RD51.2-2B-005-L-A1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911201206
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.2-2B-005-L-A1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 5.5 kW. It supports a voltage range of 200 to 230 V and uses forced air cooling along with a built-in brake chopper. The unit features U/f curve control and includes stand-by-power external and starting lock-out functions.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.2-2B-005-L-A1-FW is a drive controller manufactured by Bosch Rexroth Indramat in the RD 500 Drive Controllers series. Installed in control cabinets, it regulates three-phase induction motors used on conveyors, mixers, pumps, and other process machinery where adjustable speed is required during normal operation. The unit receives speed references from a higher-level PLC and changes output frequency and voltage so the connected motor can follow commanded operating points while staying within acceptable thermal limits. Because it is intended for cabinet installation, it suits centralized drive systems in which power conversion, command handling, and motor protection are kept inside the main automation enclosure.
This controller operates from 200 to 230 V through a Converter 3 x AC input stage. At that supply range, it provides a continuous output of 5.5 kW, which suits mid-sized fan, pump, and conveyor applications without requiring a larger converter frame. Motor flux is managed by U/f curve control, so voltage rises with frequency to support stable torque production during acceleration and low-speed running. This method is commonly used where straightforward variable-speed control is needed for standard induction motors. Heat is removed by forced air cooling, with internal airflow passing across the heat sink and power section to carry losses away from the semiconductors.
Deceleration energy is managed by a built-in brake chopper, which helps keep the DC link within a controlled voltage range when the motor slows quickly. The controller also supports external standby power and starting lockout, allowing the control circuit to block drive startup until the required enable conditions are present. That arrangement is useful on applications that need controlled stopping without a separate external braking module. The hardware is generation 2, which places the unit in the second revision of the RD platform. This version uses the corresponding control layout and option interface for that revision.
Frequently Asked Questions about RD51.2-2B-005-L-A1-FW:
Q: Does the RD51.2-2B-005-L-A1-FW drive controller have a brake chopper included?
A: The RD51.2-2B-005-L-A1-FW integrates a built-in brake chopper for internal braking energy management.
Q: What type of control method does the RD51.2-2B-005-L-A1-FW use?
A: This model provides U/f curve control for precise speed regulation of motors.
Q: What cooling method does the RD51.2-2B-005-L-A1-FW employ?
A: Forced air cooling is used on this drive controller to maintain optimal operating temperatures.
Q: What is the rated power capacity of the RD51.2-2B-005-L-A1-FW?
A: The RD51.2-2B-005-L-A1-FW has a rated power output of 5.5 kW.
Q: What supply voltage range and type does the RD51.2-2B-005-L-A1-FW support?
A: This drive controller operates on a three-phase AC power supply and supports voltages from 200 to 230 V.
