VFD Wiring aur Parameter Setting Kaise Karein? (100% Practical Guide) | Electrical Seekho

                                          

Hello Dosto! Electrical Seekho Team mein aapka swagat hai. Aaj kal har badi industrial site aur HVAC system (chillers, AHU, pumps) mein 3-phase motors ki speed control karne ke liye VFD ka use kiya jata hai. Ek achha electrician wahi hai jise VFD ki wiring aur uski programming (parameter setting) aati ho. Aaj hum ise aasan bhasha mein sikhenge.

 

                                                     

 

 

🔌 1. VFD Power Wiring (Main Supply) Power wiring bahut simple hoti hai. Isme hum main power VFD ko dete hain aur wahan se motor tak power bhejte hain:

• L1, L2, L3 (ya R, S, T): Yahan par humari Main 3-Phase power supply aayegi (Panel ke main breaker se).

• U, V, W: Ye VFD ka output terminal hota hai jahan se 3 wire nikal kar seedha 3-Phase Motor ke terminal box mein jayenge. (💡 Electrical Seekho Pro Tip: Heavy motors ki wiring ke liye hamesha proper load calculation karke achi quality ki cables (jaise DUCAB) aur branded VFD/breakers (jaise Schneider ya ABB) ka hi use karein taaki load padne par insulation failure ya fault na aaye.)

   

                                                 

   

  🕹️ 2. VFD Control Wiring (Switch aur Speed Control) VFD ko panel ke bahar se ON/OFF karne aur speed kam-zyada karne ke liye control wiring ki jati hai.

• DI1 / FWD (Forward): Agar motor ko seedha chalana hai, toh yahan ek selector switch ke through 'COM' terminal se wire lagayein.

• DI2 / REV (Reverse): Motor ko ulta (reverse) ghumane ke liye 'COM' se switch ke zariye yahan connection dein.

• 10V, AI1, GND (Potentiometer): Bahar se volume button (Potentiometer) lagakar speed control karne ke liye in teeno terminals par 3 wire lagaye jate hain.                                       

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⚙️ 3. Main Parameters (Setting Kaise Karein?) Wiring complete hone ke baad VFD ke display panel (Keypad) se motor ke hisaab se kuch zaroori setting (parameters) daalne padte hain:

• Acceleration Time (ACC): Motor ko 0 se full speed tak jane mein kitna time lagna chahiye. Ise normally 5 se 10 second set karte hain taaki starting current aur jhatka (jerk) kam rahe.

• Deceleration Time (DEC): Motor ko band (Stop) hone mein kitna time lagna chahiye. Badi motors mein ise 10-15 second rakhte hain.

• Maximum Frequency: Motor ki full speed kitni hogi. Normal standards ke hisaab se ise 50Hz par set kiya jata hai.

• Motor Data: VFD ki setting mein motor ki Nameplate details (kW, Voltage, Amps, RPM) daalni zaroori hai, taaki overload hone par VFD motor ko jalne se pehle hi trip kara de.

Safety Warning ⚠️: Control panel ke andar live power par kaam karte waqt hamesha safety gloves aur shoes pehnein. VFD ko band karne ke baad bhi uske capacitor mein charge reh sakta hai, isliye 5 minute ruk kar hi wiring kholiye!

Agar aapko is wiring guide se thodi bhi madad mili ho, toh is post ko apne electrician doston ke Whatsapp groups mein zaroor share karein. Site ke aise hi practical tips ke liye Electrical Seekho ke sath jude rahein!