Product Description:

The Bosch Rexroth Indramat RD51.2-5B-007-L-A2-FW belongs to the RD 500 Drive Controllers series and is intended for variable-speed regulation of three-phase induction motors in automated machinery. By modulating the applied frequency and voltage, the unit coordinates motion sequences, conveyor speeds, and process setpoints while integrating with higher-level PLC architectures through the series' standardized interfaces. Within plant layouts, it sits between the mains supply and the motor, converting fixed-frequency input power into the variable output needed for efficient equipment control.

Its continuous output capacity is rated at 7.5 kW, indicating the nominal motor power supported under normal operating conditions. The input section is designed for a supply centered on 500 V, which suits industrial three-phase systems in this voltage class. Because the supply stage is a three-phase AC converter, the device rectifies and inverts the incoming mains without requiring an external transformer. Motor excitation is regulated by U/f curve control, which adjusts voltage in proportion to frequency to maintain flux over the speed range. Thermal management relies on forced-air cooling, allowing close cabinet installation while helping internal components remain within their temperature limits.

A built-in brake chopper dissipates regenerated energy during rapid deceleration, helping protect the DC bus from overvoltage. The controller can be held in a low-energy state through the external standby power function, and inadvertent restarts are prevented by the dedicated starting lockout circuit. Hardware belongs to design generation 2, which supports compatibility with current RD 500 option modules. The unit combines power conversion, braking control, and restart prevention in a single module.