DKS1.1-W030B-RS01-01 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DKS1.1-W030B-RS01-01 is a digital servo drive from the DKS Intelligent Digital Servo Drives series. It features a rated current of 30 Amps and supports a maximum load current of 12 Amps across three phases. The drive uses a SERCOS command interface, has a resolver encoder type, and operates with an internal bus DC voltage of 300 V.
Internal Product Review
The DKS1.1-W030B-RS01-01 is a digital servo drive with a SERCOS command interface and 30 A rated current. Resolver feedback and 18 kHz PWM operation support precise motion response and smooth drive behavior. The drive’s 0.3 kW continuous bleeder and 5 kW peak power make this model a very capable choice for demanding servo applications.
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Product Description:
The DKS1.1-W030B-RS01-01 is a digital servo drive manufactured by Bosch Rexroth Indramat in the DKS Intelligent Digital Servo Drives series. Designed to modulate three-phase power for brushless servo motors, it links directly to motion controllers and supports precise speed and torque control in automated machinery such as pick-and-place gantries and packaging stations. As a self-contained control and power stage, it combines switching electronics with onboard processing for closed-loop motion control. This arrangement allows one unit to manage both power conversion and feedback handling within the same housing.
The drive’s continuous motor supply is rated at 30 A, which is the maximum armature current it can deliver without thermal derating. High-frequency switching occurs at 18 kHz, which supports smooth current control while keeping audible noise low. For analog feedback or trim commands, it provides a bipolar reference of ±10 V DC and a sourcing capability of 4 mA. Internally, the power section is connected to a 300 V DC link shared across the bus, and real-time command data are exchanged through the SERCOS interface. Position feedback is handled by a resolver. Auxiliary logic uses a ready-state contact rated at 24 V DC 1 A and an external device contact rated at 24 V DC 625 mA. The housing meets IP10, which provides basic protection against accidental contact.
Regenerative energy returned during rapid deceleration is routed to an internal bleeder resistor that dissipates 0.3 kW continuously and up to 5 kW in short bursts, which helps prevent DC-bus overvoltage. Reliable operation is permitted up to +55 °C, and output is derated above that temperature. The unit may be installed at elevations up to 1000 m without additional cooling. For three-phase loading, the power stage accepts peak line currents of 12 A, making it suitable for medium-inertia servo motors used on indexing tables and conveyors. These applications often impose repeated acceleration and deceleration during normal machine cycles.
