Product Description:

The RD52.2-4B-007-L-A1-FW belongs to the RD 500 Drive Controllers series manufactured by Bosch Rexroth Indramat. This drive controller regulates three-phase induction or synchronous motors in production machinery that requires precise speed and torque control. In automated lines, it combines AC power conversion, regulation, and protective circuitry in a single module so motion functions can be handled from one unit. It can be used in conveyors, process equipment, and other machine axes that depend on controlled acceleration and stable running speed.

The controller is designed for networks that supply 380 to 480 V and permits a line fluctuation of ±10%, which allows operation when incoming power varies within the stated range. Its input arrangement uses a three-phase AC converter, so the rectifier, DC link, and inverter stages are packaged together for direct connection to three-phase power. This integrated power section reduces the number of separate components required in the control cabinet. Continuous mechanical output is rated at 7.5 kW, allowing the unit to support moderate motor loads in continuous duty. Thermal management uses forced air cooling, which moves ambient air across the heat sink to keep the power semiconductors within their operating temperature range under cyclic loads.

Dynamic energy produced during deceleration is absorbed internally by a built-in brake chopper, reducing the need for additional external braking components. Closed-loop motor regulation is achieved through field-oriented vector control, which supports stable torque production across the speed range and helps the drive respond smoothly to load changes. Line-side harmonics are reduced by an integrated line filter, and the unit is part of Design generation 2. Additional features include externally supplied standby power and a starting lockout that helps prevent unintended motor rotation during service.