Product Description:

The RD52.1-4N-132-R-V1-FW/S110 is a drive controller manufactured by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It is intended for three-phase AC induction and synchronous motor installations where closed-loop regulation is required for conveyors, pumps, or processing lines. It can regulate speed or torque in applications that must remain stable during changing mechanical demand, including moving loads, pump starts, and synchronized line sections. By adjusting inverter output from feedback signals, the controller helps the motor respond predictably during acceleration, steady operation, and load disturbances.

This controller is rated for 132 kW of continuous motor power and accepts supply power through a three-phase AC converter input. The permissible mains window spans 380 to 480 V, and the regulation circuits tolerate variation within ±10% without derating. Vector routines based on field-oriented vector control calculate rotor flux in real time, so dynamic torque is available from zero speed upward. This control method supports stable low-speed operation and helps the drive recover smoothly when the connected machine experiences sudden load changes. The design does not include an internal brake chopper, so applications with rapid deceleration require an external dissipative resistor for braking energy.

Thermal management relies on liquid cooling with an internal pump, which helps keep semiconductor temperatures stable during high-current operation in enclosed cabinets. An integrated mains filter reduces conducted interference, which can limit the need for additional line filtering in many panel layouts. The control electronics can remain active through 24 V standby power, allowing status communication and drive-ready signaling when incoming power is isolated. This makes it possible for supervisory functions to remain available while the main power section is off. The unit is part of design generation 1, which keeps its mechanical dimensions and connector pinout consistent with other modules from the same generation.