DKC03.3-100-7-FW Bosch Rexroth Indramat
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MPN: R911279431
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The Bosch Rexroth Indramat DKC03.3-100-7-FW is part of the DKC Drive Controllers series and has a maximum output current of 100 Amps and a maximum output voltage of 800 Volts. This controller provides a continuous power dissipation of 420 Watts and operates with a DC-bus nominal voltage of 700 Volts. It measures 360 mm in height, 105 mm in width, 261 mm in depth, and weighs 9.7 kilograms.
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Product Description:
The DKC03.3-100-7-FW is an EcoDrive controller from Bosch Rexroth Indramat in the DKC Drive Controllers series. Developed under design version 3, it converts rectified energy into regulated three-phase output for servo axes in automated equipment, allowing the drive to control motor torque and speed from a centralized command source. The chassis measures 360 mm high, 105 mm wide, and 261 mm deep, which supports panel integration, while interface option 03 links the unit to higher-level motion controllers for coordinated axis commands. A dedicated brake terminal supplies 2 A at 40 V DC so external resistors can absorb regenerated energy during rapid deceleration, which helps manage braking energy when the connected axis slows quickly.
The power section is dimensioned for continuous operation at 100 A across its three phases, so it can support demanding servo loads during steady operation. It is energized from a DC bus held at 700 V, derived from an incoming line that may vary within a ±10% window. Under full modulation, the drive can deliver up to 800 V line-to-line with carrier frequencies reaching 1000 Hz, supporting precise control of high-speed axes and responsive inverter switching. The internal logic and I/O circuits are powered by a 24 V DC supply that draws 26 W when the brake circuit is idle, which keeps the command electronics active during control operation. Thermal losses are limited to 420 W of continuous dissipation, and the unit accepts 40 A of incoming power through its supply connection.
The controller maintains full current output up to 45 °C and can remain in service to 55 °C with load derating, allowing continued operation as cabinet temperature rises. In fault scenarios, the power stage can withstand a prospective short-circuit current of 42,000 A rms, which helps determine upstream fuse or breaker capacity. The aluminum housing weighs 9.7 kg, which supports heat dissipation while keeping the unit manageable during mounting inside a control cabinet. Its metal enclosure also provides a rigid structure for installation beside other drive components.
Frequently Asked Questions about DKC03.3-100-7-FW:
Q: What is the maximum output current provided by the DKC03.3-100-7-FW drive controller?
A: The DKC03.3-100-7-FW drive controller can deliver a maximum output current of 100 A.
Q: What is the DC-bus nominal voltage of the DKC03.3-100-7-FW?
A: This controller operates at a DC-bus nominal voltage of 700 V.
Q: What design version is the DKC03.3-100-7-FW drive controller?
A: The design version for this controller is 3.
Q: What is the maximum ambient temperature for nominal operation of the DKC03.3-100-7-FW?
A: The maximum allowable ambient temperature for nominal operation is 45 °C.
Q: What input voltage tolerance does the DKC03.3-100-7-FW support?
A: This model supports up to a ±10% tolerance on input voltage.
