المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
| Model Part | معنى | شرح مفصل |
| VFD | Delta Inverter Identifier | Abbreviation for Variable Frequency Drive, the universal prefix for Delta’s industrial automation inverters. |
| 55 | Applicable Motor Power | For 5.5kW (7.5HP) motors; this is the rated output power of the drive. |
| ج | Series Code | C2000/C2000+ Series – Delta high-performance general-purpose vector inverter, supporting induction motors and permanent magnet synchronous motors. |
| 43 | Voltage Class & Phase | 4 = 3-phase 400V class (380~480V); 3 = 3-phase input (vs. 1 for single-phase). |
| أ | Control Mode & سمات | Supports Vector Control (FOC), Torque Control (TRQ), high-performance algorithm, 200% starting torque at 0.5Hz. |
| -21 | Version & Configuration | Standard version: built-in braking unit (selected power ratings), no built-in EMC filter (external available), compliant with international standards. |
- Core Technical Specifications (Official 2026 Data)
| فئة | غرض | قيمة | ملحوظات |
| Basic Specs | القوة المقدرة | 5.5كيلوواط (7.5HP) | For 5.5kW 3-phase induction motors |
| Input Voltage | 3-phase 380~480V (+10%/-20%) | 47~63Hz, wide voltage range | |
| Rated Output Current | 12أ (heavy duty) / 10.8أ (light duty) | Continuous operation in heavy-duty mode | |
| Output Frequency Range | 0.1~600Hz | For both low‑ and high‑speed applications | |
| Control Performance | Control Mode | Sensorless Vector, Closed-loop Vector, V/F Control | Switchable closed/open loop |
| Starting Torque | 200% rated torque at 0.5Hz | Ideal for heavy starting loads | |
| Overload Capacity | 150% for 60s; 200% for 3s | For shock loads | |
| Speed Accuracy | ±0.5% (open-loop) / ±0.02% (closed-loop) | High precision speed control | |
| Torque Response Time | ≤10ms | Fast dynamic response | |
| Hardware | درجة الحماية | IP20 (cabinet mount) | Finger‑safe; clean environment recommended |
| Cooling | Forced air (removable fan) | Easy maintenance, عمر خدمة طويل | |
| Built-in Functions | Braking unit (≤7.5kW), بلك (5,000 خطوات) | High integration, fewer external parts | |
| Communication | RS-485 (Modbus RTU) معيار | PROFINET/EtherNet/IP/CANopen optional | |
| Environment | Operating Temp | -10~40°C (derate 40~50°C) | Derate 1% per °C above 40°C |
| Storage Temp | -20~60°C | Avoid moisture & corrosive gas | |
| رطوبة | 5~95% (non‑condensing) | Suitable for industrial environments |
ثالثا. الميزات الأساسية & Advantages
3.1 High‑Performance Control
Vector control: 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 <10ق, simplifies commissioning.
3.2 High Reliability Design
Modular structure: Hot-swappable keypad, expandable I/O and communication cards for easy maintenance.
Full protection: Overcurrent, overvoltage, undervoltage, overheat, الزائد, phase loss, earth fault, إلخ.
Safe stop: Supports STO (Safe Torque Off), SIL 2 certified.
Wide grid tolerance: Withstands ±15% voltage fluctuation for harsh grids.
3.3 Flexible Communication & Expansion
Standard RS-485 Modbus RTU for multi-drive network control.
Optional modules: PROFINET, EtherNet/IP, PROFIBUS DP, يمكنفتح.
Compatible with Siemens, ميتسوبيشي, Rockwell PLCs via standard telegrams and process objects.
Remote monitoring & diagnostics via Delta DIAStudio or TIA Portal.
- Applications & Selection Tips
4.1 Recommended Applications
| Industry | التطبيقات النموذجية | سمات |
| General Machinery | Pumps, المشجعين, الضواغط, mixers | Energy saving, stable operation, longer equipment life |
| Material Handling | الناقلون, cranes, hoists, packaging machines | High precision speed control, heavy start, quick stop |
| Metal Processing | Lathes, milling, grinding, punching machines | High response, precise positioning, torque control |
| Textile & Dyeing | Textile machines, dyeing machines, stenter frames | Constant tension, synchronous operation, wide speed range |
| Plastic & Rubber | Injection molding, extrusion, blow molding | Significant energy saving (20~60%), stable pressure control |
4.2 اختيار النقاط الرئيسية
- Power matching: Use VFD055C43A-21 for 5.5kW motors; avoid undersizing.
- Load type:
Constant torque (conveyors, mixers): use heavy-duty mode (12أ).
Variable torque (المشجعين, مضخات): light-duty mode (10.8أ) for better efficiency.
- Control requirements:
High-precision positioning: use encoder (PG card) closed-loop vector.
Network control: add communication module (على سبيل المثال, PROFINET).
- Environment:
High temperature: extra cooling or derating required.
Dusty environment: dust cover + regular fan cleaning.
- Replacement Models & Upgrade Path
5.3 ترقية الاقتراحات
- Basic upgrade: VFD‑M/GD10 → C2000+ for better precision & وظائف.
- Communication upgrade: Add PROFINET card for Industry 4.0 connectivity.
- ترقية النظام: Combine with Delta PLC (DVP series) & HMI for full automation solution.
Buying Notes
- Confirm suffix -21 (standard version), avoid old versions (على سبيل المثال, -00).
- Verify power & حاضِر: 5.5kW → 12A rated.
- Buy from authorized Delta channels for genuine product & service.
- Order accessories as needed: communication card, keypad, braking resistor.
سابعا. تثبيت & Maintenance
7.1 Installation Rules
- Mounting: Wall/cabinet mount, vertical installation; ≥150mm clearance top & bottom for ventilation.
- Wiring:
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).
- Grounding: 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, reliability, 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, load type, control requirements, 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
| Fault Code | Cause | حل |
| OC | Overcurrent | Check motor short, الزائد, acceleration time |
| OV | الجهد الزائد | Check mains voltage, deceleration time, braking resistor |
| UV | انخفاض الجهد | Check input phase, الجهد االكهربى, cable size |
| OH | Overheat | Check fan, تهوية, درجة الحرارة المحيطة |
| PH | Phase loss | Check input/output wiring, motor winding |
1.2 Near‑Power Replacements
| نموذج | قوة | التصنيف الحالي | Key Features | Application |
| VFD055C43A-21 (Original) | 5.5كيلوواط | 12أ / 10.8أ | C2000+, vector, built-in brake, RS-485 | General industry |
| VFD055C43A-21 (Upgraded) | 5.5كيلوواط | 12أ | Better cooling, 10,000-step PLC, more protocols | New projects |
| VFD055CH43A-21 | 5.5كيلوواط | 12أ | CH2000, fan/pump specialized | المشجعين, مضخات |
| VFD055CP43B-21 | 5.5كيلوواط | 12أ | CP2000, hoist/crane dedicated | Cranes, hoists |
- Global Brand Replacements (5.5كيلوواط / 400V Vector)
2.1 Premium Brands
| ماركة | نموذج | مسلسل | Control | Advantage |
| سيمنز | 6SL3210-1KE21-3UF1 (G120C PN) | SINAMICS G120C | Vector/V/F | PROFINET, EMC filter |
| ميتسوبيشي | FR-A840-00720-2-60 | FREQROL A840 | Vector | High response, built-in PLC |
| Yaskawa | CIMR-AB4A0018FBA | A1000 | Vector | ضوضاء منخفضة, stable |
| شنايدر | ATV320U75N4 | Altivar 320 | Vector/V/F | Compact, multi-protocol |
| ايه بي بي | ACS550-01-012A-4 | ACS550 | DTC | High torque accuracy |
2.2 Cost‑Effective Brands
| ماركة | نموذج | مسلسل | Control | Advantage |
| ابتكار | MD280NT5.5GB | MD280 | Vector | PROFINET supported |
| Veichi | AC70-T3-055G | AC70 | Vector | Full-featured, low cost |
| INVT | CHF100A-5R5G/7R5P-4 | CHF100A | Vector | Built-in brake un |
ثالثا. Critical Replacement Rules (Must Follow)
- قوة & حاضِر: Rated power ≥5.5kW, current ≥12A (heavy duty).
- الجهد االكهربى: 400V class (380~480V) only; do NOT use 200V directly.
- Control: Prefer vector control for matching dynamics.
- الزائد: At least 150% for 60s.
- Communication: RS-485 standard; PROFINET/EtherNet/IP optional.
Mechanical Compatibility
أبعاد: ~90×180×150mm – use same or smaller size.
Cooling: Forced air – keep airflow direction.
Brake unit: Internal for ≤7.5kW; match external if needed.
Keypad: Use Delta standard keypad or compatible.
Best Replacement by Application
General machinery: VFD055C43A-21 upgraded or Siemens G120C PN.
المشجعين & مضخات: 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+ (performance & 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
- Communication: RS-485 → PROFINET / EtherNet/IP.
- Control: Open-loop vector → closed-loop vector with encoder.
- أمان: 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.
