ABB ACS880-04-721A-7

Here's the professional English translation of your ABB ACS880-04-721A-7 frequency converter description:
### **ABB ACS880-04-721A-7 Frequency Converter Detailed Introduction**
#### **1. Product Overview**
The ABB ACS880-04-721A-7 is a **high-power industrial-grade frequency converter** in the **ACS880-04 series**, specifically designed for heavy-duty applications. As ABB's flagship variable frequency drive product, it adopts **Direct Torque Control (DTC) technology** to deliver exceptional motor control performance for the most demanding industrial environments.
#### **2. Key Features**
✅ **High-Performance Drive Control**
- Uses **ABB's patented DTC technology**, with dynamic response speed 10x faster than traditional V/F control
- Control accuracy up to **±0.1%**, supporting both induction motors and permanent magnet synchronous motors
✅ **Modular Design**
- **721A-7** designation:
  - **721**: Frame size (721mm height)
  - **A**: Standard protection class (IP21)
  - **7**: Hardware version
- Supports expansion modules:
  - **0B051**: Basic I/O module
  - **D150**: PROFIBUS DP interface
  - **E208**: Encoder interface module
  - **P943**: Backup power module
✅ **Heavy-Duty Design**
- Rated power: **400kW (at 400V)**
- Overload capacity: **110% continuous operation, 150% for 60 seconds**
- Built-in **du/dt filter** for motor insulation protection
✅ **Smart Functions**
- Adaptive vibration suppression algorithm
- Automatic Motor Identification (AMI)
- Predictive maintenance function for monitoring critical component lifespan
✅ **Safety Certifications**
- Complies with **CE, UL, cUL, IEC 61800** standards
- Optional **Safe Torque Off (STO)** safety function
#### **3. Technical Specifications**
| Parameter             | Specification            |
|-----------------------|-------------------------|
| Model                 | ACS880-04-721A-7        |
| Rated Power           | 400kW (at 400V)         |
| Rated Current         | 721A                    |
| Input Voltage         | 3-phase 380-500V AC ±10%|
| Output Voltage        | 0...input voltage       |
| Frequency Range       | 0-500Hz                 |
| Control Method        | Direct Torque Control (DTC) |
| Protection Class      | IP21 (standard)/IP54 (optional) |
| Communication Protocols | PROFIBUS, Modbus, Ethernet/IP |
| Cooling Method        | Forced air cooling      |
#### **4. Typical Applications**
- **Mining Equipment**: Ball mills, mine hoists
- **Cement Industry**: Rotary kilns, large fans
- **Metallurgical Industry**: Rolling mills, continuous casters
- **Marine Industry**: Main propulsion drives
- **Petrochemical**: Large compressors
#### **5. Selection Considerations**
1. **Voltage Matching**: Select according to grid voltage (400V/690V)
2. **Load Type**:
   - Constant torque loads (e.g. conveyors): Require 100% rated current
   - Variable torque loads (e.g. fans): Can use reduced capacity
3. **Environmental Requirements**:
   - Operating temperature: -15...+50°C (requires derating)
   - Altitude <1000m (requires derating above this)
#### **6. Maintenance Recommendations**
- Regular cleaning of cooling ducts (every 6 months)
- Check DC bus capacitor condition (every 2 years)
- Recommended to upgrade firmware to latest version
- Use **ABB DriveWindow** software for condition monitoring
#### **7. Recommended Accessories**
- **Reactors**: ACS880-01-LCxx (input reactors)
- **Filters**: ACS880-01-Fxx (output filters)
- **Braking Units**: ACS880-01-Bxx (dynamic braking)

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