Product Description:

The 12.H6.ACB-21B0 is a single-axis inverter module produced by KEB within the H6 Combivert Multi-Axis Drives series. It connects to a shared DC-link bus where several axes receive power from one rectifier, and it converts the bus voltage into a controlled three-phase output for one motor. By combining power electronics, encoder handling, and a braking output in one housing, the unit supports coordinated motion sequences in packaging, material-handling, and general automation cells.

On the motor side, the drive supplies 4 kW of active power, while its apparent power capability is 6.2 kVA. These values distinguish the real power delivered to the load from the total volt-ampere demand placed on upstream components. The DC bus is designed for a supply derived from a 400 V nominal line, and the module draws 9 A under rated conditions. During rapid acceleration or short overloads, the output stage can reach 18 A while remaining below the internal shutdown threshold of 21.6 A. Safe Torque Off and Safe Brake Control inputs support a controlled response to faults or emergency stop commands by preventing unintended motor torque and coordinating brake operation.

Thermal losses include 58 W of heat sink dissipation and 26 W of internal control loss. These values help determine the required cabinet airflow before the 80 °C overheat level is approached. For load-holding applications, the integrated brake supply provides 24 VDC at 3.3 A to operate a compatible external brake. The module has a compact 50 mm housing width, while still accommodating a two-channel multi-encoder interface that returns high-resolution position data to the motion controller. Its overcurrent protection trips at 21.6 A, helping protect the output stage when motor current exceeds the permitted limit. The shared DC-link arrangement allows additional H6 inverter modules to connect to the same power bus for coordinated multi-axis operation.