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DKS01.1-W050A-RS18-01 Bosch Rexroth Indramat

MPN: R911268459

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The Bosch Rexroth Indramat DKS01.1-W050A-RS18-01 is part of the DKS Intelligent Digital Servo Drives series and weighs 11 kilograms. This digital servo drive operates with a rated current of 50 Amps and has a power requirement of 9.5 kVA. It uses a heat dissipation cooling method and features an input voltage of 3 x 230 V AC at 50/60 Hz.

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Product Description:

Bosch Rexroth Indramat manufactures the DKS01.1-W050A-RS18-01, part of the DKS Intelligent Digital Servo Drives series. This compact 11 kg unit functions as a digital servo drive. It converts fixed-frequency mains power into a controlled DC bus and a pulse-width-modulated output, providing closed-loop torque and speed regulation for resolver-feedback servomotors used in industrial positioning axes. Its control structure supports accurate motion in applications that require stable response during acceleration, deceleration, and speed holding.

The drive connects to a three-phase supply of 3 × 230 V AC ±10% at 50/60 Hz through terminals protected to IP10. It draws 50 A of continuous line current and can deliver a peak phase current of 50 A to the motor. Both its apparent and rated power requirements are 9.5 kVA, feeding an internal DC link stabilized at 300 V DC. An external bus at the same voltage lets multiple drives share returned energy during coordinated motion, which helps limit wasted braking energy in multi-axis systems. Resolver feedback is processed by version 1 control electronics, and the standard-noise design uses passive heat dissipation to keep semiconductor temperatures within limits.

Thermal performance and installation limits support continuous operation. At maximum load, the inverter losses, excluding the braking network, reach 305 W, which are removed by natural heat dissipation through the housing. Dynamic deceleration energy is absorbed by a bleeder that handles 0.35 kW continuously and up to 9.4 kW in short pulses. The power stage switches at 4 kHz, balancing motor smoothness with switching loss in the power electronics. The unit operates in ambient temperatures up to 55 °C and at installation altitudes up to 1000 m without derating. Humidity class F under DIN 40040 and standard acoustic emission support cabinet installation.

Apparent Power At Max Load
9.5 kVA
Bleeder Continuous Power
0.35 kW
Bleeder Peak Power
9.4 kW
Cooling Method
Heat dissipation
Dc Bus Voltage
300 V
Feedback Type
Resolver (RSF)
Humidity Class
F (DIN 40040)
Input Voltage
3 x 230 V AC (±10%)
Internal Dc Bus Voltage
300 V DC
Mains Frequency
50/60 Hz
Max Ambient Temperature (derated)
55 °C
Max Device Power Loss
305 W
Max Elevation Without Derating
1000 m
Max Installation Altitude
1000 m
Noise Emission
Standard
Peak Current
50 A
Power Loss At Max Load (excl. Bleeder)
305 W
Product Type
Digital Servo Drive
Protection Class
IP10 (DIN 40 050)
Pwm Frequency
4 kHz
Rated Current
50A
Rated Power Requirement
9.5 kVA
Version
1
Weight
11 kg
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Frequently Asked Questions about DKS01.1-W050A-RS18-01:

Q: What is the apparent power at maximum load for the DKS01.1-W050A-RS18-01 servo drive?

A: The DKS01.1-W050A-RS18-01 provides an apparent power at maximum load of 9.5 kVA.

Q: What type of feedback does the DKS01.1-W050A-RS18-01 servo drive use?

A: This model features a resolver (RSF) feedback type for accurate position control.

Q: What input voltage does the DKS01.1-W050A-RS18-01 require?

A: The rated input voltage for this servo drive is 3 x 230 V AC with a ±10% tolerance.

Q: What is the peak current capacity of the DKS01.1-W050A-RS18-01?

A: Its maximum peak current is 50 A, supporting high-demand servo applications.

Q: What is the maximum installation altitude for the DKS01.1-W050A-RS18-01 servo drive?

A: The DKS01.1-W050A-RS18-01 is rated for operation at altitudes up to 1000 meters without derating.


Internal Product Review

  • ‘‘The DKS01.1-W050A-RS18-01 is a Bosch Rexroth Indramat digital servo drive with 3 x 230 V AC input and 50 A rated current. Resolver feedback and a 4 kHz PWM frequency support stable motion control and clean drive response. A strong performer for demanding servo systems, especially where 9.5 kVA capacity is a key requirement.’’

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