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R911200138 (RS51.1-4G-031-L-NN-FW)

RD 500 Drive Controllers

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The Bosch Rexroth MPN R911200138 (RS51.1-4G-031-L-NN-FW) is a drive control device designed for regulating three-phase induction motors in high-speed grinding spindle applications. It delivers a rated power output of 31 kVA and supports variable frequency operation from 0 to 2000 Hz, utilizing a pulse-width-modulated output voltage and U/f curve control method. The unit has a nominal connecting voltage of 3 x AC 380-480 V and includes built-in brake chopper and resistor, with a continuous brake power of 0.9 kW. It is equipped with forced air cooling and is rated for environmental class 3K3 and interference suppression level A1. The device has IP20 protection, weighs approximately 55 kg, and is specified for operation at altitudes up to 1000 meters and ambient temperatures from 0 to +40 °C. Firmware is supplied separately.

Technical Specifications

Product Type
Drive Converter

Weight
55 kg

Environmental Class
3K3

Radio Interference Suppression
A1

Control Approach
U/f Curve Control

Physical Dimensions
770 x 270 (Length x Width)

Power Output
31 kW

Output Frequency Range
0 to 2000 Hz

Nominal Current Consumption
42 A

One-Minute Peak Power Output
39 kW

Constant Power Output
25 kW

Cooling Method
Liquid cooled

Protection Rating
IP20

Altitude Limit
1000 meters

Temperature Range
0 to +40 degrees Celsius

Continuous Brake Power
0.9 kW

Resistance Value
12 ohms.

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1620 Old Apex Road
Cary, NC 27513, USA

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

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[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-031-L-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.