12.F5.C1D-3A0A KEB
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The KEB 12.F5.C1D-3A0A is part of the F5 Combivert Axis Drives series and has a maximum motor power of 5 HP with a three-phase 400 V AC/DC input supply. This drive features 8 digital inputs, 2 analog inputs with 12-bit resolution, and provides 2 analog outputs at 11-bit resolution. It comes equipped with a braking transistor and offers a switching frequency of 8 kHz.
Internal Product Review
The 12.F5.C1D-3A0A is a KEB F5 Combivert axis drive designed for 3-ph 400 V AC/DC input and 5 HP motor power. An installed braking transistor and 8 kHz switching frequency support controlled deceleration and smooth drive response in motion systems. A 2 ms I/O scan time stands out as a strong performance advantage for responsive axis control.
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Product Description:
The 12.F5.C1D-3A0A is an axis inverter produced by KEB and belongs to the F5 Combivert Axis Drives series. Featuring inverter size code 12, the drive is housed in type-D packaging and provides 29 dedicated terminals for motor connections, logic wiring, and fieldbus conductors. It controls three-phase machines in coordinated motion systems by converting a 400 V bus into variable-frequency output, while a preinstalled braking transistor absorbs regenerated energy during stopping. The design supports cabinet mounting beside other Combivert controllers in multi-axis gantries and material-handling equipment, and its layout suits applications that need compact power conversion with integrated control connections.
Two differential analog channels accept process commands at 12 bit resolution, and the drive provides 2 analog inputs for reference signals. The control interface also includes 8 digital inputs for start, stop, jog, and mode selection, while two high-side transistor outputs provide status signaling to external devices. A pair of analog outputs operates with 11-bit resolution, and two relay outputs can switch external contactors or other auxiliary circuits. Because the unit has no encoder interface, it relies on sensorless algorithms for speed estimation. Mains power is connected at 3-ph 400 V AC/DC, and the internal inverter stage modulates at 8 kHz to reduce audible noise and current ripple during operation.
The control section scans all I/O every 2 ms, allowing the drive to respond quickly to changing field conditions and command updates. During acceleration, the power stage can deliver a short-time current of 180% of nominal current, and protective circuitry trips at an overcurrent threshold of 216%. The unit is rated for motors up to 5 HP, making it suitable for conveyors, pumps, and small spindle duties in packaging and assembly equipment. Without encoder feedback, the open-loop vector control method maintains stable motor operation across normal load changes within the available current and power range.
