Product Description:

The 09.F4.S1D-4A00 is a variable-frequency inverter produced by KEB for the F4 Combivert Frequency Inverters series. In automation cells it sits between the mains and an AC motor to regulate the electrical output delivered to the machine. By modulating voltage and frequency, it lets speed, torque, and direction match process demands without mechanical gear changes.

This unit occupies a cabinet depth of 160 mm and delivers an output nominal current of 4.1 A while sustaining an output nominal power of 2.8 kVA. When paired with suitable motors, it supports a maximum rated motor power of 1.5 kW, allowing the drive to run small pumps, conveyors, or positioning tables under continuous duty. The overall height is 250 mm, so it fits readily into narrow column enclosures. Control wiring is powered from a 15 V DC digital I/O rail that sources 100 mA, and the analog setpoint circuit provides 10 V DC at 4 mA for velocity or torque references. For status signaling, a form-C relay is rated at 1 A and 30 V DC, enabling direct connection to PLC input cards without intermediate relays. Each mounting flange includes 5 mm holes for rigid fastening and proper thermal contact with the panel surface.

The housing spans a width of 90 mm, conserving rack space while leaving room for airflow around neighboring equipment. A dynamic braking transistor limits deceleration energy, permitting a peak braking current of 10 A into an external resistor network. The minimum resistor value accepted is 160 Ω, and many installations use the recommended typical resistor of 390 Ω to balance heat dissipation with stopping time. This braking function is useful where short deceleration intervals are required. During quick ramps the drive supervises resistor temperature and duty cycle, preventing overloads that could damage the braking path during repeated stopping events.