RD52.1-5B-055-L-FV-FW

RD52.1-5B-055-L-FV-FW, manufactured by Bosch Rexroth Indramat and part of the RD 500 Drive Controllers family, is a high-performance AC drive converter designed for demanding industrial applications. This model accepts a Nominal Connecting Voltage of 3 x AC 500 V at 50–60 Hz and delivers a continuous Rated Power of 55 kW. It features built-in flux vector control for precision torque management and an integrated brake chopper to handle regenerative energy. Housed in a robust enclosure, the unit is optimized for installation in IP54-rated switch cabinets.

Designed to maintain optimal thermal performance, the RD52.1-5B-055-L-FV-FW employs forced air cooling and operates with a PWM Frequency selectable at 4 kHz or 8 kHz. Depending on the chosen PWM setting, it provides continuous currents of 80 A (4 kHz) or 66 A (8 kHz) and supports an Output Frequency range from 0–500 Hz. The integrated brake chopper is rated for 33 kW, while the drive dissipates approximately 1.8–1.9 kW of power loss during continuous operation. At just 52 kg, this converter combines high power density with two serial communication ports (RS232 and RS485) for seamless integration into supervision and control systems.

The RD52.1-5B-055-L-FV-FW drives deliver reliable performance in automation, material handling, and machine tool applications. Its modular firmware and field-proven control algorithms simplify commissioning and tuning, reducing engineering time. Built-in protection features and a wide operating temperature span (0–40 °C) ensure consistent uptime and safe operation under fluctuating environmental conditions.