Product Description:

The FVCA01.1-55K0-3P4-MDA-LP-P001-01V01 is a frequency converter built by Bosch Rexroth Indramat within the FVCA Frequency Converters series. It accepts three-phase power and converts it into variable voltage and frequency output for precise induction motor speed regulation in automated production cells. The unit combines a standard full-version package with dimensions suited to Series Line 01 equipment.

It draws power from a three-phase 380 to 480 V AC supply and operates best at the nominal bus level of 400 V. Under these conditions, it delivers 55.0 kW of mechanical output while presenting 75.0 kVA of apparent load to the upstream switchgear. Rated input and output currents are 119 A and 110.0 A, respectively, and an internal brake chopper is provided but requires an external resistor for energy dissipation. The converter uses frame size F, measures 650 mm high, 325 mm wide, and 265 mm deep, weighs 39.0 kg, and has an IP20 enclosure for cabinet mounting in industrial Class C3 environments. A relay contact rated 230 VAC / 30 VDC at 3 A is available for status signaling, operational data appear on an LCD panel, a front-mounted potentiometer enables manual trimming, and ModBus serves as the fieldbus interface. Power-on identifiers include design revision 1, release number 01, and firmware version 01.

Control functions are executed by a PID regulator that supports V/f, SVC, and full field-oriented control schemes. In FOC mode, the drive provides 200 % at 0 Hz startup torque, maintaining accuracy over a 1:100 sensorless range or 1:1000 with an encoder. Frequency commands are processed with an analog limit of 0.05 %, a digital tolerance of 0.01%, and a resolution of 0.01 Hz. A carrier frequency of 2.0 kHz feeds an SVPWM modulator that helps keep motor currents sinusoidal while staying within the Class C3 emission limit.