Product Description:

The RD52.1-4B-132-R-V3-FW is a three-phase AC drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It regulates induction and synchronous motors in automated machinery by converting incoming mains power into controlled motor voltage and frequency. Closed-loop control allows the drive to maintain commanded speed and torque as process load changes during operation. This makes the unit suitable for demanding equipment such as production lines, pumps, mixers, and material-handling systems.

It uses field-oriented vector control, which regulates motor flux and torque independently for accurate response across a wide speed range. That control method helps the motor stay stable during acceleration, deceleration, and varying mechanical load. The controller is rated for 132 kW of continuous output, making it suitable for larger process equipment that requires sustained power. A three-phase AC converter input connects directly to industrial mains, and nominal operation is supported on 380 to 480 V supply lines. The power section also tolerates line variation of ±10 % without derating, which helps the drive remain stable when plant voltage shifts within the normal operating range.

Thermal control is handled by liquid cooling with an internal pump, which removes heat from the power section while reducing heat buildup in the cabinet. Regenerated energy during deceleration is managed by a built-in brake chopper, helping protect the DC bus during rapid speed changes and frequent stopping cycles. The drive also includes an integrated mains filter to reduce conducted interference on the supply connection and support cleaner electrical operation. Its function package of V1 + W1 + Z1 combines standard speed control, positioning capability, and communication features in one configuration. The unit is listed as design generation 1.