DKR03.1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DKR03.1 is part of the DKR Drive Controllers series and is classified as a digital intelligent AC drive controller. It operates with a rated power voltage of 3-phase AC 400 to 480 V, supports a control voltage of AC 230 V, and features an IP20 protection category. The controller measures 690 mm in height, 390 mm in width, and 310 mm in depth.
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Product Description:
The DKR03.1 is a Digital Intelligent AC Drive Controller in the DKR Drive Controllers series from Bosch Rexroth Indramat. It serves as the central power stage for closed-loop positioning axes by converting plant power into controlled three-phase output for servo and spindle motors used in packaging, metal-cutting, and material-handling equipment. Regenerative braking circuitry, field-oriented current control, and communication interfaces are integrated into the unit, helping it maintain precise speed and torque control during demanding industrial cycles. This layout supports repeatable motion on machines where acceleration, deceleration, and spindle speed must remain stable as load conditions change during continuous production.
The controller draws control power of 200 VA and accepts a control voltage of AC 230 V ±10%, which keeps the logic sections separate from the main bus. Its auxiliary brake dissipates 1 kW continuously, handles peak loads of 40 kW, and can absorb 150 kWs of energy during rapid deceleration. The internal IGBT bridge delivers output frequencies up to 1600 Hz at an 8 kHz carrier, which supports high-speed spindle operation and responsive motor control across a wide speed range. It operates from a three-phase 400 to 480 VAC supply with a ±10% tolerance, and the product is in line 03 with design version 1.
For cabinet installation, the unit requires at least 80 mm of clearance above and below so airflow is not restricted. The drive can operate at full power up to 45 °C, and derating is permitted up to 55 °C. Reliable service is maintained up to 1000 m elevation without additional cooling, and the housing has an IP20 rating for enclosed-panel mounting. The unit has a depth of 310 mm, a width of 390 mm, and a height of 690 mm, and the three-phase bus bars are arranged to match this footprint for straightforward cabinet layout and predictable routing inside the enclosure.
Frequently Asked Questions about DKR03.1:
Q: What is the continuous auxiliary brake power rating for the DKR03.1 drive controller?
A: The DKR03.1 provides a continuous auxiliary brake power of 1 kW for controlled deceleration tasks.
Q: What is the auxiliary brake peak power of the DKR03.1?
A: The maximum peak power available for the auxiliary brake on DKR03.1 is 40 kW.
Q: What is the rated power voltage specified for the DKR03.1 drive controller?
A: This controller operates with a rated power voltage of 3xAC 400 to 480 V, with a tolerance of plus or minus 10 percent.
Q: What level of protection does the DKR03.1 drive controller offer?
A: The DKR03.1 is protected by an IP20 rating, which limits exposure to solid foreign objects but does not provide protection against water.
Q: What is the maximum output frequency capability of the DKR03.1 controller?
A: The DKR03.1 supports a maximum output frequency of 1600 Hz when operating at 8 kHz switching frequency.
