, selettori, relè, autoritenute, consensi, interblocchi, PLC, attuatori e diagnostica
Paperback
Series: S.E.I.S. - Professional Field Guides, Book 8
Publisher: Independently Published
Published: Aug 6 2026
Pages: 328
Weight: 1.26
Height: 0.69 Width: 7.00 Depth: 10.00
Language: Italian
Un circuito di comando non funziona. Il pulsante Start viene premuto, ma il contattore non si eccita. L'uscita PLC risulta attiva, ma l'attuatore resta fermo. Da dove deve iniziare una diagnosi corretta?
Circuiti di Comando Svelati è una guida operativa dedicata alla lettura, alla ricostruzione e alla diagnosi dei circuiti di comando delle macchine industriali.
Attraverso il metodo proprietario COMANDO - Contesto, Origine, Modo di funzionamento, Attuazione, Navigazione del circuito, Diagnostica, Output atteso, imparerai a trasformare una sequenza di contatti, rimandi e bobine in una funzione macchina comprensibile e verificabile.
Il libro approfondisce:
- alimentazioni ausiliarie e distribuzione 24 VDC;
- contatti NO e NC e stato normale dei dispositivi;
- logiche AND e OR;
- circuiti Start, Stop e autoritenuta;
- consensi e interblocchi elettrici e meccanici;
- relè, contattori e temporizzatori;
- selettori manuale/automatico e locale/remoto;
- comandi di motori ed elettrovalvole;
- PLC, uscite digitali e relè di interfaccia;
- inverter, servoazionamenti, HMI e I/O remoti;
- disturbi EMC e malfunzionamenti intermittenti;
- troubleshooting, FAT e controllo qualità .
Non troverai soltanto schemi da osservare. Troverai una procedura per stabilire:
- quale funzione deve essere eseguita;
- da dove arriva l'alimentazione del comando;
- quali consensi devono essere presenti;
- quale interblocco può impedire l'azione;
- quale bobina o uscita deve attivarsi;
- quale feedback deve confermare il risultato;
- dove effettuare la misura decisiva.
La guida comprende 26 capitoli tecnici, una checklist universale di lettura e diagnosi, una matrice guasto-causa-misura, esempi applicativi, 50 quiz con soluzioni ragionate, glossario operativo e bibliografia tecnica.
È rivolta a progettisti elettrici, manutentori industriali, tecnici service, quadristi, cablatori, collaudatori, programmatori PLC, studenti ITIS e ITS, formatori e professionisti dell'automazione.
È particolarmente utile a chi riconosce i componenti ma fatica ancora a seguire una funzione distribuita tra schema, quadro, PLC, HMI e macchina reale.
Al termine della lettura non dirai più soltanto:
Manca un consenso.
Sarai in grado di identificare quale consenso manca, in quale ramo si trova, quale stato dovrebbe avere e quale misura può confermare la causa.
Una guida pratica per passare dal simbolo alla logica, dalla logica alla misura e dalla misura alla diagnosi.
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