RD52.2-4B-018-L-A2-FW/S122 Bosch Rexroth Indramat
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MPN: R911201179
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The Bosch Rexroth Indramat RD52.2-4B-018-L-A2-FW/S122 is a drive controller from the RD 500 Drive Controllers series. It features field oriented vector control and a rated power of 18.5 kW, with a voltage range of 380 to 480 V and built-in brake chopper. The controller has an integrated mains filter and uses forced air cooling.
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Product Description:
The RD52.2-4B-018-L-A2-FW/S122 is a modular drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Intended for variable-speed regulation of three-phase induction or synchronous motors in automated machinery, the unit manages torque and speed while interfacing with higher-level PLCs. Its integrated power stage, control electronics, and protection circuitry consolidate motor-control functions into a single enclosure suited to conveyor lines, packaging cells, and process equipment that benefit from vector-based regulation, while also helping conserve cabinet space in centralized drive installations.
The power section accepts a three-phase mains supply within 380 to 480 V, and operation remains stable across line fluctuations thanks to a tolerance of ±10 %. Classified as a 3 x AC converter, it rectifies and inverts the incoming grid energy to produce sinusoidal output under field-oriented vector control. This control method enables dynamic torque response at low speeds and supports precise flux alignment during changing load conditions. Continuous mechanical output is rated at 18.5 kW, providing suitable capacity for mid-range pump, fan, or extruder drives. A built-in brake chopper dissipates regenerated energy during rapid deceleration, helping protect bus components during high-inertia stops.
Thermal management is based on forced-air cooling, so mounting space must allow unimpeded airflow through the heat sink channel. The controller belongs to design generation 2, which keeps internal layouts and connector positions consistent across the RD 500 portfolio. Support functions include external stand-by power with starting lockout, allowing safe energization sequences and reduced idle consumption while helping prevent unintended startup after power is applied. Drive-side electromagnetic compliance is assisted by the integrated mains filter, which reduces line-borne noise and simplifies panel design in installations that require cleaner power connections.
Frequently Asked Questions about RD52.2-4B-018-L-A2-FW/S122:
Q: Does the RD52.2-4B-018-L-A2-FW/S122 include a brake chopper?
A: This drive controller is equipped with a built-in brake chopper, allowing dynamic braking without additional external components.
Q: What type of control method does the RD52.2-4B-018-L-A2-FW/S122 utilize?
A: The RD52.2-4B-018-L-A2-FW/S122 uses field oriented vector control for precise and responsive motor operation.
Q: How is the RD52.2-4B-018-L-A2-FW/S122 cooled?
A: Forced air cooling is implemented in this model to maintain optimal operating temperatures during use.
Q: What is the rated power output of the RD52.2-4B-018-L-A2-FW/S122 drive controller?
A: The RD52.2-4B-018-L-A2-FW/S122 is rated for a power output of 18.5 kW.
Q: What supply voltage range does the RD52.2-4B-018-L-A2-FW/S122 require?
A: This drive controller operates with a voltage range of 380 to 480 V AC three-phase supply.
