12.F4.S1D-4A01 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 12.F4.S1D-4A01 is part of the F4 Combivert Frequency Inverters series and features a maximum motor power of 4 kW with an output nominal current of 9.5 A. The inverter has five digital inputs, one analog input, one analog output, and a protection rating of IP20. It is designed for three mains phases and supports a shielded motor line length of up to 100 meters.
Internal Product Review
The 12.F4.S1D-4A01 is a KEB F4 Combivert frequency inverter that stands out in three-phase installations with IP20 protection. Drive performance is well balanced for industrial duty, with 4 kW maximum motor power and 9.5 A output nominal current. A shielded motor line length up to 100 m adds valuable installation flexibility.
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Product Description:
The 12.F4.S1D-4A01 is a frequency inverter produced by KEB within the F4 Combivert Frequency Inverters series. The unit converts fixed-frequency three-phase mains power into a variable output so that induction motors can be started smoothly, regulated across speed ranges, and protected from mechanical shock. In automated plant equipment, such control improves energy efficiency and provides coordinated motion when tied to PLC or fieldbus controls. It is suited to applications where motor speed must follow changing process demand instead of remaining at full speed whenever the machine is running.
Electrically, the inverter operates on a three-phase mains input and draws a nominal current of 10.5 A while delivering an output current of 9.5 A under rated load. For brief acceleration or stall conditions, it can supply 17.1 A, and an overcurrent trip is set at 20.9 A to protect the power devices. The power section is sized for motors up to 4 kW. Thermal limits are supervised by a heat-sink sensor, and operation must remain below 73 °C to avoid derating. Command flexibility is provided by one analog input, one analog output, five digital inputs, and a 15 VDC auxiliary supply for the logic channels. The available control points allow the drive to accept run commands, reference signals, and basic status handling from surrounding automation hardware.
The drive’s control side accepts a speed reference through a potentiometer circuit that the inverter feeds with 10 VDC, and the setpoint channel presents 56 kΩ of input resistance to upstream controllers. Continuous apparent power capability reaches 6.6 kVA, enabling full torque across the specified speed range. The electronics reside in an enclosure rated IP20, so installation inside a switchgear cabinet is required to protect the unit from accidental contact and airborne contamination. Motor leads can be routed with up to 100 m of shielded cable without violating the drive’s switching frequency limits or causing excessive capacitive current. This routing allowance supports layouts in which the motor is installed some distance from the cabinet.
