Product Description:

The 12.56.210 is a chassis-mounted inverter produced by KEB and assigned to the F5 Combivert Axis Drives series. It converts fixed three-phase line power into a variable, pulse-width-modulated output that regulates speed and torque on AC motors used in assembly cells, material-handling conveyors, and other automated processes. By integrating into a multi-axis motion system, the unit enables precise drive coordination without mechanical speed changers, which reduces system complexity in industrial automation.

It accepts three-phase line power at 3 Ph 380/460 V AC and 50/60 Hz, matching common factory distribution grids. The internal power stage is sized for a continuous output of 9.5 A, which supports motors up to 5 HP on constant-torque duty cycles. A maximum mains fuse of 20 A is specified to clear faults without nuisance trips, and the integrated braking transistor allows rapid deceleration by routing excess DC-bus energy to an external resistor. The drive carries inverter size code 12, making its footprint consistent with other ratings in the series. Output voltage follows the input range, and the terminals require a minimum conductor cross-section of 2.5 mm² to keep thermal rise within allowable limits.

Thermal and installation limits also shape application planning. Cabinet cooling uses a radiating surface of 2.0 m² and requires an airflow of 0.5 m³/min, values that determine fan capacity for the control panel. The housing is rated IP00, so it relies entirely on the enclosure for protection against dust and accidental contact. To preserve ventilation, KEB specifies at least 50 mm of side clearance and 100 mm above the heatsink fins. The inverter operates without current derating up to 3000 m altitude; beyond this height, reduced air density can impair heat transfer and may require output limiting. Both the input and output remain three phase, which simplifies wiring between upstream breakers and the motor terminals.