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Delta inverters use the standard naming convention:
VFD-[Power Code][Series Code][Voltage Code][Special Function Code].
Some new models (such as the MS300 series) adopt a more detailed extended naming format.
The following provides a comprehensive explanation from four aspects: general structure, meaning of each part, typical series examples, and special function codes.
- General Model Structure (Пример: VFD007E23A)
| Позиция | Код | Значение | Example Description |
| 1–3 | VFD | Product Identifier | Variable Frequency Drive. All Delta inverters start with this. |
| 4–6 | 7 | Rated Power Code | Represents 0.75 кВт (750 Вт). Different codes correspond to different power ratings. |
| 7 | Э | Series Code | Indicates VFD‑E series (low‑power inverter with built‑in PLC). |
| 8–9 | 23 | Напряжение & Phase Code | “2” = 200–240 V, “3” = 3‑phase input. |
| 10 | А | Special Function Code | Standard version with built‑in EMI filter. |
- Detailed Breakdown of Each Part
2.1 Power Code vs. Rated Power (кВт)
| Power Code | Rated Power | Power Code | Rated Power | Power Code | Rated Power |
| 2 | 0.2 | 15 | 1.5 | 75 | 7.5 |
| 4 | 0.4 | 22 | 2.2 | 110 | 11 |
| 7 | 0.75 | 37 | 3.7 | 150 | 15 |
| 10 | 1 | 55 | 5.5 | 220 | 22 |
Примечание: Some high‑power models use actual power directly, например, VFD110B43A = 110 кВт.
2.2 Series Code & Функции
| Series Code | Series Name | Ключевые особенности | Типичные применения |
| M | VFD‑M | Low noise, компактный размер | Small machinery, packaging, конвейеры |
| Э | VFD‑E | Built‑in PLC | Автоматизированные производственные линии |
| Б | VFD‑B | Sensorless vector control, high torque | Fans, насосы, компрессоры, краны |
| Ф | VFD‑F | For fans & насосы, built‑in PID | HVAC, cooling towers, water supply |
| MS | MS300 | Compact high‑performance general‑purpose | Small automation, replaces VFD‑M |
| MH | MH300 | High‑performance vector, servo‑grade | Positioning, tension control, sync motors |
| CP2000 | VFD‑CP2000 | Sensorless vector, high overload | General industrial machinery |
| ED | VFD‑ED | Dedicated for elevators | Passenger & freight elevators, escalators |
2.3 Напряжение & Phase Code
| Код | Input Power | Output | Application Region |
| 21 | 1‑phase 200–240 V | 3‑phase 0–240 V | Home/small equipment, Asia/NA |
| 23 | 3‑phase 200–240 V | 3‑phase 0–240 V | Industrial, Asia/NA |
| 43 | 3‑phase 380–460 V | 3‑phase 0–460 V | Industrial, global |
| 53 | 3‑phase 525–600 V | 3‑phase 0–600 V | High‑voltage industrial |
2.4 Special Function Suffix Codes
| Letter | Значение | Letter | Значение | Letter | Значение |
| А | With EMI filter, стандартный | Б | With braking unit | Н | Without EMC filter |
| С | Built‑in STO | ЧАС | Enhanced heat dissipation | П | Higher protection |
| ‑21 | Special version | ‑00 | Standard version | ‑EA | Energy‑saving for fans/pumps |
- New Extended Format (Пример: VFD1A5MS43ANSHA, MS300)
| Позиция | Код | Значение | Описание |
| 1–3 | VFD | Inverter identifier | Standard prefix |
| 4–6 | 1A5 | Rated output current | 1.5 А (≈ 0.75 кВт) |
| 7–8 | MS | Код серии | MS300 series |
| 9–10 | 43 | Voltage code | 460 V 3‑phase input |
| 11 | А | IP rating | IP20 |
| 12 | Н | EMC configuration | Without EMC filter |
| 13 | С | Safety function | Built‑in STO |
| 14 | С | Cooling | Standard cooling |
| 15–16 | AA | Special options | Стандартная конфигурация |
- Complete Model Examples
Пример 1: VFD007E23A
VFD: Inverter
007: 0.75 кВт
Э: E series (built‑in PLC)
23: 3‑phase 200–240 V input
А: Standard with EMI filter
Пример 2: VFD110B43A
VFD: Inverter
110: 110 кВт
Б: B series (sensorless vector)
43: 3‑phase 380–460 V input
А: Standard with EMI filter
Пример 3: VFD1A5MS43ANSHA
VFD: Inverter
1A5: 1.5 A output (≈ 0.75 кВт)
MS: MS300 series
43: 460 V 3‑phase input
А: IP20
Н: No EMC filter
С: СТО
С: Standard cooling
AA: Standard version
- Выбор & Identification Tips
- Power matching: Select according to motor rated power; inverter ≥ 1.1× motor power recommended.
- Voltage compatibility: Confirm input phase and voltage (21/23/43, и т. д.).
- Series function: Choose by application (F for fans/pumps, E for PLC).
- Special requirements: Select protection, EMC, and safety functions as needed.
- Backward compatibility: New models (например, MS300) replace older ones.
- Quick Identification Mnemonic
Start with VFD,
Numbers show power,
Letters show series,
Two digits show voltage,
Suffix shows features.
With the above explanation, you can easily identify the power, ряд, Напряжение, and functions of any Delta inverter model for accurate selection, purchasing, and maintenance.
