15.F6.K12-3521 KEB
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The KEB 15.F6.K12-3521 is an inverter drive from the F6 Combivert Inverter Drives series. It supports three analog inputs, eight digital inputs, four digital outputs, and a maximum output frequency of 599 Hz. This drive provides support for ASM, SM, and SynRM motor types, along with control modes such as v/f, Encoder, Encoder plus Model, and Model.
Internal Product Review
The 15.F6.K12-3521 is a well-engineered KEB F6 Combivert inverter drive with support for ASM, SM, and SynRM motor types. Flexible machine integration comes from 8 digital inputs and a maximum output frequency of 599 Hz, making this unit a strong choice for demanding motion applications.
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Product Description:
The 15.F6.K12-3521 is an inverter drive manufactured by KEB for the F6 Combivert Inverter Drives series. The unit converts fixed-frequency three-phase mains power into a regulated output that can run asynchronous, synchronous, and synchronous reluctance motors used in conveyors, pumps, or machine tools. In automation systems, it acts as the power stage between a PLC and the motor, delivering speed and torque commands while collecting field feedback through its onboard inputs. Its support for multiple motor types allows the same drive platform to operate a range of industrial motion and process applications.
This model can modulate the motor terminals at frequencies up to 599 Hz, allowing it to operate high-speed spindles or fast-cycling servo axes. Three process variables, such as setpoint voltage or temperature, can be wired into the controller through three analog inputs. A ±10 V control signal is reproduced on the feedback channel with a full-scale value of 10 V. For discrete signaling, the drive accepts eight digital inputs that capture start, stop, or jog commands, while machine status is forwarded to the control system through four digital outputs. These hardware resources support vector, encoder, and open-loop V/f control schemes without requiring external interface boards.
Functional safety is integrated through two STO inputs that remove gate pulses from the power stage during an emergency stop. Dynamic braking energy can be routed to an internal chopper that tolerates a brake current of 2 A, preventing DC-link overvoltage during rapid deceleration. The logic layer offers four virtual inputs and three virtual outputs for software interlocks. It also provides two control-word inputs for fieldbus telegrams and a single relay for isolating mains contactors. Drive profiles PP, VL, HM, CSP, and CSV permit positioning or velocity tasks, while motor tables for ASM, SM, and SynRM simplify drive setup. Encoder feedback, encoder feedback combined with model estimation, or model-only operation can be selected to match the required application accuracy.
