Q1: What is ABB ACS550-01-072A-4?
A: The ACS550-01-072A-4 is a 37kW (50HP) low voltage AC drive from ABB's ACS550 series, designed for fan and pump applications. It supports 3-phase 380-480V input, 72A output current (normal duty), sensorless vector control, and built-in Modbus RTU communication.
Q2: What is the difference between normal duty and heavy duty for ACS550-01-072A-4?
A: Normal duty (ND): 37kW, 72A output, 1.5× overload for 1 min every 10 min — suitable for fan/pump loads. Heavy duty (HD): 30kW, 59A output, 1.8× overload for 2 sec — suitable for conveyors and constant torque applications.
Q3: Does ACS550-01-072A-4 include a control panel?
A: No. The control panel (ACS-CP-A assistant panel or ACS-CP-D basic panel) must be ordered separately. The drive can also be operated via digital/analog I/O or Modbus communication without a panel.