Product Description:

The 12.F5.C1B-ALC3 is an AC axis inverter developed by KEB for the F5 Combivert Axis Drives series. As a designated elevator drive module, it converts a six-phase mains supply into regulated motor voltage and frequency so that car acceleration, leveling, and door movement remain repeatable in industrial and commercial lifting systems. Engineered for panel mounting in machine rooms, the unit integrates application-specific safety terminals and monitoring routines used throughout the line. Its control approach suits installations that need steady travel behavior and predictable stopping performance over repeated cycles.

The drive offers 2 analog inputs and matching analog outputs, while 8 digital inputs and two transistor outputs handle direction, speed, and door interlocks. A bank of 29 control terminals and dual relay outputs provides galvanic isolation for brake contactors or fault signaling. I/O transactions are refreshed every 2 ms, and eight parameter sets can be stored for different car capacities or gear types. With a 5 HP motor power ceiling, inverter size code 12, and a compact control type, the module stays small. The control layer also exposes four software I/O channels, a Hiperface and initiator encoder port, and allows PNP or NPN signal referencing without jumper changes.

On the power side, the inverter accepts 6-phase 400 V AC supply lines and moves energy through an internal braking transistor that works with the GTR7 chopper to dissipate excess regenerative power. Heat is removed by convection cooling, so no forced airflow is required. The unit can modulate output frequency up to 800 Hz, giving overhead for permanent-magnet machines supervised through the encoder interface. Because the signal layer is PNP/NPN switchable, field wiring can follow either sourcing or sinking conventions without additional adapters. This helps the inverter fit mixed control schemes without extra interface hardware.