Product Description:

The HMS02.1N-F0028-A-07-NNNN is an axis inverter module manufactured by Bosch Rexroth Indramat and assigned to the HMS Axis Inverters series. Acting as a drive-side power stage, the unit receives a stabilized DC link and produces adjustable three-phase output for a single motor axis. By modulating voltage vectors through pulse-width control, it supports precise velocity and torque regulation in automated machining centers, pick-and-place gantries, and conveyor segments that rely on synchronized multi-axis motion. In a modular drive system, it works as the axis-level inverter between the common supply hardware and the connected servo motor. This arrangement lets the controller command rapid speed changes while maintaining stable current delivery during changing load conditions.

This inverter uses liquid cooling, so heat is removed through a sealed coolant circuit rather than cabinet airflow, allowing the electronics to operate in tightly packed enclosures. The cooling method also reduces the amount of heat released into the control cabinet, which helps when several drive modules are mounted close together. The power stage can supply a continuous phase current of 28 A, matching medium-frame servo motors that demand high dynamic torque. Its DC link is rated for DC 700 V, and the enclosure is classified as IP20 for finger-safe protection when installed inside a closed control cabinet. The control board uses Design Version 1, indicating the first hardware revision for the HMS02.1N platform.

The unit belongs to the HMS product type and uses Line Version 2, which supports second-generation Rexroth motion packages and advanced diagnostics over SERCOS. The module is supplied without an internal power supply, so 24 V control logic and auxiliary fan power must be sourced from an external supply. Keeping the low-voltage control source separate from the inverter stage allows the module to operate within a shared DC-link system without adding onboard auxiliary conversion. This layout is typical in multi-axis platforms where supply functions are centralized and individual axis modules focus on motor output control.