Mitsubishi Amplifiers - reducing panel space

Mitsubishi Electric have unveiled its new Automation Melservo-J5D servo amplifiers which the company claims are ideal for medium to large servo applications that require multiple drive units capable of managing regenerative energy. Available in 400V and 1kW to 7kW capacity, the amplifiers have been designed to expand the existing drive capabilities for the Melservo-J5 portfolio and are compatible with Melservo-J5 servo motors (HK-KT/ST/RT/MT). In a typical common DC bus servo system, Melservo-J5D servo amplifiers are connected on a DC bus bar connected to a MR-CV power regeneration converter unit. The MR-CV converts 400VAC power to DC. Regenerative energy can then be shared among the different servo drives or recaptured and returned to the power supply, improving overall energy efficacy of a machine. When multiple MR-J5D-G4 drive units are connected to an MR-CV_4 power regeneration converter unit by a common DC bus connection, the regenerative power of one axis can be used for driving other axes, contributing to energy saving. The MR-CV can also return regenerative energy to the power supply for other power requirements. Common DC bus connection reduces overall wiring requirements and eliminates the need for multiple MCCB or MC branch protection devices. Cables are managed above and below the servo amplifier, enabling a clean panel design. The compact "bookshelf" type design of the Melservo-J5D significantly reduces panel space when compared to general industrial servo amplifiers. With 1/2/3-axis models, large format servo systems can be managed in a compact space. “We are seeing a growing trend in end users and OEMs that are designing machines with energy conservation in mind,” stated Dan Zachacki, product manager for servo and motion. “Our common DC bus servo drive offers customers a unique solution that can share and conserve energy among a number of servo axis.”