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R911201379 (RS51.1-4G-031-L-V1-FW/S117)

RD 500 Drive Controllers

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3 Minutes 34 Seconds

The Bosch Rexroth MPN R911201379 (RS51.1-4G-031-L-V1-FW/S117) is a REFUdrive 500 series AC drive controller designed for high-speed grinding spindles. It features modular hardware and software and provides a rated power output of 31 kVA with a nominal output current of 42 A and an output frequency range of 0 to 2000 Hz. The unit is equipped with built-in brake chopper and resistor, supports forced-air cooling requiring 0.3 m³/s airflow, and operates within an ambient temperature range of 0–40°C. It is housed in an IP20 enclosure, classified under environmental class 3K3, with an approximate shipping weight of 55 kg. The braking system delivers a peak output of 49.6 kW and a continuous output of 0.9 kW, while the chopper is rated at 24.8 kW. The device supports U/F curve control and 24 V standby power. Safe operation is intended for trained personnel only.

Technical Specifications

Overload Capacity
60% for 60 seconds

Rated Output
31 kVA

Output Frequency Range
0 to 2000 Hertz

Nominal Output Current
42 Amps

Rated Output Current
52 Amps

Peak Current (60 seconds)
65 Amps

Continuous Output
25 kVA

Peak Output (60 seconds)
39 kVA

Input
Three-phase 380 to 480 Volts AC

Environmental Class
3K3

Operational Ambient Temperature Range
0 to 40 degrees Celsius

Cooling Airflow Requirement
0.3 cubic meters per second

Size Class
L

Ingress Protection Rating
IP20

Shipping Weight
55 kilograms

Brake Resistor Peak Output
49.6 kilowatts

Continuous Braking Power
0.9 kilowatts

Brake Resistor Resistance
13.3 Ohms

Chopper Power
24.8 kilowatts

Chopper Minimum Resistance
12 Ohms

Control Method
U/F curve control

Standby Power
24 Volts

Operating Personnel
Trained personnel required

Common Misspellings

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Warranty
1-year-warranty
Indramat USA 1 Year Warranty
Repair
product repair We offer a repair service for the RS51.1-4G-031-L-V1-FW/S117.
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