Branson BRA 400-034-BF1 Variable Frequency Drive

Branson BRA 400-034-BF1, sold as the Vectron frequency inverter, is a 17.4 kW (23.4 hp) variable-frequency drive designed to power Branson VW-6 vibration welders. It accepts 400/480 VAC input and provides a controlled output up to 0–480 VAC and a variable frequency range of 0–400 Hz to the welding head, enabling precise control of weld frequency and amplitude for repeatable ultrasonic bonding. The drive includes an integrated LCD display with function keys and an Ethernet interface with built-in web software for system information, diagnostics, and parameterization, plus an I/O interface for PLC communication. The BRA 400-034-BF1 is associated with Branson vibration-welding applications and is listed as compatible with Branson VW-6 machines, with production noted around 2004. For operators, this unit offers robust, configurable frequency control and amplitude adjustment to support reliable, repeatable weld cycles when used with Branson tooling.