Product Description:

The 8I66T400220.00-000 is an AC inverter built by B&R Automation for the 8I6 ACOPOS Inverters series. Installed between the plant's low-voltage bus and a three-phase induction motor, it modulates output frequency and voltage so a controller can match shaft speed to process demands. Integrated current limiting and braking circuitry let a line accelerate or decelerate without excessive mechanical stress, making the unit a common choice for material-handling, pumping, and positioning axes in automated equipment.

Under continuous load, the drive can supply an apparent power of 5.3 kVA. This headroom supports a motor power of 2.2 kW while maintaining a nominal output current of 5.5 A. When the DC link first charges, the inrush current peaks at 10 A, and the control electronics permit a maximum transient current of 8.3 A for up to 60 seconds to handle short production surges. The inverter has an enclosure rating of IP20, which provides basic finger protection and requires installation inside a cabinet. Electrically, the feeder that supplies the inverter must be rated to clear faults up to 5 kA, and any braking resistor connected to the DC bus must meet the minimum resistance requirement to keep energy dissipation within thermal limits.

The housing measures 228 mm high, 140 mm wide, and 158 mm deep, so it fits on a compact DIN rail section while leaving airflow space to manage a power dissipation of 76 W. Internally, the control section runs its PWM stage at a nominal clock frequency of 4 kHz, a setting that balances acoustic noise and switching loss. During dynamic braking, the minimum external resistor value of 54 Ω protects the chopper transistor from overcurrent. The complete assembly weighs 2.1 kg, so it remains manageable during panel installation and supports stable thermal behavior in continuous duty.