Product Description:

The 00.F4.071-002C belongs to the F4 Combivert Frequency Inverters series manufactured by KEB. It converts fixed-frequency mains power into a variable output so connected motors can accelerate, decelerate, and maintain commanded speed under PLC supervision. Within the unit, the X3 low-voltage terminal block serves as the main control interface for enable commands, feedback contacts, and reference signals. This arrangement supports integration into industrial systems such as conveyors, pumps, and material-handling axes.

The X3 header provides 5 discrete digital outputs, allowing the drive to send ready, fault, or process status signals to external controllers. Each output channel can source up to 500 mA, which is sufficient for small relays without requiring additional drivers. Insulation limits the voltage between any X3 point and protective ground to 100 V, helping protect connected control circuits from common-mode spikes. A single contactor command line is included, and this hardwired safety input is counted as 1 contactor input that can disconnect the power stage when opened. For speed or torque references, the inverter accepts 6 setpoint inputs that can be wired for analog voltage, analog current, or fast digital pulse signals, depending on the application.

Hardware signaling is further supported by 3 Form C relay outputs on the same connector. These relay contacts can switch loads up to 30 VDC for indicators or interlock functions. The DC-link supervision circuit operates with a hysteresis window of 6 %, so an alarm is generated only after the link voltage falls back from an over-threshold event by that margin. Separately, the logic output stages switch with an output hysteresis of 12 %, which helps maintain clean transitions when reference signals hover near the switching threshold. Relay contacts and solid-state outputs can therefore be used for separate monitoring and control functions on the same inverter.