Product Description:

The RS51.1-4G-014-L-V1-FW is a basic drive from Bosch Rexroth Indramat in the RD 500 Drive Controllers series. It acts as a three-phase converter for induction motors, delivering adjustable voltage and frequency to support conveyor lines, pumps, and fans within automated cells. Built around generation 1 hardware, the unit incorporates U/f curve control so machine builders can regulate motor torque without closed-loop feedback.

The drive connects to a 3 × AC mains between 380 to 480 V and maintains output within a ±10 % tolerance band. Its rated apparent power is 14 kVA, available continuously on the S6 duty cycle where the current reaches 23 A. When short bursts are needed, the controller raises output to 18 kVA with 29 A for 60 s and can supply 11 kVA on extended S6 profiles. The inverter section sweeps output frequency up to 2000 Hz, enabling operation of high-speed spindles or specialized centrifugal equipment. The housing carries an IP20 degree of protection, so the unit must be installed inside a control cabinet. Additional features include an integrated mains filter that satisfies radio-interference class A1, an internal brake chopper with a 30 Ω resistor, and standby capability from an external 24 V source.

Thermal and dynamic limits are managed by the integrated braking network; it dissipates 0.6 kW continuously and tolerates 11.4 kW for one-second surges when DC-link energy rises during heavy deceleration. The external resistor must not fall below 27 Ω if an auxiliary brake element is added. Forced-air cooling moves 0.1 m³/s through the heat sink, supporting the controller’s operation in environmental class 3K3 areas. The assembly fits mechanical size K, weighs 33 kg, and relies on a built-in filter to reduce conducted emissions while the standby 24 V supply keeps control logic active during mains isolation.