Product Description:

B&R Automation's 8I74T400300.010-1 belongs to the 8I7 ACOPOS Inverters series. The AC inverter converts DC link energy from a shared supply into variable voltage and frequency, letting motors run at commanded speeds in handling, packaging, and processing machines. It integrates with the control architecture and supplies the signal processing needed to regulate speed, torque, and dynamic braking. It is intended for automated equipment that depends on stable motor response during changes in load and speed.

The power stage is rated for a motor output of 3 kW, while its apparent power capability reaches 7.3 kVA. This means the unit can deliver both real and reactive power to an inductive load. A nominal output current of 7.1 A supports continuous operation at that rating, and a maximum inrush of 10 A is permitted when the DC link charges. The built-in brake chopper shunts regenerative energy to an internal resistor, and the integrated EMC filter suppresses conducted noise on the mains line. Control signals enter through 6 digital inputs and 3 analog inputs, and high-speed torque loops are refreshed at a nominal clock frequency of 4 kHz. Network communication is handled by a POWERLINK Type 2 interface, allowing synchronous data exchange with the central PLC. The short-circuit withstand level is 5 kA.

The inverter housing measures 60 mm in width, 245 mm in depth, and 317 mm in height, so it occupies a narrow slot on a DIN rail or mounting plate. With a protection rating of IP20, the device is intended for installation inside a closed control cabinet where it is shielded from direct contact. Internal losses are limited to 100 W, enabling forced-air ventilation to maintain permitted temperatures without external heat exchangers. The slim enclosure also helps cabinet layouts that place several drive components side by side while preserving access to wiring and airflow.