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R911201174 (RS51.1-4G-050-V-NN-FW)

RD 500 Drive Controllers

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The Bosch Rexroth MPN R911201174 (RS51.1-4G-050-V-NN-FW) is an AC drive from the REFUdrive 500 series, intended for motor control in high-speed grinding spindle applications. The unit features a modular hardware and software design, with a rear-cooled power section that supports external forced ventilation. It provides an integrated brake chopper and a 50 kVA resistor, supports a nominal input voltage of 3× AC 380-480 V, and delivers output frequencies from 0 to 1000 Hz with a current range of 66-83 A. The device includes radio interference suppression and a line reactor, and operates within an ambient temperature of 0–40°C, requiring 0.4 m³/s airflow for cooling.

Technical Specifications

Cooling Type
Rear Cooling with Forced Ventilation Option

Voltage
380 to 480 Volts AC (three-phase)

Additional Features
Integrated Brake Chopper and Resistor

Output Power Rating
50 kVA

Output Frequency Range
0 to 1000 Hertz

Nominal Drive Current
66 Amps

Rated Current
83 Amps

Peak Output Power
63 kVA for 60 seconds

Environmental Class
3K3 as per DIN IEC 721-3-3

Cooling Airflow Requirement
0.4 cubic meters per second

Ideal Ambient Temperature
0 to 40 degrees Celsius

Protection Level
IP20

Weight
Approximately 80 kilograms

Shipping
Global Availability.

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1620 Old Apex Road
Cary, NC 27513, USA

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Fax: 1-919-867-6204

[email protected]

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Indramat USA 1 Year Warranty

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We offer a repair service for the RS51.1-4G-050-V-NN-FW.

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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Toll Free: 1-888-551-3082
International: 1-919-443-0207

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.