Product Description:

The 18.F5.A1G-34GA is an AC drive produced by KEB as part of the F5 Combivert Axis Drives series. It uses inverter size code 18 and the G housing form factor, which identify its mechanical envelope within multi-axis cabinets. Classified by KEB as an application control type, the device provides programmable motion sequences through a standard control board. The unit uses a standard varnished cooling style that channels ambient air across the power stage. An incremental-to-incremental encoder interface lets the drive process dual feedback streams for speed and position regulation in automated production cells.

An integrated GTR7 braking transistor is included, giving the drive dynamic absorption of regenerated energy when the connected motor decelerates. With a maximum motor rating of 30 HP, the unit covers mid-range conveyor, pump, or spindle duties on a three-phase 400 V AC/DC supply. The power module delivers a continuous output of 50 A, while overcurrent protection triggers at 180% of that value to protect the semiconductors during fault conditions. Switching devices can be clocked up to 8 kHz, which helps produce smoother torque for motors that benefit from higher PWM frequencies. This braking arrangement supports applications that see frequent deceleration and changing load demand.

During normal operation, the inverter runs at a rated switching frequency of 2 kHz, a setting that balances thermal stress and electromagnetic noise when lower acoustic output is not required. Transient events such as acceleration peaks are handled by a permissible current surge of 75 A, and the short-time current ceiling of 150% maintains usable torque for brief overloads without exceeding semiconductor limits. Current reserves help the drive support coordinated axis motion during changing load conditions while keeping the power stage within its thermal operating range.