DKC03.3-040-7-FW Bosch Rexroth Indramat
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MPN: R911279428
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The Bosch Rexroth Indramat DKC03.3-040-7-FW is an EcoDrive controller in the DKC Drive Controllers series that weighs 5.7 kilograms and measures 360 mm high, 65 mm wide, and 261 mm deep. This controller supports a maximum output current of 40 Amps, a DC-bus nominal voltage of 700 V, and operates at output frequencies up to 1000 Hz with a max output voltage of 800 V. It features a control supply voltage of 24 V, power dissipation of 180 W, and a short-circuit current rating of 42000 Amps rms.
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Product Description:
The DKC03.3-040-7-FW is a drive controller produced by Bosch Rexroth Indramat for the DKC Drive Controllers series. Design code 3 and version 3 place it within the EcoDrive product line. The device accepts energy from the internal DC bus and modulates it into three output phases for closed-loop speed, position, and torque regulation in automated machinery. It is used as the power stage between the machine supply architecture and a servo or spindle motor. By regulating output current in response to feedback, it supports accurate motion during acceleration, constant-speed running, and controlled stopping. Physical dimensions of 360 mm in height, 65 mm in width, and 261 mm in depth, together with an interface option 03 connector set, support installation in compact multi-axis cabinets. It requires 80 mm of bottom clearance and 150 mm of top clearance so cooling air can move through the housing.
The power section can deliver a continuous load of 40 A to the motor terminals, while the short-circuit rating reaches 42 kA rms. Output voltage reaches 800 V, and carrier modulation supports frequencies up to 1000 Hz for high-resolution current control. This switching behavior helps the drive maintain stable motor current across changing load conditions. A nominal DC-bus value of 700 V ties the unit to shared rectifier supplies, and the line side draws a maximum of 16 A. Thermal losses are limited to 180 W during continuous duty, and a separate control electronics section adds another 21 W of consumption. The controller provides a three-phase output that can operate synchronous and asynchronous motors.
Auxiliary circuits rely on a logic rail of 24 V, and the internal brake chopper can loop through up to 10 A when an external brake supply does not exceed 40 V DC. Total mass is 5.7 kg, which makes the unit easier to mount in a control cabinet. The required clearances promote airflow and help manage continuous heat dissipation during sustained operation. Clearly marked top and bottom edges help maintain the correct mounting orientation beside adjacent modules. The slim housing also helps the controller fit into dense cabinet layouts without obstructing neighboring equipment.
Frequently Asked Questions about DKC03.3-040-7-FW:
Q: Which design version is assigned to the DKC03.3-040-7-FW drive controller?
A: The DKC03.3-040-7-FW drive controller is a Design Version 3 model.
Q: What is the maximum output current supported by the DKC03.3-040-7-FW?
A: The maximum output current for the DKC03.3-040-7-FW is 40 A, supporting high-powered motors.
Q: What is the DC-bus nominal voltage of the DKC03.3-040-7-FW?
A: This unit operates with a DC-bus nominal voltage of 700 V, making it compatible with high-voltage applications.
Q: What is the highest output frequency provided by the DKC03.3-040-7-FW?
A: The maximum output frequency of the DKC03.3-040-7-FW is 1000 Hz, enabling fast response motor control.
Q: What is the maximum brake supply voltage for the DKC03.3-040-7-FW?
A: The maximum allowable brake supply voltage for this model is DC 40 V, ensuring compatibility with standard brake systems.
