コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
| モデルパーツ | 意味 | Detailed Explanation |
| VFD | Delta Inverter Identifier | Abbreviation for Variable Frequency Drive, the universal prefix for Delta’s industrial automation inverters. |
| 55 | 適用モーター出力 | For 5.5kW (7.5HP) モーター; this is the rated output power of the drive. |
| C | Series Code | C2000/C2000+ Series – Delta high-performance general-purpose vector inverter, supporting induction motors and permanent magnet synchronous motors. |
| 43 | Voltage Class & 段階 | 4 = 3-phase 400V class (380~480V); 3 = 3-phase input (vs. 1 for single-phase). |
| あ | 制御モード & 特徴 | Supports Vector Control (FOC), Torque Control (TRQ), high-performance algorithm, 200% starting torque at 0.5Hz. |
| -21 | バージョン & Configuration | 標準バージョン: built-in braking unit (selected power ratings), no built-in EMC filter (external available), compliant with international standards. |
- 主要な技術仕様 (正式 2026 データ)
| カテゴリ | アイテム | 価値 | 注意事項 |
| Basic Specs | Rated Power | 5.5kW (7.5HP) | For 5.5kW 3-phase induction motors |
| 入力電圧 | 3-phase 380~480V (+10%/-20%) | 47~63Hz, wide voltage range | |
| 定格出力電流 | 12あ (heavy duty) / 10.8あ (light duty) | Continuous operation in heavy-duty mode | |
| Output Frequency Range | 0.1~600Hz | For both low‑ and high‑speed applications | |
| 制御性能 | 制御モード | Sensorless Vector, Closed-loop Vector, V/F Control | Switchable closed/open loop |
| Starting Torque | 200% 定格トルク（0.5Hz時） | Ideal for heavy starting loads | |
| 過負荷容量 | 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 | |
| ハードウェア | 保護等級 | IP20 (cabinet mount) | Finger‑safe; clean environment recommended |
| 冷却 | Forced air (removable fan) | Easy maintenance, 長寿命 | |
| Built-in Functions | Braking unit (≤7.5kW), PLC (5,000 steps) | High integration, fewer external parts | |
| コミュニケーション | RS-485 (Modbus RTU) 標準 | PROFINET/EtherNet/IP/CANopen optional | |
| 環境 | 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 | |
| 湿度 | 5~95% (non‑condensing) | Suitable for industrial environments |
Ⅲ. コア機能 & 利点
3.1 High‑Performance Control
ベクトル制御: 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 High Reliability Design
Modular structure: Hot-swappable keypad, expandable I/O and communication cards for easy maintenance.
Full protection: 過電流, 過電圧, 不足電圧, overheat, 過負荷, 位相損失, earth fault, 等.
Safe stop: Supports STO (Safe Torque Off), SIL 2 certified.
Wide grid tolerance: Withstands ±15% voltage fluctuation for harsh grids.
3.3 Flexible Communication & 拡大
Standard RS-485 Modbus RTU for multi-drive network control.
Optional modules: プロフィネット, EtherNet/IP, プロフィバスDP, CANopen.
Compatible with Siemens, 三菱, Rockwell PLCs via standard telegrams and process objects.
Remote monitoring & diagnostics via Delta DIAStudio or TIA Portal.
- アプリケーション & Selection Tips
4.1 Recommended Applications
| 業界 | 代表的な用途 | 特徴 |
| General Machinery | Pumps, ファン, コンプレッサー, mixers | Energy saving, stable operation, longer equipment life |
| Material Handling | Conveyors, クレーン, hoists, packaging machines | High precision speed control, heavy start, quick stop |
| Metal Processing | Lathes, milling, grinding, punching machines | High response, precise positioning, トルク制御 |
| Textile & Dyeing | Textile machines, dyeing machines, stenter frames | Constant tension, synchronous operation, wide speed range |
| プラスチック & Rubber | Injection molding, extrusion, blow molding | Significant energy saving (20~60%), stable pressure control |
4.2 選定のポイント
- パワーマッチング: Use VFD055C43A-21 for 5.5kW motors; avoid undersizing.
- Load type:
Constant torque (conveyors, mixers): use heavy-duty mode (12あ).
Variable torque (ファン, パンプス): light-duty mode (10.8あ) for better efficiency.
- Control requirements:
High-precision positioning: use encoder (PG card) closed-loop vector.
Network control: add communication module (例えば, プロフィネット).
- 環境:
High temperature: extra cooling or derating required.
Dusty environment: dust cover + regular fan cleaning.
- 代替モデル & Upgrade Path
5.3 Upgrade Suggestions
- Basic upgrade: VFD‑M/GD10 → C2000+ for better precision & functions.
- 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 (標準バージョン), avoid old versions (例えば, -00).
- Verify power & 現在: 5.5kW → 12A rated.
- Buy from authorized Delta channels for genuine product & サービス.
- Order accessories as needed: communication card, keypad, braking resistor.
Ⅶ. インストール & メンテナンス
7.1 Installation Rules
- 取り付け: Wall/cabinet mount, vertical installation; ≥150mm clearance top & bottom for ventilation.
- 配線:
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).
- 接地: 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
| 故障コード | 原因 | 解決 |
| OC | 過電流 | Check motor short, 過負荷, acceleration time |
| OV | 過電圧 | Check mains voltage, deceleration time, braking resistor |
| UV | 不足電圧 | Check input phase, 電圧, cable size |
| OH | Overheat | Check fan, ventilation, ambient temperature |
| PH | Phase loss | Check input/output wiring, motor winding |
1.2 Near‑Power Replacements
| モデル | 力 | 定格電流 | 主な特長 | 応用 |
| VFD055C43A-21 (オリジナル) | 5.5kW | 12あ / 10.8あ | C2000+, vector, built-in brake, RS-485 | 一般産業 |
| VFD055C43A-21 (Upgraded) | 5.5kW | 12あ | Better cooling, 10,000-step PLC, more protocols | New projects |
| VFD055CH43A-21 | 5.5kW | 12あ | CH2000, fan/pump specialized | ファン, パンプス |
| VFD055CP43B-21 | 5.5kW | 12あ | CP2000, hoist/crane dedicated | クレーン, hoists |
- Global Brand Replacements (5.5kW / 400V Vector)
2.1 Premium Brands
| ブランド | モデル | シリーズ | コントロール | アドバンテージ |
| シーメンス | 6SL3210-1KE21-3UF1 (G120C PN) | SINAMICS G120C | Vector/V/F | プロフィネット, EMC filter |
| 三菱 | FR-A840-00720-2-60 | FREQROL A840 | Vector | High response, built-in PLC |
| Yaskawa | CIMR-AB4A0018FBA | A1000 | Vector | 低騒音, stable |
| シュナイダー | ATV320U75N4 | アルティバール 320 | Vector/V/F | コンパクト, multi-protocol |
| ABB | ACS550-01-012A-4 | ACS550 | DTC | High torque accuracy |
2.2 Cost‑Effective Brands
| ブランド | モデル | シリーズ | コントロール | アドバンテージ |
| 革新 | 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 |
Ⅲ. Critical Replacement Rules (Must Follow)
- 力 & 現在: Rated power ≥5.5kW, current ≥12A (heavy duty).
- Voltage: 400V class (380~480V) only; do NOT use 200V directly.
- コントロール: Prefer vector control for matching dynamics.
- 過負荷: At least 150% for 60s.
- コミュニケーション: RS-485 standard; PROFINET/EtherNet/IP optional.
機械的互換性
寸法: ~90×180×150mm – use same or smaller size.
冷却: 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.
ファン & パンプス: 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+ (パフォーマンス & 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
- コミュニケーション: RS-485 → PROFINET / EtherNet/IP.
- コントロール: Open-loop vector → closed-loop vector with encoder.
- 安全性: 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.
