Product Description:

Bosch Rexroth Indramat manufactures the FCS01.1E-W0019-A-04-NNBV as part of the FCS Frequency Converters series. This unit converts fixed-frequency three-phase mains power into a variable-frequency output so an induction motor can be adjusted for speed and torque in automated material-handling, packaging, or process lines. That control method lets the drive match motor operation to changing process demand instead of running at one constant line frequency. Dynamic energy from rapid stops is routed to an external braking resistor through the integrated brake transistor, which helps prevent intermediate-circuit overvoltage.

It accepts 3 x AC 380...480 V from a three-phase network at 50/60 Hz, and its electronics draw energy directly from the mains. The converter’s rated capacity is 4 kW, and at that load it can deliver 19 A of output current while remaining within the thermal limits of the integrated blower. Regulation is executed with Sensorless Vector Control, allowing field-oriented torque production without encoder feedback. Motor speed can be adjusted through a linear V/f curve or by using a carrier frequency up to 400 Hz. For installation inside a switch cabinet, the housing has an IP20 degree of protection, and frame size C keeps the footprint consistent with other drives in this power class.

In short-term events, the drive can supply 200% of rated current for 5 seconds or 150% for 60 seconds, allowing quick acceleration or deceleration. Switching devices are modulated up to 16 kHz, which helps reduce motor acoustic noise and keep current ripple low. The unit provides a DC 24 V supply that keeps the control electronics active during mains interruptions and permits bus coupling, with voltage held at DC mains × 1.41. Design version 1 under line code 1 uses the feeding topology and returns regenerated power to the shared link, while an open-loop mode remains available for applications that do not require vector-based regulation.