Product Description:

The 12.F5.M1D-3AHD is an inverter from KEB within the F5 Combivert Axis Drives series. This unit is intended to modulate three-phase 400 V motors in process and machine-tool automation, converting fixed mains energy into variable voltage and frequency to suit dynamic axis requirements. By integrating power, control, and feedback connections into a compact housing, the drive simplifies cabinet layout for mid-range servomotor and induction motor applications.

It uses a TTL auxiliary signal output together with an incremental TTL encoder interface on a SubD connector, allowing straightforward position feedback to the controller. Heat is removed by natural convection, so no additional fan wiring is required and the rated heat-sink temperature can rise safely to 90 °C under load. The drive can supply up to 5 HP of mechanical power, with electrical output limited to 6.6 kVA at a continuous current of 9.5 A. Motor speed command is generated through pulse-width modulation that switches the IGBTs at 8 kHz and supports output frequencies as high as 400 Hz for high-speed spindles. Multi-mode control allows selection among V/Hz, sensorless vector, and closed-loop torque regulation, and the minimum external braking resistor value is 82 Ω for controlled deceleration.

The housing follows D geometry and size code 12, giving a narrow footprint that fits IP20 cabinets where natural airflow is available. An integrated braking transistor dissipates regenerative energy, while overload capacity reaches 180% for short periods and the drive withstands an overcurrent of 216 % without tripping. Operation is permitted up to 2000 m above sea level, provided the heat sink does not exceed the specified limit. Protection against finger contact and moderate dust is confirmed by the IP20 rating. A three-phase 400 VAC or 400 VDC supply feeds the input bus, supporting consistent performance when the installation shares a common DC link.