DKR 3.1-W200N-BE37-00 Bosch Rexroth Indramat
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MPN: R911263477
The Bosch Rexroth Indramat DKR 3.1-W200N-BE37-00 is part of the DKR Drive Controllers series and features a SERCOS command interface and IP20 protection category. This model supports a continuous drive current of 92 Amps at 4 kHz and has a peak drive current of 141 Amps along with a rigid DC bus. It operates with a control voltage of 230 V AC and a cooling method using a built-in blower.
Internal Product Review
The DKR 3.1-W200N-BE37-00 from Bosch Rexroth Indramat is an advanced drive controller featuring a SERCOS interface and digital servo and resolver feedback for precise motion control. High continuous drive current of 92 A and a peak current of 141 A support demanding industrial tasks. The integrated air cooling and IP20 protection make this unit reliable for continuous operation in challenging environments.
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Product Description:
The DKR 3.1-W200N-BE37-00 is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. Installed between a plant’s three-phase AC supply and a servo or spindle motor, it converts fixed-frequency input power into regulated output that follows velocity or torque commands from the motion control system. Its power electronics and real-time monitoring support closed-loop motor regulation in automated machining centers, transfer lines, and gantry axes. The controller can regulate motor torque and speed while exchanging operating data with a higher-level control system.
The controller communicates through a SERCOS interface and belongs to the Digital Intelligent AC Drive Controller product group. During continuous operation at a 4 kHz switching rate, it delivers 92 A, while transient demand can rise to 141 A without saturating the output stage. The 200 current class in the type code indicates a power section intended for heavy industrial loads. Its maximum output frequency is 800 Hz, which supports the operation of high-speed motors. The control electronics use 230 V AC with a tolerance of ±10% and consume 200 VA of auxiliary power. A built-in blower forces air through the heat sink to remove heat from the power stage. The controller does not include a brake chopper, so regenerated energy must be handled by external equipment. It supports digital servo feedback and resolver signals for motor position monitoring.
The enclosure provides IP20 protection and must be installed inside a cabinet that prevents exposure to water and excessive contamination. Internal airflow removes 800 W of switching-loss heat, while total continuous heat dissipation can reach 1,200 W under full load. The controller can operate at ambient temperatures up to 55 °C with derating. Installation is permitted at elevations up to 1000 m without reducing the output. The controller is design version 1 and has function module version 00. It does not include a bleeder, and its rigid DC bus requires the connected system to provide an appropriate path for excess regenerative energy.
