Product Description:

The 8I74T401500.010-1 is an AC inverter module produced by B&R Automation for the 8I7 ACOPOS Inverters series. Intended for three-phase supply networks, the device creates a variable-frequency output that lets control systems adjust the speed and torque of induction or synchronous motors found in conveyors, gantry axes, and other automated machinery. By integrating this inverter into a cabinet, machine builders obtain coordinated motion control without relying on mechanical gear changes or throttle devices.

With a continuous motor rating of 15 kW, the inverter can deliver mechanical power suitable for midsized drives. The inverter has a nominal output current of 33 A and an apparent power capacity of 28.8 kVA, which are important considerations for conductor sizing. When supplied from a 500 V AC network, the mains input current reaches 33.3 A, so upstream protection devices must be sized appropriately. A maximum clock frequency of 16 kHz is available for the IGBT bridge; higher carrier frequencies improve output quality but increase switching losses. Internal energy storage of 1660 µF stabilizes the DC link during load transients, and the drive accepts shielded motor leads up to 50 m or unshielded runs up to 100 m.

Control electronics are powered from an auxiliary rail of 24 VDC at 1.1 A, separating the logic circuitry from the main supply and maintaining parameter retention when mains power is removed. The thermal design allows continuous operation while dissipating 480 W into the enclosure, a value used to verify cabinet ventilation. The device has an ingress protection rating of IP20, so it must be mounted inside a closed panel to prevent accidental contact and limit exposure to dust. For dynamic braking, an external resistor of at least 16 Ω connects to the internal chopper, allowing excess regenerative energy to be converted safely into heat. Additional features include a 10-bit analog output channel and support for three supply phases.