Details

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The ABB ACS550-01-072A-4 is an industrial-grade variable frequency drive (VFD) designed for controlling three-phase AC induction motors in general-purpose applications such as pumps, fans, and conveyors. This model is part of the ACS550 series and is now considered obsolete, with the ACS580 series serving as its successor.

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🔧 Key Specifications

• Power Rating: 37 kW (50 HP)

• Input Voltage: 380–480 V, 3-phase

• Output Current: 72 A (standard load)

• Frequency Range: 0–500 Hz

• Overload Capacity:

  • 150% for 60 seconds every 10 minutes (high overload)

  • 110% for 60 seconds every 10 minutes (fan/pump rated)

• Control Modes: Sensorless Vector Control (SVC), V/f Control

• Enclosure: IP21 (indoor use)

• Dimensions: 203 mm (W) × 689 mm (H) × 262 mm (D)

• Weight: 24 kg

• Ambient Temperature Range: -15°C to +40°C

• EMC Compliance: IEC EN61800-3:2004 Category C3/C2

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🔌 I/O and Communication Features

• Analog Inputs: 2 (0–10 VDC or 4–20 mA)

• Analog Outputs: 2 (4–20 mA)

• Digital Inputs: 6

• Relay Outputs: 3

• RS-485 (Modbus RTU): Yes

• PID Control: Yes

• Braking Unit: Optional

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🛠️ Installation and Maintenance

• Mounting: Wall-mounted (cubicle mount)

• Cooling: Natural convection; requires 200 mm clearance above and below

• Heat Loss at Max Output: 1.12 kW

• Maintenance Recommendations:

  • Heatsink temperature check and cleaning: Every 6–12 months

  • Main cooling fan replacement: Every 6 years

  • Capacitor reforming: Annually when stored