3BHS842007 E01 REV C
ACS6080
USER MANUAL
03 POWER ELECTRONICS AND CABINET FEATURES
3.1.1.1
ACS6080 cabinet units
3.1.1.2
Final drive configuration
The final drive configuration depends on the following factors:
• Required output power
• Configuration of the main power supply (input transformer or
direct-to-line connection)
• Ability to recover energy (active or diode front end)
• Motor type (synchronous or asynchronous)
• Single or multi-motor application.
3.1.2
Motor
See the “Motor specification”.
3.2
Standard cabinet units
The following sections describe the ARU, INU, LSU, CBU, TEU, COU and
WCU cabinets.
3.2.1
Active rectifier unit (ARU)/inverter unit (INU)
An ARU and INU have the same mechanical and electrical designs.
• ARU:
The ARU is a 6-pulse self-commutated voltage source inverter
that rectifies the line voltage of the supply network and maintains
the DC-link voltage at a constant level irrespective of changes in the
supply network.
The active 6-pulse rectifier allows for regenerative braking.
• INU:
The INU controls the 3-phase motor voltage and converts the
DC-link voltage to the required AC motor voltage and frequency.
The INU is a self-commutated voltage source inverter in 6-pulse, 3-
level topology. To increase the drive power, 4 units can be operated
in parallel on 1 motor.
Standard cabinet units
Optional cabinet units
• Active rectifier unit (ARU)
• Inverter unit (INU)
• Line supply unit (LSU)
• Capacitor bank unit (CBU)
• Terminal unit (TEU)
• Control unit (COU)
• Water cooling unit (WCU)
• Input reactor unit (IRU)
• Input filter unit (IFU)
• Voltage limiter unit (VLU)
• Braking units:
- Resistor braking unit (RBU)
- Braking chopper unit (BCU)
• Excitation unit (EXU)
• Customer interface unit (CIU)
