Product Description:

The 12.F5.B1B-350B axis inverter is manufactured by KEB and belongs to the F5 Combivert Axis Drives series. It is intended for industrial automation tasks that need closed-loop motor control, supplying adjustable AC output to keep process speed and torque within programmed limits. By combining power electronics, control logic, and a braking stage inside one frame, the drive reduces panel space and wiring complexity on production lines.

Control electronics run from a 24 V DC supply, allowing parameter storage and fieldbus communication to stay active when mains power is isolated. Heat from the power section is transferred through the varnished flat rear cooling surface, enabling direct mounting against a cabinet wall without forced airflow. The drive includes an integrated braking transistor, so excess regenerative energy is switched to external resistors rather than returned to the DC link. The enclosure carries an IP20 protection rating, making the unit suitable for clean, closed panels. The inverter supports motors up to 5 HP and can deliver up to 21 A during short-term overloads, while the IGBTs switch at 4 kHz to balance current ripple and efficiency. A TTL-level auxiliary signal output and an incremental TTL encoder connector give the controller direct access to high-resolution speed or position data without additional interface hardware.

Command and status exchange with the PLC is completed every 2 ms, supporting tight position loops. The drive offers 5 digital inputs for command signals and two relay outputs for feedback to interlock or alarm circuits. All field wiring terminates on 17 control terminals, keeping control connections organized inside the panel. Within inverter size code 12, the semiconductor stage is rated for a continuous phase current of 9.5 A, ensuring dependable operation at nominal load. The internal control rail supports the drive’s logic functions and helps reduce the number of separate cabinet components.