Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
| Parte del modello | Senso | Spiegazione dettagliata |
| VFD | Delta Inverter Identifier | Abbreviation for Variable Frequency Drive, the universal prefix for Delta’s industrial automation inverters. |
| 55 | Potenza motore applicabile | For 5.5kW (7.5HP) motori; this is the rated output power of the drive. |
| C | Codice serie | C2000/C2000+ Series – Delta high-performance general-purpose vector inverter, supporting induction motors and permanent magnet synchronous motors. |
| 43 | Classe di tensione & Phase | 4 = 3-phase 400V class (380~480V); 3 = 3-phase input (contro. 1 per monofase). |
| UN | Modalità di controllo & Caratteristiche | Supports Vector Control (FOC), Controllo della coppia (TRQ), high-performance algorithm, 200% starting torque at 0.5Hz. |
| -21 | Versione & Configurazione | Versione standard: unità di frenatura incorporata (selected power ratings), nessun filtro EMC integrato (external available), conformi agli standard internazionali. |
- Specifiche tecniche principali (Ufficiale 2026 Data)
| Categoria | Articolo | Valore | Note |
| Basic Specs | Potenza nominale | 5.5kW (7.5HP) | For 5.5kW 3-phase induction motors |
| Tensione in ingresso | 3-fase 380~480V (+10%/-20%) | 47~63Hz, ampio intervallo di tensione | |
| Corrente di uscita nominale | 12UN (servizio pesante) / 10.8UN (light duty) | Continuous operation in heavy-duty mode | |
| Gamma di frequenze di uscita | 0.1~600Hz | For both low‑ and high‑speed applications | |
| Controllare le prestazioni | Modalità di controllo | Vettore senza sensori, Closed-loop Vector, Controllo V/F | Switchable closed/open loop |
| Coppia di avviamento | 200% coppia nominale a 0,5 Hz | Ideal for heavy starting loads | |
| Capacità di sovraccarico | 150% for 60s; 200% for 3s | For shock loads | |
| Speed Accuracy | ±0.5% (open-loop) / ±0,02% (closed-loop) | High precision speed control | |
| Tempo di risposta della coppia | ≤10ms | Fast dynamic response | |
| Hardware | Grado di protezione | IP20 (cabinet mount) | A prova di dita; clean environment recommended |
| Raffreddamento | Forced air (removable fan) | Manutenzione facile, lunga durata | |
| Funzioni integrate | Unità di frenatura (≤7.5kW), PLC (5,000 passi) | Alta integrazione, meno parti esterne | |
| Comunicazione | RS-485 (ModBus RTU) standard | PROFINET/EtherNet/IP/CANopen optional | |
| Ambiente | Temp. operativa | -10~40°C (derate 40~50°C) | Declassare 1% per °C sopra i 40°C |
| Temp. di conservazione | -20~60°C | Avoid moisture & gas corrosivo | |
| Umidità | 5~95% (senza condensa) | Suitable for industrial environments |
III. Caratteristiche principali & Vantaggi
3.1 High‑Performance Control
Controllo vettoriale: Precise independent torque & speed control for complex loads.
Built-in PLC: 5,000-step logic programming for simple automation, reducing external PLC dependency.
Auto energy saving: Dynamically adjusts output voltage; saves 20~50% at light load.
Motor auto-tuning: Completes matching in <10S, simplifies commissioning.
3.2 Design ad alta affidabilità
Struttura modulare: Hot-swappable keypad, expandable I/O and communication cards for easy maintenance.
Protezione completa: Sovracorrente, sovratensione, sottotensione, overheat, sovraccarico, perdita di fase, guasto a terra, ecc.
Safe stop: Supports STO (Coppia di sicurezza disattivata), SIL 2 certificato.
Wide grid tolerance: Withstands ±15% voltage fluctuation for harsh grids.
3.3 Comunicazione flessibile & Espansione
Standard RS-485 Modbus RTU for multi-drive network control.
Optional modules: PROFINET, Ethernet/IP, PROFIBUS DP, CANopen.
Compatible with Siemens, Mitsubishi, Rockwell PLCs via standard telegrams and process objects.
Monitoraggio remoto & diagnostics via Delta DIAStudio or TIA Portal.
- Applicazioni & Suggerimenti per la selezione
4.1 Applicazioni consigliate
| Industria | Applicazioni tipiche | Caratteristiche |
| General Machinery | Pompe, tifosi, compressori, miscelatori | Risparmio energetico, funzionamento stabile, longer equipment life |
| Movimentazione dei materiali | Trasportatori, gru, montacarichi, macchine confezionatrici | High precision speed control, heavy start, quick stop |
| Metal Processing | Lathes, milling, grinding, punching machines | Risposta elevata, posizionamento preciso, controllo della coppia |
| Tessile & Dyeing | Textile machines, dyeing machines, stenter frames | Constant tension, synchronous operation, wide speed range |
| Plastica & Rubber | Injection molding, extrusion, blow molding | Significant energy saving (20~60%), stable pressure control |
4.2 Punti chiave della selezione
- Corrispondenza di potenza: Use VFD055C43A-21 for 5.5kW motors; avoid undersizing.
- Tipo di carico:
Constant torque (trasportatori, miscelatori): use heavy-duty mode (12UN).
Variable torque (tifosi, pompe): light-duty mode (10.8UN) for better efficiency.
- Control requirements:
Posizionamento ad alta precisione: use encoder (PG card) closed-loop vector.
Network control: add communication module (per esempio., PROFINET).
- Ambiente:
Alta temperatura: extra cooling or derating required.
Dusty environment: dust cover + regular fan cleaning.
- Modelli sostitutivi & Percorso di aggiornamento
5.3 Suggerimenti per l'aggiornamento
- Basic upgrade: VFD‑M/GD10 → C2000+ for better precision & funzioni.
- Communication upgrade: Add PROFINET card for Industry 4.0 connectivity.
- System upgrade: Combine with Delta PLC (DVP series) & HMI for full automation solution.
Buying Notes
- Confirm suffix -21 (versione standard), avoid old versions (per esempio., -00).
- Verificare la potenza & attuale: 5.5kW → 12A rated.
- Buy from authorized Delta channels for genuine product & service.
- Order accessories as needed: communication card, tastiera, braking resistor.
VII. Installazione & Manutenzione
7.1 Regole di installazione
- Montaggio: Wall/cabinet mount, installazione verticale; ≥150mm clearance top & bottom for ventilation.
- Cablaggio:
Separate power & control cables to avoid interference.
Shielded cable for signals, single‑end grounding.
Braking resistor matched to power (≤7.5kW internal; external ≈100Ω/500W).
- Messa a terra: Ground resistance ≤4Ω for safety & noise immunity.
Delta VFD055C43A-21 is a high‑performance 5.5kW vector inverter from the C2000+ series, featuring high precision, affidabilità, and expandability for diverse industrial applications. With built-in PLC, wide voltage tolerance, and complete protection, it is an excellent choice for general industrial drive solutions. Select based on motor power, tipo di carico, control requirements, and environment for optimal performance and cost-effectiveness.
Complete Replacement Guide for Delta VFD055C43A-21
- Delta Internal Replacements (C2000+ Series, Compatibilità perfetta)
1.1 Direct Same‑Series Replacements
| Codice errore | Causa | Soluzione |
| OC | Sovracorrente | Check motor short, sovraccarico, acceleration time |
| OV | Sovratensione | Check mains voltage, tempo di decelerazione, braking resistor |
| UV | Sottotensione | Check input phase, voltaggio, cable size |
| OH | Overheat | Check fan, ventilazione, ambient temperature |
| PH | Phase loss | Check input/output wiring, motor winding |
1.2 Near‑Power Replacements
| Modello | Energia | Corrente nominale | Caratteristiche principali | Applicazione |
| VFD055C43A-21 (Originale) | 5.5kW | 12UN / 10.8UN | C2000+, vector, built-in brake, RS-485 | Industria generale |
| VFD055C43A-21 (Aggiornato) | 5.5kW | 12UN | Better cooling, 10,000-step PLC, more protocols | Nuovi progetti |
| VFD055CH43A-21 | 5.5kW | 12UN | CH2000, fan/pump specialized | Tifosi, pompe |
| VFD055CP43B-21 | 5.5kW | 12UN | CP2000, hoist/crane dedicated | Gru, montacarichi |
- Global Brand Replacements (5.5kW / 400V Vector)
2.1 Premium Brands
| Marca | Modello | Serie | Controllare | Vantaggio |
| Siemens | 6SL3210-1KE21-3UF1 (G120C PN) | SINAMICS G120C | Vector/V/F | PROFINET, Filtro EMC |
| Mitsubishi | FR-A840-00720-2-60 | FREQROL A840 | Vettore | Risposta elevata, PLC integrato |
| Yaskawa | CIMR-AB4A0018FBA | A1000 | Vettore | Basso rumore, stabile |
| Schneider | ATV320U75N4 | Altivar 320 | Vector/V/F | Compatto, multi-protocol |
| ABB | ACS550-01-012A-4 | ACS550 | DTC | High torque accuracy |
2.2 Cost‑Effective Brands
| Marca | Modello | Serie | Controllare | Vantaggio |
| Innovazione | MD280NT5.5GB | MD280 | Vettore | PROFINET supported |
| Veichi | AC70-T3-055G | AC70 | Vettore | Full-featured, basso costo |
| INVT | CHF100A-5R5G/7R5P-4 | CHF 100A | Vettore | Built-in brake un |
III. Critical Replacement Rules (Must Follow)
- Energia & attuale: Rated power ≥5.5kW, current ≥12A (servizio pesante).
- Voltaggio: 400Classe V (380~480V) soltanto; do NOT use 200V directly.
- Controllare: Prefer vector control for matching dynamics.
- Sovraccarico: At least 150% for 60s.
- Comunicazione: RS-485 standard; PROFINET/EtherNet/IP optional.
Compatibilità meccanica
Dimensioni: ~90×180×150mm – use same or smaller size.
Raffreddamento: Forced air – keep airflow direction.
Brake unit: Internal for ≤7.5kW; match external if needed.
Tastiera: Use Delta standard keypad or compatible.
Best Replacement by Application
General machinery: VFD055C43A-21 upgraded or Siemens G120C PN.
Tifosi & pompe: VFD055CH43A-21 or Schneider ATV320U75N4.
Cranes/hoists: VFD055CP43B-21 or Mitsubishi FR-A840.
Budget projects: Inovance MD280NT5.5GB or Veichi AC70-T3-055G.
- Upgrade Paths
4.1 Delta Internal Upgrade
- C2000 → C2000+ (prestazione & function improvement).
- Add PROFINET module (VFD-CM-PN01) for industrial networking.
- Pair with Delta PLC + HMI for full automation system.
4.2 Cross‑Brand Upgrade
- Comunicazione: RS-485 → PROFINET / Ethernet/IP.
- Controllare: Open-loop vector → closed-loop vector with encoder.
- Sicurezza: Choose models with STO (SIL 2).
The Delta VFD055C43A-21 has a wide range of replacements.
Same‑brand (C2000+ upgraded) offers seamless compatibility.
Cross‑brand (Siemens G120C PN, Mitsubishi FR-A840) provides higher performance.
Always follow core parameter matching to ensure stable, reliable replacement without performance loss or equipment damage.
