Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
| Partea modelului | Sens | Explicație detaliată |
| VFD | Delta Inverter Identifier | Abbreviation for Variable Frequency Drive, the universal prefix for Delta’s industrial automation inverters. |
| 55 | Puterea motorului aplicabilă | For 5.5kW (7.5HP) motoare; this is the rated output power of the drive. |
| C | Cod de serie | C2000/C2000+ Series – Delta high-performance general-purpose vector inverter, supporting induction motors and permanent magnet synchronous motors. |
| 43 | Clasa de tensiune & Fază | 4 = 3-phase 400V class (380~480V); 3 = 3-phase input (vs. 1 for single-phase). |
| O | Modul de control & Caracteristici | Supports Vector Control (FOC), Controlul cuplului (TRQ), high-performance algorithm, 200% starting torque at 0.5Hz. |
| -21 | Versiune & Configurare | Versiune standard: built-in braking unit (selected power ratings), no built-in EMC filter (external available), compliant with international standards. |
- Specificații tehnice de bază (Official 2026 Data)
| Categorie | Articol | Valoare | Note |
| Basic Specs | Putere nominală | 5.5kW (7.5HP) | For 5.5kW 3-phase induction motors |
| Tensiune de intrare | 3-faza 380~480V (+10%/-20%) | 47~63Hz, gamă largă de tensiuni | |
| Curent nominal de ieșire | 12O (sarcina grea) / 10.8O (sarcina usoara) | Continuous operation in heavy-duty mode | |
| Output Frequency Range | 0.1~600Hz | For both low‑ and high‑speed applications | |
| Controlul performanței | Modul de control | Sensorless Vector, Closed-loop Vector, Control V/F | Switchable closed/open loop |
| Cuplul de pornire | 200% rated torque at 0.5Hz | Ideal for heavy starting loads | |
| Capacitate de suprasarcină | 150% for 60s; 200% for 3s | For shock loads | |
| Precizia vitezei | ±0,5% (open-loop) / ±0.02% (closed-loop) | High precision speed control | |
| Torque Response Time | ≤10ms | Fast dynamic response | |
| Hardware | Grad de protectie | IP20 (cabinet mount) | În siguranță pentru degete; clean environment recommended |
| Răcire | Forced air (removable fan) | Întreținere ușoară, durata de viata lunga | |
| Funcții încorporate | Unitate de frânare (≤7.5kW), PLC (5,000 trepte) | Integrare ridicată, fewer external parts | |
| Comunicare | RS-485 (Modbus RTU) standard | PROFINET/EtherNet/IP/CANopen optional | |
| Mediu | Temp. de operare | -10~40°C (derate 40~50°C) | Derate 1% per °C above 40°C |
| Storage Temp | -20~60°C | Evitați umezeala & gaz corosiv | |
| Umiditate | 5~95% (necondens) | Suitable for industrial environments |
III. Caracteristici de bază & Avantaje
3.1 High‑Performance Control
Controlul vectorial: 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 de înaltă fiabilitate
Structură modulară: Hot-swappable keypad, expandable I/O and communication cards for easy maintenance.
Protectie completa: Supracurent, supratensiune, subtensiune, supraîncălzi, suprasarcina, pierdere de fază, defect la pământ, etc.
Safe stop: Supports STO (Oprire sigură a cuplului), SIL 2 certificat.
Wide grid tolerance: Withstands ±15% voltage fluctuation for harsh grids.
3.3 Flexible Communication & Expansiune
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.
Monitorizare de la distanță & diagnostics via Delta DIAStudio or TIA Portal.
- Aplicații & Sfaturi de selecție
4.1 Aplicații recomandate
| Industrie | Aplicații tipice | Caracteristici |
| General Machinery | Pompe, fani, compresoare, mixere | Energy saving, stable operation, longer equipment life |
| Manipularea materialelor | Transportoare, macarale, palanele, mașini de ambalare | High precision speed control, heavy start, quick stop |
| Metal Processing | Strunguri, frezarea, grinding, punching machines | High response, precise positioning, controlul cuplului |
| Textile & Dyeing | Textile machines, dyeing machines, stenter frames | Constant tension, funcţionare sincronă, wide speed range |
| Plastic & Rubber | Injection molding, extrusion, blow molding | Significant energy saving (20~60%), stable pressure control |
4.2 Puncte cheie ale selecției
- Potrivirea puterii: Use VFD055C43A-21 for 5.5kW motors; avoid undersizing.
- Load type:
Constant torque (transportoare, mixere): use heavy-duty mode (12O).
Variable torque (fani, pompe): light-duty mode (10.8O) for better efficiency.
- Control requirements:
Poziționare de înaltă precizie: use encoder (PG card) closed-loop vector.
Network control: add communication module (de ex., PROFINET).
- Mediu:
High temperature: extra cooling or derating required.
Dusty environment: dust cover + regular fan cleaning.
- Modele de înlocuire & Calea de upgrade
5.3 Upgrade Suggestions
- Basic upgrade: VFD‑M/GD10 → C2000+ for better precision & funcții.
- 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 (versiune standard), avoid old versions (de ex., -00).
- Verify power & actual: 5.5kW → 12A rated.
- Buy from authorized Delta channels for genuine product & serviciu.
- Order accessories as needed: communication card, tastatura, braking resistor.
VII. Instalare & Întreţinere
7.1 Reguli de instalare
- Montare: Wall/cabinet mount, vertical installation; ≥150mm clearance top & bottom for ventilation.
- Cablaj:
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).
- Împământare: 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, fiabilitate, 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, tipul de sarcină, cerințele de control, and environment for optimal performance and cost-effectiveness.
Complete Replacement Guide for Delta VFD055C43A-21
- Delta Internal Replacements (C2000+ Series, Seamless Compatibility)
1.1 Direct Same‑Series Replacements
| Cod de eroare | Cauza | Soluţie |
| OC | Supracurent | Check motor short, suprasarcina, acceleration time |
| OV | Supratensiune | Check mains voltage, deceleration time, braking resistor |
| UV | Subtensiune | Check input phase, Voltaj, cable size |
| OH | Overheat | Check fan, ventilare, temperatura mediului ambiant |
| PH | Phase loss | Check input/output wiring, motor winding |
1.2 Near‑Power Replacements
| Model | Putere | Curent nominal | Caracteristici cheie | Aplicație |
| VFD055C43A-21 (Original) | 5.5kW | 12O / 10.8O | C2000+, vector, built-in brake, RS-485 | Industria generală |
| VFD055C43A-21 (Actualizat) | 5.5kW | 12O | Better cooling, 10,000-step PLC, more protocols | Proiecte noi |
| VFD055CH43A-21 | 5.5kW | 12O | CH2000, fan/pump specialized | Fani, pompe |
| VFD055CP43B-21 | 5.5kW | 12O | CP2000, hoist/crane dedicated | Macarale, palanele |
- Global Brand Replacements (5.5kW / 400V Vector)
2.1 Premium Brands
| Marca | Model | Serie | Controla | Avantaj |
| Siemens | 6SL3210-1KE21-3UF1 (G120C PN) | SINAMICS G120C | Vector/V/F | PROFINET, filtru EMC |
| Mitsubishi | FR-A840-00720-2-60 | FREQROL A840 | Vector | High response, built-in PLC |
| Yaskawa | CIMR-AB4A0018FBA | A1000 | Vector | Low noise, stable |
| Schneider | ATV320U75N4 | Altivar 320 | Vector/V/F | Compact, multi-protocol |
| ABB | ACS550-01-012A-4 | ACS550 | DTC | High torque accuracy |
2.2 Cost‑Effective Brands
| Marca | Model | Serie | Controla | Avantaj |
| Inovaţie | MD280NT5.5GB | MD280 | Vector | PROFINET supported |
| Veichi | AC70-T3-055G | AC70 | Vector | Full-featured, cost scăzut |
| INVT | CHF100A-5R5G/7R5P-4 | CHF100A | Vector | Built-in brake un |
III. Critical Replacement Rules (Must Follow)
- Putere & actual: Rated power ≥5.5kW, current ≥12A (sarcina grea).
- Voltaj: 400V class (380~480V) numai; do NOT use 200V directly.
- Controla: Prefer vector control for matching dynamics.
- Supraîncărcare: At least 150% for 60s.
- Comunicare: RS-485 standard; PROFINET/EtherNet/IP optional.
Mechanical Compatibility
Dimensiuni: ~90×180×150mm – use same or smaller size.
Răcire: Forced air – keep airflow direction.
Unitate de frână: Internal for ≤7.5kW; match external if needed.
Keypad: Use Delta standard keypad or compatible.
Best Replacement by Application
Mașini generale: VFD055C43A-21 upgraded or Siemens G120C PN.
Fani & pompe: VFD055CH43A-21 or Schneider ATV320U75N4.
Cranes/hoists: VFD055CP43B-21 or Mitsubishi FR-A840.
Budget projects: Inovance MD280NT5.5GB or Veichi AC70-T3-055G.
- Căi de upgrade
4.1 Delta Internal Upgrade
- C2000 → C2000+ (performanţă & 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
- Comunicare: RS-485 → PROFINET / EtherNet/IP.
- Controla: Open-loop vector → closed-loop vector with encoder.
- Siguranţă: 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.
