12.56.20A-3389 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 12.56.20A-3389 is part of the F5 Combivert Axis Drives series and supports an input voltage of 380 to 415 V AC across three phases. It has a rated current of 9.5 Amps, can deliver up to 5 HP motor power, and includes a protection rating of IP00. The device features a TTL auxiliary signal output and a UVW encoder interface, with a maximum installation altitude of 3000 meters.
Internal Product Review
The 12.56.20A-3389 is a KEB F5 Combivert axis drive built for three-phase operation at 380/400/415 V AC. A UVW encoder interface and TTL auxiliary signal output support clean feedback integration and dependable signal handling. The 9.5 A rating and 5 HP motor capacity make the drive a strong fit for consistent axis-control duty.
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Product Description:
The 12.56.20A-3389 is an AC axis inverter manufactured by KEB as part of the F5 Combivert Axis Drives series. It converts fixed utility power into regulated three-phase output so packaging machines, gantry pick-and-place systems, and material-handling stations can modulate motor speed and torque electronically. Acting as the power bridge between a motion controller and its motor, the drive supplies precisely timed electrical waveforms required for coordinated positioning and consistent process throughput.
On the line side, the inverter accepts three-phase input at 380/400/415 V AC and operates across a power-grid frequency range of 50/60 Hz. Under nominal load, it conducts 9.5 A, so KEB specifies a feeder fuse of 20 A for circuit protection. Internal semiconductor fuses F1, F2, and F3 are rated at 600 V / 16 A, 500 V / 10 A, and 500 V / 1 A to disconnect the DC link if a fault occurs. The unit has inverter size code 12 and housing form factor A. Because the enclosure has a protection level of IP00, it must be mounted inside a ventilated cabinet. Rectification and DC buffering of the three input phases allow the control section to sustain stable flux during brief mains disturbances.
On the motor side, the drive delivers up to 5 HP and produces an adjustable output identified as 3 x 0–U Mains. A UVW encoder channel provides position feedback, and auxiliary status pulses are presented in TTL logic. Operation is permitted at elevations up to 3000 m without derating, and the terminals accept conductors up to 2.5 mm². The encoder input allows the inverter to monitor shaft position during closed-loop motion. Its moderate power capacity supports compact hoists, indexing tables, and small process pumps that require precise speed or position control. Cabinet installation also protects the open enclosure while providing the airflow required by the power electronics.
