DKC04.3-016-7-FW Bosch Rexroth Indramat
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MPN: R911292830
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The Bosch Rexroth Indramat DKC04.3-016-7-FW is part of the DKC Drive Controllers series and is classified as an EcoDrive product type. This controller operates with a DC-bus nominal voltage of 700 V and a rated current of 16 A. It features a max brake voltage of 36 V and a max brake continuous current of 1 A.
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Product Description:
The DKC04.3-016-7-FW is a modular drive controller manufactured by Bosch Rexroth Indramat as part of the DKC Drive Controllers series. It is used with synchronous or asynchronous servo axes that require precise torque and velocity control. In an automation cabinet, the unit converts three-phase mains power to an internal DC link and supervises brake circuits, serving as the central power stage of EcoDrive systems in packaging, handling, and printing equipment. It supports coordinated motion tasks where stable current control and dependable braking behavior are needed during repeated starts, speed changes, and stops. This arrangement helps the drive manage motor power and brake control from one cabinet-mounted unit.
The internal DC link is stabilized at 700 V, and the power electronics are rated for an output current of 16 A. This current allows the connected axis to draw continuous motor current without thermal derating in normal operation. A built-in brake chopper controls the holding-brake circuit, where continuous brake current may reach 1 A and the inductive load is limited to 100 µH. Brake voltage is restricted to 36 V, which helps limit coil heating and matches common 24 to 36 V machine-safety supplies. These limits keep the brake output suited to typical holding-brake coils used on servo axes.
Contact resistance inside the brake relay contributes only 100 mV of drop, helping preserve voltage at the actuator. For insulation, the minimum wire-to-ground potential is 750 V, and the ground conductor must have a cross section of at least 10 mm². Brake wiring must be no smaller than 1 mm² to stay within the permitted temperature rise and to maintain reliable current flow to the brake coil. These grounding and insulation requirements support standard industrial cabinet installation practices. As an EcoDrive module, the controller uses design 3 mechanics with option 04 communications for compact installation and straightforward connection of fieldbus and encoder wiring.
Frequently Asked Questions about DKC04.3-016-7-FW:
Q: What is the DC-bus nominal voltage of the DKC04.3-016-7-FW drive controller?
A: This model features a DC-bus nominal voltage of 700 V, making it suitable for compatible high-voltage systems.
Q: What is the maximum brake switching current for the DKC04.3-016-7-FW?
A: The maximum brake switching current supported by this unit is 1 A.
Q: What is the maximum brake voltage handled by the DKC04.3-016-7-FW?
A: The DKC04.3-016-7-FW supports a maximum brake voltage of 36 V.
Q: What is the rated current of the DKC04.3-016-7-FW drive controller?
A: This drive controller is designed for a rated current of 16 A during operation.
Q: Which design version does the DKC04.3-016-7-FW model feature?
A: The DKC04.3-016-7-FW belongs to design version 3.
